THE AUSTRALIAN
ntomologist
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THE ENTOMOLOGICAL SOCIETY OF QUEENSLAND
Volume 32, Part 2, 29 June 2005%
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THE AUSTRALIAN ENTOMOLOGIST
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Queensland Museum (richard.bull @uqconnect.net)
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Queensland Museum
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Cover: The New Caledonian Aoupinia pseudohelea Matthews (Coleoptera:
Tenebrionidae) bears a striking resemblance to Australiafs pie-dish beetles of the
genus Helea. However it belongs to the unrelated Gondwanan tribe Adeliini. This
species is known only from the Aoupinie Special Fauna Reserve that straddles New
Caledoniais central mountain massiff between Poya and Ponerihouen. It is a erptic
species living within rainforest leaf litter. Illustration by Geoff Thompson.
Australian Entomologist, 2005, 32 (2): 49-54 49
NEW AUSTRALIAN BUTTERFLY RECORDS (LEPIDOPTERA)
FROM SAIBAI AND DAUAN ISLANDS, TORRES STRAIT,
QUEENSLAND
TREVOR A. LAMBKIN! and A. IAN KNIGHT?
‘Queensland Department of Primary Industries and Fisheries, 665 F airfield Road, Yeerongpilly,
Old 4105 (Email: Trevor.Lambkin@dpi.qld.gov.au)
?70 Exton Road, Exton, Tas 7303
Abstract
Four butterfly species new to Australia are recorded and illustrated from northern Torres Strait
islands: Graphium codrus medon (C. & R. Felder) and Cyrestis achates nedymnus C. & R.
Felder from Dauan Island, Hypochrysops chrysargyrus Grose-Smith & Kirby from Saibai Island
and Arhopala philander gander Evans from both islands. The relationship between A. philander
C. & R. Felder and 4. madytus Fruhstorfer is discussed. Field observations on the four species
are provided and their distributions discussed.
Introduction
Saibai and Dauan Islands lie in the northern sector of Torres Strait,
Queensland, close to the southern coastline of Papua New Guinea. Saibai is a
relatively large, flat, muddy island covered mostly with mangroves and
halophytic plant species, while Dauan, in contrast, is volcanic in origin with a
large summit covered in boulders and extensive monsoonal vine thickets.
They were considered to be remote up until the early 1980s, after which an
airstrip was constructed on Saibai and ferry travel to Dauan was possible.
Because of this remoteness, there were almost no records of butterflies from
these two islands prior to the early 1990s. Moreover, no collection records
appeared in the literature prior to Braby (2000), who provided a species list
for these islands and nearby Boigu Island. Since the 1980s, a significant
contribution to the knowledge of the butterfly fauna of Saibai and Dauan Is
has been made by a number of collectors (S.S. Brown, S.J. Johnson, A.I.
Knight, T.A. Lambkin, C.E. Meyer, P.S. Valentine and R.P. Weir). As a
result, six butterfly species new to Australia have been discovered on these
islands. Cephrenes moseleyi (Butler) was recorded from Saibai and Dauan by
Lambkin and Knight (2004) and Hypolycaena litoralis Lambkin, Meyer,
Brown & Weir was recently described from these islands (Lambkin et al.
2005). In this paper we document and illustrate four more species new to
Australia, provide comments and field observations for each and discuss their
identification and distribution.
Abbreviations of specimen depositories are: ANIC - Australian National
Insect Collection, Canberra; CEMC - C.E. Meyer collection, Canberra; SSBC
- S.S. Brown collection, Bowral; TLIKC - joint collection of T.A. Lambkin
and A.I. Knight, Brisbane; UQIC - University of Queensland Insect
Collection, Brisbane. Abbreviations of collectors are: AIK - A.I. Knight;
CEM - C.E. Meyer; EC - E. Cameron; EJLH - E.J.L. Hallstrom; RPW - R.P.
Weir; SSB - S.S. Brown; TAL - T.A: Lambkin; WWB - W.W. Brandt.
50 Australian Entomologist, 2005, 32 (2)
Graphium codrus medon (C. & R. Felder) (PAPILIONIDAE)
(Fig. 1)
Material examined. QUEENSLAND: 1 0’, Dauan Island, Torres Strait, 17.11.2004,
TAL (TLIKC).
Comments. Graphium codrus (Cramer) is widely distributed from Malaysia
through to the Solomon Islands, including Papua New Guinea (Parsons
1998). Its large size and prominent blunt tails make it one of the most
distinctive members of the genus found in the region. C.E. Meyer (pers.
comm.) first sighted a specimen on Dauan in April 2002. In February 2004,
three more were observed on Dauan, one of which was collected. This
specimen (Fig. 1) is referable to G. c. medon, as illustrated by Parsons (1998)
and D’Abrera (1978), which occurs principally on mainland New Guinea
(Parsons 1998). The specimens observed in 2004 were all feeding at
Melaleuca blossom, while the one seen in 2002 flew over mangroves,
pausing briefly at a flowering vine suspended from the top of a tree on the
landward side of mangroves (C.E. Meyer pers. comm.). Typically, as in other
members of the genus, the specimens observed flew rapidly and when at
blossom fluttered nervously, alighting only briefly on each flower.
Parsons (1998) listed Hernandia species (Hernandiaceae) as larval host
plants, with H. nymphaeifolia (C.Presl) Kubitzki noted as the strand host on
Kiriwina Island in Papua New Guinea. A review of the distribution of H.
nymphaeifolia (= H. peltata Meisn.) in northern Australia (Cribb and Cribb
1985, Hyland et al. 2003, A. Pollock and B.M. Waterhouse pers. comms),
indicates that it is a rarely observed species occurring only to an elevation of
a few metres above sea level (Hyland ef al. 2003). To date, in Torres Strait H.
nymphaeifolia has been observed only on Darnley Island (B.M. Waterhouse
pers. comm., Hyland ef a/. 2003), with records also from the southeast coast
of Papua New Guinea (A. Pollock pers. comm.). Considering the overall
distribution of H. nymphaeifolia in this region, it is possible that it occurs as a
strand species on Dauan and might be the host of G. codrus there.
Cyrestis achates nedymnus C. & R. Felder (NYMPHALIDAE)
(Figs 3-4)
Material examined. QUEENSLAND: 1 Oo’, 1 ?, Dauan Island, Torres Strait, 18.1.2004,
AIK (TLIKC).
Comments. Cyrestis achates Butler occurs from Waigeo and Aru in eastern
Indonesia to Papua New Guinea, including its outlying islands (Parsons
1998). In January 2004, two specimens referable to C. a. nedymnus were
collected on Dauan, a male as it imbibed mineralized water from damp sand
at a watercourse and a female from a flowering shrub. Both flew briskly with
a gliding motion before settling with their wings outspread, behaviour typical
of all Papua New Guinea species of Cyrestis Boisduval (Parsons 1998).
Australian Entomologist, 2005, 32 (2) 51
Figs 1-8. Butterflies from northern Torres Strait islands. All figures: upperside left,
underside right; Figs 3-4 to scale, Figs 5-8 to scale. (1) Graphium codrus medon male,
Dauan, 17.11.2004, TAL [forewing length 49 mm]; (2) Hypochrysops chrysargyrus
female, Saibai, 11.11.2004, AIK [20 mm]; (3-4) Cyrestis achates nedymnus: (3) male,
Dauan, 18.1.2004, AIK [26 mm], (4) female, Dauan, 18.i1.2004, AIK [28 mm]; (5-6)
Arhopala philander gander: (5) male, Saibai, 8.v.2000, AIK [23 mm], (6) female,
Saibai, 8.v.2000, AIK [21 mm]; (7-8) Arhopala madytus: (7) male, Dauan, 5.v.2000,
AIK [26 mm], (8) female, Dauan, 3.iv.2001, AIK [24 mm].
52 Australian Entomologist, 2005, 32 (2)
Parsons (1998) listed Trophis (= Malaisia) scandens (Lour.) Hook. & Arn.
(Moraceae) as the host plant in Papua New Guinea. 7. scandens is a
scrambling or climbing shrub (Chew 1989) that typically grows in rainforest,
including beach and monsoon forest (Hyland et al. 2003). Currently in Torres
Strait, T. scandens is only recorded from the eastern islands of Murray (A.
Pollock and B.M. Waterhouse pers. comms) and Darnley (Hyland et al.
2003). In Australia and Papua New Guinea, 7. scandens is also the recorded
host of Euploea tulliolus (Fabricius) (Nymphalidae) (Parsons 1998, Braby
2000), whose known distribution in Torres Strait is primarily confined to the
eastern islands (Murray, Darnley, Campbell and Dalrymple), the two eastern
central islands (Sue and Yam), Thursday Island in the south and Dauan Island
in the north (pers. obs., De Baar 1988). All of these islands have stands of
beach or monsoon forest and, considering that many of them have not been
surveyed thoroughly for butterflies, especially during December and January
(Lambkin and Knight 1990) when C. achates might predominately fly, it is
possible that C. achates might also occur elsewhere in Torres Strait.
Arhopala philander gander Evans (LY CAENIDAE)
(Figs 5-6)
Material examined. QUEENSLAND: 1 ©’, Saibai Island, 18.vii.1975, EC (UQIC);
1 g, 1 9, same data except 29.11.1996 (©, genitalia vial) or 22.11.1994 (?), TAL
(TLIKC: both illustrated by Braby 2000); 23 0707, 30 99, same data except 18.iv.2000
(©), 20.iv.2000 (F), 21.iv.2000 (9), 22.iv.2000 (2 0707), 29.iv.2000 (2 99), 1.v.2000
(£), 8.v.2000 (9 O07, 2 99), 3.iv.2001 (?), 5.iv.2001 (2 oO", 2 99), 7.iv.2001 (9),
3.v.2001 (3 O70", 3 99), 4.v.2001 (2 99), 5.v.2001 (4 0", 4 99), 7.v.2001 (1 0%, 8 99),
18.v.2001 (1 ©, 1 9), 22.v.2001 (1 ?), AIK (TLIKC); 1 0%, 1 ?, same data except
20.iv.-13.v.2000, AIK (CEMC); 4 d'0, 3 °°, same data except 19-20.iv.2001 (1 9),
CEM & SSB, bred larva-emerged 20.v.2001 (1 9), CEM, 25-26.iv.2002 (1 07, 1 ?),
CEM, SSB & RPW, 3-4.v.2002 (3 0’0"), CEM, SSB & RPW (CEMC); 1 0%, 2 99,
same data except 20.iv.-13.v.2000, AIK (SSBC); 3 oo, 1 9, same data except
20.iv.2001 (1 0”), SSB & CEM, 3.v.2002 (2 o’0", 1 2), SSB, CEM, & RPW (SSBC);
1 oO’, 2 99, Dauan Island, 1.iv.2001 (1 ©, 1 ?), 4.iv.2001 (1 9), AIK (TLIKC); 1 0%, 4
99, same data except 13-18.iv.2001 (1 0%, 3 99), CEM & SSB, 26.iv.-2.v.2002 (1 9),
CEM, SSB & RPW (CEMC); 3 d'O, 2 ?9, same data except 13-18.iv.2001, SSB &
CEM (SSBC). PAPUA NEW GUINEA: 3 g'o, 1 9, Kiunga, Fly River, 2.vii-
31.x.1957, WWB (©, genitalia vial); 1 0’, Amazon Bay Area, Deria, 700 ft,
11.xii.1962-9.1.1963, WWB; 1 ?, Maprik (Sepik District), 600 ft, 1950, WWB and
EJLH (ANIC).
Comments. A male specimen (in UQIC) of an Arhopala Boisduval species,
new to Australia, was collected on Saibai in July 1975 by E. Cameron (G.B.
Monteith pers. comm.). Its specific identity at that time was unknown and
D.L. Hancock (G.B. Monteith pers. comm.) tentatively placed it within the
‘centaurus’ species group of Evans (1957). Braby (2000) documented and
illustrated a second male and a female from Saibai collected in the 1990s and
referred to them as ‘Arhopala sp. Saibai.’ Braby (2000) noted that these
specimens resembled A. philander C. & R. Felder but, because of their worn
Australian Entomologist, 2005, 32 (2) 53
condition, they could not be positively identified. Since then, more specimens
have been collected from Saibai and Dauan and comparisons between their
external facies and genitalia and those of A. philander from the Western
Province of Papua New Guinea (in ANIC), plus genitalia illustrations in
Parsons (1998), have confirmed that the species is A. philander.
Evans (1957) divided Arhopala (as Narathura Moore) into 12 species
groups. Parsons (1998) agreed with Evans’ division but suggested that only
eight of these groups occurred in Papua New Guinea. Evans (1957) and
Parsons (1998) placed A. philander in the ‘centaurus’ group, distinguished by
having an unbroken underside forewing discal (postmedian) band (or only
slightly dislocated at vein R4), with the upper part directed to the dorsum
(costa) and a long hindwing tail, ciliate on its dorsal side. Within this group
in northern Torres Strait, A. philander appears closest in external facies to A.
madytus Fruhstorfer (Figs 7-8), with which it occurs. Both species have a
uniform purple sheen on the underside, which is particularly noticeable on
fresh specimens. A. philander is generally smaller than A. madytus. On the
underside of the wings, the pattern of A. philander is less distinct, the
postmedian bands are narrower and the underside ground colour is darker
brown than in A. madytus. On the upperside, both sexes of A. philander have
a more purple hue than in 4. madytus, while females of A. philander have
less extensive areas of purple-blue than A. madytus females.
Arhopala philander occurs widely from Batjan and Halmahera in eastern
Indonesia to Papua New Guinea, including some outlying islands. Torres
Strait specimens appear indistinguishable from those from nearby Papua New
Guinea and are referable to A. p. gander. In Torres Strait almost all
specimens have been collected in or near mangroves although, in 2001, one
of us (AIK) collected adults off foliage of Terminalia catappa L.
(Combretaceae) behind the beach on Dauan.
Hypochrysops chrysargyrus Grose-Smith & Kirby (LYCAENIDAE)
(Fig. 2)
Material examined. QUEENSLAND: 1 9, Saibai Island, Torres Strait, 11.11.2004, AIK
(TLIKC).
Comments. Hypochrysops chrysargyrus is a distinctive rainforest species
(Sands 1986) that occurs sporadically across New Guinea, where it is
endemic (Parsons 1998). In general, the species is considered rare (Parsons
1998), but males are known to frequently congregate on moist sand (Sands
1986). In February 2004, a female was collected on Saibai not far from the
island’s village. D.P.A. Sands (pers. comm.) and T.L. Fenner (in Parsons
1998) have observed the life history of this species in Papua New Guinea and
report that the larvae feed on the fresh foliage of Pommetia (= Pometia)
pinnata J.R. Forster & J.G. Forster (Sapindaceae) and are attended by ants.
This tree, locally known as ‘taun’ in Papua New Guinea (Parsons 1998) is
54 Australian Entomologist, 2005, 32 (2)
grown in village gardens and produces edible fruit that resemble lychees
(Litchi chinensis Sonn. Mill. [Sapindaceae]). Despite H. chrysargyrus being
restricted primarily to rainforest and secondary forest (Parsons 1998), D.P.A.
Sands (pers. comm.) considers it likely that P. pinnata might be grown in
village gardens on Saibai and thus H. chrysargyrus could be resident on the
island. Sands (1986) and Parsons (1998) reported that females are rarely
collected and the specimen from Saibai is the fourth female known.
Acknowledgements
We thank the local community councils of Saibai and Dauan for permitting entry onto
their islands and acknowledge the following for providing valuable personal
communications: G.B. Monteith (Queensland Museum), A. Pollock (Queensland
Herbarium), B.M. Waterhouse (Northern Australia Quarantine Strategy), C.E. Meyer
and D.P.A. Sands. Appreciation is given to S.S. Brown, C.E. Meyer, G. Daniels
(UQIC) and E.D. Edwards (ANIC) for access to specimens in their care. J.S. Bartlett
gave valuable support by formatting and preparing the colour plate.
References
BRABY, M.F. 2000. Butterflies of Australia: their identification, biology and distribution.
CSIRO Publishing, Collingwood; xx + 976 pp.
CHEW, W.L. 1989. Flora of Australia, Hamamelidales to Casuarinales (Moraceae) 3: 15-68.
Australian Government Publishing Service, Canberra; xvi + 219 pp.
CRIBB, A.B. and CRIBB, J.W. 1985. Plant life of the Great Barrier Reef and adjacent shores.
University of Queensland Press, St. Lucia; xviii + 294 pp.
D’ABRERA, B. 1978. Butterflies of the Australian Region. 2nd Edition. Lansdowne, Melbourne;
415 pp.
DE BAAR, M. 1988. Insects collected during a trip to Torres Strait 27 March to 10 April, 1987.
News Bulletin of the Entomological Society of Queensland 15: 107-117.
EVANS, W.H. 1957. A revision of the Arhopala group of Oriental Lycaenidae (Lepidoptera:
Rhopalocera). Bulletin of the British Museum of Natural History (Entomology) 5: 83-141.
HYLAND, B.P.M., WHIFFIN, T., CHRISTOPHEL, D.C., GRAY, B. and ELICK, R.W. 2003.
Australian tropical rain forest plants - trees, shrubs and vines. CD-Rom. CSIRO Publishing,
Collingwood.
LAMBKIN, T.A. and KNIGHT, A.I. 1990. Butterflies recorded from Murray Island, Torres
Strait, Queensland. Australian Entomological Magazine 17: 101-112.
LAMBKIN, T.A. and KNIGHT, A.I. 2004. The first Australian record of Cephrenes moseleyi
(Butler) (Lepidoptera: Hesperiidae) from Torres Strait, Queensland. Australian Entomologist
31(3): 107-109.
LAMBKIN, T.A., MEYER, C.E., BROWN, S.S., WEIR, R.P., DONALDSON, J.F. and
KNIGHT, A.I. 2005. A new species of Hypolycaena C. & R. Felder (Lepidoptera: Lycaenidae)
from Australia and its relationship with H. phorbas (Fabricius). Australian Entomologist 32(1):
17-35.
PARSONS, M.J. [1998]. The butterflies of Papua New Guinea: their systematics and biology.
Academic Press, London; xvi + 736 pp.
SANDS, D.P.A. 1986. A revision of the genus Hypochrysops C. & R. Felder (Lepidoptera:
Lycaenidae). Entomonograph 7: 1-116.
Australian Entomologist, 2005, 32 (2): 55-64 55
THE STATUS OF OPODIPHTHERA CARNEA (SONTHONNAX) AND
OPODIPHTHERA LORANTHI (LUCAS) (LEPIDOPTERA:
SATURNIIDAE) IN NORTHERN AND EASTERN AUSTRALIA
D.A. LANE! and E.D. EDWARDS?
13 Janda Street, Atherton, Old 4883
?Division of Entomology, CSIRO, GPO Box 1700, Canberra, ACT 2601
Abstract
Opodiphthera carnea (Sonthonnax) and O. loranthi (Lucas) are confirmed as separate species,
occurring in northern and eastern Australia respectively. Notes are presented on diagnostic
characters, aspects of their biology and life histories.
Introduction
The name Antheraea carnea Sonthonnax, 1899 has not been widely used in
the Australian literature and the identity of the species has been in some
doubt. When Turner (1922) revised the Australian Saturniidae he did not
include the name and may have been unaware of it. Seitz (1928) used the
name and illustrated a specimen (his Fig. 52c) but considered it a form of
Caligula helena (White). Schiissler (1933) listed the name and followed Seitz
in treating it as a form of Austrocaligula helena. Bouvier and Riel (1931) and
Bouvier (1936) both listed it in the genus Opodiphthera Wallengren as a
valid species. Edwards (1996), recognizing Seitz’s (1928) figure and
checking the original description, placed it as a synonym of Opodiphthera
loranthi (Lucas, 1891), a species well known to Australian lepidopterists.
Lane et al. (1997) recognized differences between the northern and southern
populations of what was then known as O. loranthi. D’ Abrera (1998) treated
O. carnea and O. loranthi as separate species and illustrated both, although
he misidentified two of the three specimens illustrated. The treatment by
D’Abrera (1998) led us to re-examine the identity of O. carnea and we now
consider that O. carnea and O. loranthi are separate species, which differ in
their appearance, morphology, distribution and biology.
Sonthonnax (1899) described O. carnea, in a Report of the Commission of
the Laboratoire D’Etudes de la Soie (Laboratory for Studies of Silk), from an
unspecified number of specimens of both sexes. He gave the locality as ‘Nord
de |’Australie’ (northern Australia) and referred to a ‘type’, which we
interpret as a holotype, together with specimens in the Rothschild Collection.
We have accepted the implication that the holotype was in the collection of
the Laboratoire. Bouvier and Riel (1931) listed a single male in the collection
of the Laboratoire from Georgetown, Queensland plus five other specimens,
including a female labelled ‘Australie’ and four specimens collected after the
original description was published. Bouvier (1936) appended ‘(Mus. Paris)’
to his listing of O. carnea and we interpret this to mean that the holotype was
then in the Museum National d’Histoire Naturelle, Paris. An enquiry was
made on our behalf by the late Dr Ebbe Nielsen to Dr Joel Minet but the type
could not be found. Drs Minet, P. Viette and P-C. Rougeot concurred that the
56 Australian Entomologist, 2005, 32 (2)
type should be in the museum collection but as it could not be found it should
be regarded as lost. Nevertheless, there seems to be some possibility of the
holotype being found and we have refrained from describing a neotype.
The original description of O. carnea was reasonably detailed and
Sonthonnax (1899) mentioned ‘two forms’ and also ‘intermediates’. The
mention of two forms suggests that Sonthonnax described both species
originally but we do not know what he meant by ‘intermediates’. In the
absence of the holotype of O. carnea we interpret this species on the basis of
its distribution, representing the northern species, found in northern
Queensland and the Northern Territory. O. /oranthi is the more southern
species, found in central and southern Queensland, New South Wales and the
Australian Capital Territory. However, it should be noted that the rather
crude illustration provided by Sonthonnax (1899) is a better representation of
O. loranthi than of O. carnea. Should the holotype of O. carnea be found in
the future then the question of its identity may need to be revisited.
Lucas (1891) described Antheraea loranthi from an unspecified number of
specimens (there were many) from ‘Brisbane to Duaringa, Qld’. A specimen
in the Lucas collection in the South Australian Museum, labelled ‘Brisbane
Lucas coll.’ and ‘Antheraea loranthi Lucas TYPE I 14346 Id by N. Tindale
probably type’, is certainly one of the syntypes and is here designated as
Lectotype in order to stabilize the name for future studies. A photograph of
this specimen has been examined and it is the species we here call O.
loranthi, which was first placed in Opodiphthera by Bouvier (1936). Lucas
(1891) gave some information about its biology and more details were given
by Common (1990), who also illustrated the larva in colour.
Opodiphthera carnea (Sonthonnax, 1899)
(Figs 1-2, 5-6, 14-16)
Material examined. NORTHERN TERRITORY: 1 0%, 12.52S 132.50E, Koongarra,
10.ii1.1974, M.S. Upton; 1 0%, same data but 20.ii.1974, J.L. Curtis; 4 oo", 1 9,
12.19S 133.19E, Nabarlek, Melanie Webb, with dates 19.iii.1983, 6.iv.1983, 11.xi.
1983, 16.xi.1983, no date; 1 0, 15.07S 131.42E, 98 km SW of Katherine, 1.iv.1995,
E.D. Edwards & M. Matthews (all in Australian National Insect Collection (ANIC),
Canberra); 1 0’, Mahaffey Rd, Howard Springs, 5.iv.1993, D.N. Wilson (in D.A. Lane
coll.); 1 o, Howard Springs, 25.iv.1995, C.E. Meyer, D.A. Lane & D.N. Wilson (in
C.E. Meyer coll., Canberra). QUEENSLAND: 1 0’, 15.11S 144.25E, 7 km ESE New
Laura, Lakefield Nat. Pk, 27.vii.1998, E.D. Edwards; 1 0’, 15.138 143.55E, 5 km SE
Hann River, 15.i.1994, E.D. Edwards & P. Zborowski; 2 00’, 15.16S 144.49E, 14 km
WbyN Hope Vale Mission, 9.x.1980, E.D. Edwards; 1 0’, 15.18S 145.01E, 31 km
NWbyN Cooktown, 20.v.1977, I.F.B. Common & E.D. Edwards; 1 0%, 15.30S
145.16E, 5 km SEbyS Cooktown, 19.v.1977, I.F.B. Common & E.D. Edwards, ANIC
genitalia slides 13106, 13107; 2 o'o, 15.45S 144.15E, 2 km NNW Jowalbinna,
17.1.1994, E.D. Edwards & P. Zborowski; 1 0%, 17.018 145.35E, Davies Creek Nat.
Pk, 22.11.1998, E.D. Edwards & H. Sutrisno; 1 0’, 18.07S 144.49E, Forty Mile Scrub,
1.xii.1970, R. Hardie; 2 00", same data except date 17.ii.1998 and collector R.
Australian Entomologist, 2005, 32 (2) 57
Oberprieler; 1 ?, Townsville, 5.xi.1900, F.P. Dodd; 1 9, same locality without further
data; 1 o, 20.30S 144.50E, 5 km S Warang Camp, White Mts, 6.iv.2000, E.D.
Edwards (all in ANIC); 8 Oo’, 4 99, 12 km N Atherton, bred/pupa, 22.x.1999,
12,19,21,24.xi.1999, 18,20.xii.1999 & 3,5,15,18.i1.2000, D.A. Lane; 8 00%, 3 99, 10
km N Atherton, bred/pupa, 22.xii.1993, 26,28.x.2003, 8,20,22,25.xi.2003 &
4,8,9,10.xii.2003, D.A. Lane; 14 d'o, 8 9°, 30 km NW Atherton, bred/pupa,
1,2,4,5,7.x.2000, 22,23,25.xi.2000, 2,4,6.xii.2000, 16.11.2001, 19.iii.2001, 29.x.2003
& 2,6,8,12,13,26.xi.2003, D.A. Lane; 1 0’, 4 99, 20 km W Mt. Surprise, 18.21S,
144.15E, bred/pupa, 28.x.2003, 9,11.xi.2003 & 8,10.xii.2003, D.A. Lane; 1 ©,
Townsville, bred/pupa, 27.vii.2001, S.J. Johnson; 2 00’, Bogie R., 96 km W Bowen,
29.xi.1970, D.A. Lane (all in D.A. Lane coll.); 1 0’, Cooktown, ii.1991, Bernard
Turlin, genitalia slide SNB 925/03 (in S. Naumann coll., Berlin).
Male genitalia (Figs 5-6). Uncus fairly narrow, angled downwards, tip
bifurcate with two down-pointed teeth; tegumen broad, arched; vinculum
broad; saccus broad, curved anteriorly; valva short, very broadly triangular,
with a bluntly pointed tip, a large subspherical projection from near the base
of the costa, with one long pointed projection and several rounded
protrusions; aedeagus short, broad, tip slightly notched.
Distribution. O. carnea is known from the Northern Territory at about 100
km SW of Katherine, from the Darwin area, Kakadu National Park and
western Arnhem Land. In Queensland it is known from Lakefield National
Park, from Cooktown, then south through the western Atherton Tableland to
Townsville and inland to Forty Mile Scrub, from near Georgetown and Mt.
Surprise, the White Mountains and from an area 96 km west of Bowen.
Life history and biology. The foodplants are pendulous mistletoes belonging
to the genus Amyema (Loranthaceae), often A. miquelii, growing high on
eucalypt trees. The egg is of the flat type, ovoid in shape, 2 mm x 1.5 mm x 1
mm high, creamy white, laid in batches of 3-20 on stems or (less frequently)
leaves of the foodplant. First instar larva 4 mm long when first hatched; head
and legs black, body mostly black with light tan markings; covered in fine
black setae mostly arranged on scoli. Second instar larva 10-25 mm long;
head and legs black; body light brown, with darker brown markings and
black setae. Third instar larva (Fig. 14) 25-40 mm long; head black, ocelli
dark brown; prothoracic plate very dark brown, almost black, with rows of
white setae extending forward, looking superficially like human eyelashes;
legs and prolegs dark brown, also adorned with white setae; spiracles
distinctly white, surrounded by dark brown rings; body light creamy-brown,
adorned with raised scoli which are basally dark brown becoming rose pink
distally and adorned with a whirl of white setae at the top; the scoli on each
segment are joined by a dark brown band, giving a banded appearance.
Fourth instar larva 40-70 mm long; similar to fifth instar, but body is light
brown in ground colour. Fifth instar larva (Figs 15-16) 70-120 mm long; head
and ocelli black, with fine white setae; legs black, covered in fine white setae;
upper part of legs adorned with white spatula-like setae; body bright green,
58 Australian Entomologist, 2005, 32 (2)
Figs 1-4. Opodiphthera spp., uppersides. (1-2) O. carnea: (1) female; (2) male. (3-4)
O. loranthi: (3) female; (4) male.
same colour as mistletoe leaves, providing remarkably good camouflage for
such a large larva; each thoracic and abdominal segment ringed by a black
band that straddles spiracles, extending up from the legs; each black band
contains raised scoli coloured rose pink; tips of scoli bear a white, spoon or
spatula shaped seta; white setae also straddle the body on each side of the
Australian Entomologist, 2005, 32 (2) 59
black bands; spiracles distinctly white; a lateral row of scoli occurs below
spiracles; abdominal segments 1-6 carry four scoli above spiracles; anal
segment also carries four scoli; anal segment and prolegs black, covered in
white setae; anal plate dark brown, with fine white setae.
Figs 5-8. Opodiphthera spp., male genitalia. (5-6) O. carnea: (5) lateral view with left
valva removed, genitalia slide ANIC 13106; (6) lateral view left valva, genitalia slide
ANIC 13106. (7-8) O. loranthi: (7) lateral view with left valva removed, genitalia
slide ANIC 13108; (8) lateral view left valva, genitalia slide ANIC 13108.
Larvae spin their cocoons gregariously in a clump on the mistletoe butt, with
individual clumps of 3-40 cocoons being found. Individual cocoons are quite
tough and rigid. The cocoon clump, however, usually has an outer layer of
silk, slightly detached from but attached to the cocoons, slightly loose and
covering the cocoon clump like an outer wall. This outer silk layer is often
60 Australian Entomologist, 2005, 32 (2)
similarly coloured to the mistletoe branches, providing remarkably good
camouflage. Adults usually emerge from their cocoons after 2200 h and may
not fly until 2300 h or later. The habitat in which this species occurs is the
drier open eucalypt woodland of the northern savannah country, where good
quantities of Amyema mistletoes occur.
Opodiphthera loranthi (Lucas, 1891)
(Figs 3-4, 7-13)
Material examined. QUEENSLAND: 1 ?, 21.02S 149.10E, Bucasia, 17.ix.1995, K.J.
Sandery; 1 ?, Marmor to Bajool, Bruce Highway, 16.iii.1995, G. Clarke; 1 ©’,
Duaringa, 17.x.1919, 1 9, same locality, 22.x.1919; 1 0’, Gayndah; 2 99, Noosa,
16.11.1967, V.J. Robinson; 1 0’, Toowoomba, 30.xii.1927, W.B. Barnard, 2 9°, same
data except dates 25.xii.1927, 30.xii.1927; 1 0’, Toowoomba, 1.ii.1963, J. Macqueen;
1 0, 27.338 151.59E, Prince Henry Heights, Toowoomba, 15.i.1983, I.F.B. Common,
1 g, same data except 16.11.1993; 1 o, Brisbane, [A.J. Turner]; 1 9, Brisbane,
12.11.1928, A.N. Burns; 4 d'O, 3 99, Brisbane, 9.i.1955, 10.i.1955, 12.1.1955,
15.i.1955, C. Franzen; 3 oo’, 1 ?, Millmerran, 15.i.1956, 1.ii.1956, 3.ii.1956,
4.i1.1956, J. Macqueen; 1 ?, Glen Aplin, 10.xii.1948, Jean Gemmell; 2 00’, 3 99,
Stanthorpe, 23.xi.1927, 24.xi.1927, 25.xi.1927, 29.xii.1927, 4.ii.1928, W.B. Barnard;
2 OO, Killarney, 9.ii.1928, 12.11.1947, W.B. Barnard; 6 00", 5 99, Killarney, no date,
5.xi1.1933, 7.xii.1933, 12.11.1944, 5.xi.1944, 26.xi.1944, 8.xii.1944, E.J. Dumigan (all
in ANIC); 1 9, Dawson River; 1 0’, Chambers Flat, 6.xii.1992, R. McDonald; 1 ©’,
Toowoomba, 1.1.1928, W.B. Barnard; 1 9, Brisbane, xi.1927, H. Hacker; 1 ©,
Tamborine Mt, 1.1956, G. King; 4 o’o’, 2 99, Killarney, 29.xii.1927, 11.i.1928,
13.1.1928, W.B. Barnard (all in Queensland Museum, Brisbane); 4 00%, 4 99,
Toowoomba, bred/pupa, 20,21.xii.1974, D.A. Lane; 2 0'0", 2 99, Leyburn, bred/pupa,
2.iii.1977, 2,25.xi.1977, 26.xii.1977, D.A. Lane; I 0’, Ravensbourne, 23.xii.1979,
D.A. Lane (in D.A. Lane coll.). NEW SOUTH WALES: 2 00’, Sheep Stn Ck, Border
Ranges Nat. Pk, 5.ii.1999, E.D. Edwards; 1 0, 7 mls W Rosebank, 8.xi.1961, I.F.B.
Common & M.S. Upton; 2 00", Dorrigo Nat. Pk, 17.xi.1976, I.F.B. Common & M.S.
Upton; 1 ©, 1 9, Entrance, New England Nat. Pk, 26.xii.1960, 5.ii.1962, C.W.
Frazier, male with ANIC genitalia slides 13108, 13109; 1 ©, O’Sullivans Gap,
15.xi.1976, I.F.B. Common & E.D. Edwards; 1 0”, Caparra, 2.1.1992, J. Stockard; 1 9,
Narara, 3.x.1949, L.H. Mosse-Robinson; 1 0%, Gosford, 20.iii.1952, L.H. Mosse-
Robinson; 1 ©, Otford, 17.xii.1962, V.J. Robinson; 2 oo’, Mt Keira, 29.xi.1977,
1.xii.1979, V.J. Robinson; 1 0’, Wirrimbirra Picton, 30.xi.1967, V.J. Robinson; 1 0,
Minnamurra Falls, 18.i.1969, V.J. Robinson; 1 ©, 1 9, Bawley Point, 3.x.1997,
3.xii.1997, D.C.F. Rentz; 1 9, Cochranes Flat, 9 km SW Eden, xii.1999, L. Simpson
(all in ANIC); 1 9, Inverell, xii.1977, J.I. Giddings (in D.A. Lane coll.).
AUSTRALIAN CAPITAL TERRITORY: 1 g, Canberra env., Gympie St lantern,
8.xi.1983, Dirk Casteleyn, genitalia slide SNB 926/03 (in S. Naumann coll., Berlin).
Male genitalia (Figs 7-8). Uncus fairly narrow, angled downwards, tip
bifurcate with two down-pointed teeth; tegumen broad, arched; vinculum
broad; saccus broad, curved anteriorly; valva short, very broadly triangular,
with a bluntly pointed tip, a large subspherical projection from near the base
of the costa, with four short blunt projections of about equal size; aedeagus
short, broad, tip slightly truncate.
Australian Entomologist, 2005, 32 (2) 61
16
Figs 9-16. Opodiphthera spp., larvae. (9-13) O. loranthi: (9) first instar; (10) second
instar; (11) fourth instar; (12-13) final instar. (14-16) O. carnea: (14) third instar; (15-
16) final instar.
62 Australian Entomologist, 2005, 32 (2)
Distribution. O. loranthi is known from Bucasia in northern central
Queensland south along the coast and tablelands to Cochranes Flat south of
Eden, NSW (where it has recently been reared by Mr Lewis Simpson) and
from Canberra, ACT.
Life history and biology. At Toowoomba and Leyburn larvae of O. loranthi
utilize Amyema miquelii (pers. obs. DAL). Recorded fooplants are A. miquelii
(Hagan 1983), A. pendula (V.J. Robinson and L. Simpson, pers. comms) and
A. quandang (J. Macqueen, label data). First instar larva (Fig. 9) with head
and legs shiny black; body light brown; abdominal segments 1, 6, 7 and anal
segment black; each segment carries raised light brown scoli - those on
abdominal segments 1, 6, 7 and anal segment are black in colour; each scolus
carries an upper whorl of brown setae. Second instar larva (Fig. 10) similar to
first instar but body entirely light brown; scoli brown with black upper tips.
Fourth instar larva (Fig. 11) with head, legs and anal segment black; head and
prothoracic plate with white setae; body light brown; each segment is ringed
by a narrow black band that extends up from legs; anal prolegs adorned with
scattered white setae; scoli black, adorned with irregularly scattered white
setae. Fifth instar larva (Figs 12-13) with head, prothoracic plate and legs
black, carrying scattered white setae; body olive green; each thoracic and
abdominal segment ringed by a broad central black band that extends up from
legs; each black band contains raised scoli, black in colour, which are
adomed with scattered white setae on tips; spiracles white.
Larvae pupate in a cluster of cocoons on the mistletoe butt, with aggregations
of pupae ranging from three to forty having been found. Individual cocoons
are quite tough and rigid and, like O. carnea, are also enclosed in a slightly
detached silk layer, also coloured like the mistletoe branches and giving
excellent camouflage. The habitat of O. Joranthi is the open eucalypt
woodland of central Queensland and New South Wales.
Discussion and comparison
Larvae of both species are fairly similar, although noticeable differences in
the various larval instars, particularly the final, are evident. The final instar
larva of O. loranthi (Figs 12-13, locality Toowoomba, Qld) shows distinctive
differences from the final instar larva of O. carnea (Figs 15-16, locality 30
km NW Atherton, Qld). In O. Joranthi the base colour is a much darker
green, almost greyish. The raised scoli stems are black in colour, matching
the black body bands, as opposed to the rose-pink scoli stems of O. carnea.
The black segmental bands of O. /oranthi are wider than those of O. carnea
and also do not have the white adjacent setae present in O. carnea. The anal
plate of O. loranthi is also a much lighter brown colour than in O. carnea.
We have not seen specimens from the area west of Bowen in the north to
Bucasia (north of Mackay) in the south. It is not known if this area represents
a gap in distribution between the two species, whether they overlap in this
area, or if they are allopatric.
Australian Entomologist, 2005, 32 (2) 63
Sonthonnax (1899) gave a reasonable description of O. carnea but it lacked
the diagnostic features needed to distinguish it from: O. loranthi and the
illustration given was too crude to be reliable. O. carnea was illustrated in
colour by Seitz (1928) and was correctly identified but Seitz did not illustrate
O. loranthi. O. loranthi was correctly illustrated in black and white by
Common (1990, Fig. 40.8). The best coloured illustrations of adults available
are those of D’Abrera (1998) but two of these were misidentified: the male
figured opposite p. 22 is O. Joranthi and not O. carnea as stated; the female
opposite p. 22 is O. carnea and is correctly identified; the male figured
opposite p. 26 is O. carnea and not O. loranthi as stated.
On the forewings of both sexes the postmedian band is more heavily marked
in dark grey proximally in O. carnea and is a little more parallel to the
termen and closer to the termen when it reaches the dorsum in O. carnea than
in O. loranthi. If the inner margin of this postmedian band is well defined as
it curves near the costa, then it is smoothly rounded in O. carnea and slightly
waved in O. loranthi. It is more usually well defined in O. carnea. Also, on
the forewings of both sexes the subapical black spot is larger in O. carnea.
On both wings the eyespots are generally larger in O. carnea than in O.
loranthi and have darker red-brown centres. The black outer crescent of the
forewing eyespot is broader in O. carnea and is margined on the inner side by
a fine white line. This white line is absent in O. loranthi. The forewing
termen is less concave in O. carnea than in O. loranthi. The hindwing
postmedian band is usually more clearly defined in both sexes of O. carnea.
Males of O. carnea range from reddish orange to mustard yellow while males
of O. loranthi are almost always reddish orange and only very rarely mustard
yellow. Females of O. Joranthi are reddish orange while those of O. carnea
are consistently paler and more reddish yellow. On the underside of both
wings of O. carnea the postmedian line is a broad band of scattered black
scales, ill defined but well developed and reminiscent of the postmedian band
on the upperside of O. engaea Turner. On the underside of O. loranthi the
postmedian band is usually absent, sometimes very vaguely defined on the
forewing but in the hindwing is usually represented by a very vague area of
paler and pinker scales than the ground colour.
The white line on the inner margin of the outer black crescent of the forewing
eyespot in O. carnea is perhaps the easiest distinguishing character to use in
initially sorting specimens.
The male genitalia of the two species are similar but differ in the form of the
subspherical projection from near the base of the costa of the valva, which in
O. carnea is more squared and has one long projection and several short
rounded lumps, while in O. /oranthi it is more rounded and has four short
blunt projections. The tip of the aedeagus differs slightly, being notched in O.
carnea and truncate in O. loranthi.
64 Australian Entomologist, 2005, 32 (2)
Conclusion
Noticeable, consistent differences in adult wing pattern and shape, together
with differences in male genitalia and larval morphology, confirm the
separate status of these two species. With further collecting the distributions
will probably be found to be more extensive, particularly that of O. carnea
across northern Australia.
Acknowledgements
We thank Chris Burwell (Queensland Museum), Stefan Naumann (Berlin),
Dave Wilson, Cliff Meyer and Steve Johnson for the donation of, or access to
specimens in their care. Garry Sankowsky, Andreas Zwick and Steve Brown
offered much assistance with larval photographs. Vanna Rangsi (ANIC)
provided the genitalia images. We also thank the Queensland Parks and
Wildlife Service for scientific permits allowing research within National
Parks and State Forest areas under their jurisdiction.
References
BOUVIER, E.L. 1936. Etude des saturnioides normaux. Famille des saturniidés. Mémoires du
Muséum National d'histoire Naturelle 3: 1-354, pls 1-7.
BOUVIER, E.L. and RIEL, PH. 1931. Essai de classification des Lépidoptéres producteurs de
soie. 9e Fascicule. Facsimile 1977. Editions Sciences Nat, Paris; 141 pp.
COMMON, I.F.B. 1990. Moths of Australia. Melbourne University Press, Carlton; xxxii + 535
pp.
D’ABRERA, B. 1998. Saturniidae Mundi. Saturniid moths of the world. Part III. Goecke &
Evers, Keltern, Germany; x + 171 pp.
EDWARDS, E.D. 1996. Saturniidae. Pp 264-265, 364-365, in: Nielsen, E.S., Edwards, E.D. and
Rangsi, T.V. (eds), Checklist of the Lepidoptera of Australia. Monographs on Australian
Lepidoptera, Vol. 4. CSIRO Publishing, Collingwood; xiv + 529 pp.
HAGAN, C.E. 1983. The occurrence of Ogyris (Lepidoptera: Lycaenidae) in empty saturniid
cocoons. Australian Entomological Magazine 9(6): 95-96.
LANE, D.A., WILSON, D.N. and MEYER, C.E. 1997. New distribution records and notes for
Opodiphthera loranthi (Luc.) Lepidoptera: Saturniidae. Victorian Entomologist 27: 27.
LUCAS, T.P. 1891. On Queensland and other Australian Lepidoptera, with descriptions of new
species. Proceedings of the Linnean Society of New South Wales 6: 277-306,
SCHUSSLER, H. 1933. Saturnioidea: Saturniidae: 2. subfamily Saturniinae. Lepidopterorum
Catalogus 10(Pars 56): 1-324.
SEITZ, A. 1928. Saturniidae, Emperor-Moths. Pp 505-520, pls 53-56, in: Seitz, A. (ed.), The
Macrolepidoptera of the World. 10. Bombyces and Sphinges of the Indo-Australian Region. 2
vols. Alfred Kernen Verlag, Stuttgart; 909 pp, 100 pls.
SONTHONNAX, M.L. 1899. Essai de classification des Lépidopteres producteurs de soie.
Deuxième Fascicule. Facsimile 1976. Editions Sciences Nat, Paris; 76 pp.
TURNER, A.J. 1922. Revision of Australian Lepidoptera. Saturniidae, Bombycidae,
Eupterotidae, Notodontidae. Proceedings of the Linnean Society of New South Wales 47: 348-
390.
Australian Entomologist, 2005, 32 (2): 65-66 65
A NOTE ON THREE UNUSUAL SPECIES OF PHYTALMIINAE
(DIPTERA: TEPHRITIDAE) FROM PAPUA NEW GUINEA
D.L. HANCOCK
PO Box 2464, Cairns, Qld 4870
Abstract
Robertsomyia paradoxa Hardy is transferred back to the Tephritidae from the Platystomatidae
and placed in the Sophira complex, while Stymbara vagaria Walker is transferred from the
Sophira complex to the Acanthonevra subgroup of genera (both in the Acanthonevra group of
genera in tribe Acanthonevrini). Tanaodema porrecta Hardy, originally placed in tribe Trypetini
(subfamily Trypetinae) is placed in the Epacrocerus group in tribe Epacrocerini.
Introduction
Robertsomyia paradoxa Hardy, Stymbara vagaria Walker and Tanaodema
porrecta Hardy are three unusual fruit fly species found in Papua New
Guinea (Hardy 1983, 1987, 1988). Their systematic relationships have been
uncertain. R. paradoxa was originally placed in tribe Phytalmiini (Hardy
1987) and transferred to family Platystomatidae by Hancock and Drew
(2003) but this was incorrect (D.K. McAlpine, pers. comm.). S. vagaria was
placed in the Sophira complex of genera in tribe Acanthonevrini by Hancock
and Drew (2003). T. porrecta was originally placed in subfamily Trypetinae,
tribe Trypetini (Hardy 1987) and provisionally transferred to subfamily
Tephritinae by Hancock (1991).
Robertsomyia paradoxa Hardy
As noted by McAlpine (2001, pers. comm.), the break in the costa above the
tip of vein Sc is a distinguishing character separating the Tephritidae from the
Platystomatidae. Given insufficient weight by Hancock and Drew (2003), its
presence excludes R. paradoxa from the latter family. While it does appear to
belong in subfamily Phytalmiinae, the widely forked vanes of the
phallapodeme [= aedeagal apodeme] exclude it from tribes Phytalmiini and
Phascini (and also from the unplaced Polyara group of genera), in which the
vanes are largely fused into an inverted Y-shaped structure.
The vanes of the phallapodeme are also widely forked in the Sophira
complex in tribe Acanthonevrini; other characters of R. paradoxa, including
its reduced chaetotaxy and biology, are also consistent with this complex.
Accordingly, Robertsomyia Hardy is added to the New Guinea-Pacific genera
previously placed in the Sophira complex of the Acanthonevra group of
genera by Hancock and Drew (2003). The complete absence of head and
thoracic setae and the tuberculate scutellum are characters unique to
Robertsomyia within the family. The elongate, apically convex, non-lobate
wing cell bcu and sclerotised metathoracic postcoxal bridge resemble those
seen in Adramoides Hardy from southern Thailand.
Larvae of R. paradoxa breed in living stems of Bambusa sp. (Poaceae:
Bambusoideae) (Hardy 1983).
66 Australian Entomologist, 2005, 32 (2)
Stymbara vagaria Walker
The presence of some yellow setae on the head, the wrinkled preglans area of
the distiphallus and the shape of the phallapodeme, hypandrium, epandrium
and surstylus (Hardy 1988) clearly ally Stymbara Walker with Cribrorioxa
Hering, Ectopomyia Hardy, Hexacinia Hendel and Rioxa Walker in the
Acanthonevra subgroup of genera, to which it is transferred.
Tanaodema porrecta Hardy
The presence of a break in the costa above the tip of vein Sc and a distinct
katepisternal seta (D.K. McAlpine, pers. comm.) confirm the placement of T.
porrecta in the Tephritidae. The shape of both the face and the antenna, with
its second segment expanded on its inner margin, suggest a relationship with
the Epacrocerus group of genera (tribe Epacrocerini) (Hardy 1987, D.K.
McAlpine, pers. comm.), in which some genera also show a peculiarly
modified head, although to a much lesser extent (Hardy 1982). The presence
of a blunt apex to wing cell bcu and the placement of the dorsocentral setae
anterior to the line of the supra-alar setae support this suggestion. Tanaodema
Hardy is therefore added to the genera placed in tribe Epacrocerini by
Hancock and Drew (2003). It is characterised by a remarkably elongate head
with no frontal setae, 2 pairs of orbital setae and the eye situated medially,
porrect antennae with the second and third segments almost circular in shape
and the arista almost bare, 2 scutellar setae and narrow wings with no distinct
costal seta above the tip of vein Sc and a narrow, elongate pterostigma.
Acknowledgement j
I am grateful to David McAlpine (Australian Museum, Sydney) for his
perceptive comments on an earlier draft of this paper.
References
HANCOCK, D.L. 1991. Revised tribal classification of various genera of Trypetinae and
Ceratitinae, and the description of a new species of Taomyia Bezzi (Diptera: Tephritidae).
Journal of the Entomological Society of Southern Africa 54(2): 121-128.
HANCOCK, D.L. and DREW, R.A.I. 2003. New species and records of Phytalmiinae (Diptera:
Tephritidae) from Australia and the South Pacific. Australian Entomologist 30(2): 65-78.
HARDY, D.E. 1982. The Epacrocerus complex of genera in New Guinea (Diptera: Tephritidae:
Acanthonevrini). Memoirs of the Entomological Society of Washington 10: 78-92.
HARDY, D.E. 1983. Robertsomyia an aberrant new genus of Phytalmiini from Papua New
Guinea (Tephritidae: Diptera). Proceedings of the Hawaiian Entomological Society 24: 227-231.
HARDY, D.E. 1987. The Trypetini, Aciurini and Ceratitini of Indonesia, New Guinea and
adjacent islands of the Bismarcks and Solomons (Diptera: Tephritidae: Trypetinae).
Entomography 5: 247-373.
HARDY, D.E. 1988. Fruit flies of the subtribe Gastrozonina of Indonesia, New Guinea and the
Bismarck and Solomon Islands (Diptera, Tephritidae, Trypetinae, Acanthonevrini). Zoologica
Scripta 17: 77-121,
McALPINE, D.K. 2001. Review of Australasian genera of signal flies (Diptera:
Platystomatidae). Records of the Australian Museum 53(2): 113-199.
Australian Entomologist, 2005, 32 (2): 67-77 67
VARIATION IN POPULATION DENSITY OF CICADAS
(HEMIPTERA: CICADIDAE) IN THE SYDNEY REGION:
PSALTODA MOERENS (GERMAR), THOPHA SACCATA
(FABRICIUS) AND THE ‘SPRETA’ FORM OF CYCLOCHILA
AUSTRALASIAE (DONOVAN)
GEOFF S. HUMPHREYS
Division of Environmental and Life Sciences, Macquarie University, Sydney, NSW 2109
Abstract
Various sampling strategies were assessed to estimate the population density of emerging
nymphs/adult cicadas for three non-periodic species in the Sydney region: Cyclochila
australasiae (Donovan), Psaltoda moerens (Germar) and Thopha saccata (Fabricius). Densities
for all three species under dry sclerophyll woodland to forest are likely to be 0.5-2/m’. Density
increases as the vegetation becomes more mesic to 2-5/m? under rainforest for C. australasiae.
These densities are similar to other non-periodic species but low when compared with the
periodical cicadas, especially Magicicada septendecim (Linnaeus) and M. cassini (Fisher), of
eastern USA. Because of the possible loss of nymphs to predation and dispersion, the most
reliable estimates of population density are counts based on emergence burrows. In contrast,
counts based on careful searches of exuviae yielded as little as 40% of the burrow count.
Introduction
As part of a longer term study on the effect of soil-transporting fauna on soil
formation in the Sydney region of New South Wales, an attempt has been
made to measure the amount of soil displaced within the soil and onto the
surface (e.g. Humphreys 1989, 1994). However, this project has been
hampered by a lack of information on the basic ecology of various soil
animals. This certainly applies to cicadas, where the below ground activities
are known in general terms only (e.g. Moulds 1990) and the full life cycle has
yet to be determined for any Australian cicada species.
In particular, there is little information on population density, which is
required to estimate rates of bioturbation. A similar situation occurs for most
cicada species globally and it has only been in the last decade that reasonable
information on densities of non-periodical cicadas from a wide range of
environments has become available (Dean and Milton 1991, Ewart 2001,
Paterson et al. 1997, White and Sedcole 1993), although Young (1972, 1975,
1984) had reported earlier on several central American species.
The primary purpose of this paper is to report on estimates of cicada
populations at three sites in the Sydney region. Data from two of these sites
were obtained more than 20 years ago but have not been published before,
although the estimated rates of soil displacement have appeared in summary
tables provided by Humphreys and Mitchell (1983) and Paton et al. (1995).
More recent data have been obtained from the third site. By sampling along
an environmental gradient this site provided an opportunity to explore
whether or not population density changed with vegetation from drier to
moister communities.
68 Australian Entomologist, 2005, 32 (2)
A final issue to be considered is the method of estimating populations, which
is based mainly on counts of exuviae, adults or emergence holes (termed
burrows in this paper), although acoustic methods have been tried also (e.g.
Paterson et al. 1997). To date, the reliability of these methods of counting has
not been fully assessed, although there is an obvious need for this since
collection of exuviae is largely non-invasive and, hence, a preferred approach
in many situations. In contrast, a search for burrows may necessitate site
disturbance such as the removal of litter, vegetation and the upper soil layer.
Study sites
The Cattai site, 39 km NW of Sydney, is positioned on the western margin of
the Hornsby Plateau at an altitude of 100-120 m a.s.l and receives an average
annual rainfall of 900-1000 mm. Glenorie, 5 km to the east, receives an
average of 929 mm. A micaceous unit of the Hawkesbury Sandstone gives
rise to a Yellow Podzolic (Stace ef al. 1968: see Table 1 for other soil
classifications) on the area examined for cicadas. The natural vegetation
consists of dry sclerophyll open forest of Angophora bakeri, Corymbia
eximia, C. gummifera, Eucalyptus punctata, E. sparsifolia and Syncarpia
glomulifera, with a shrub understorey of Leptospermum attentuatum and
species of Acacia, Grevillea, Hakea and Persoonia.
The Cordeaux site, 64 km SW of Sydney, lies on the Woronora Plateau at an
altitude of 320-340 m a.s.l and receives an average annual rainfall of 950-
1000 mm. A quartose unit of the Hawkesbury Sandstone gives rise to Earthy
Sands and Lithosols. The natural vegetation consists of a dry sclerophyll
open forest of Corymbia gummifera, Eucalyptus globoidea, E. sclerophylla
and £. sieberi, with a shrub understorey of Leptospermum attentuatum and
species of Banksia, Hakea, Isopogon, Lambertia, Lomatia and Persoonia.
Table 1. Soil classification.
Site Australian soil classifications American
Great Soil Group! Factual Key new Australian? Soil Taxonomy*
Cattai Yellow Podzolic Dy2.41 Yellow Chromosol Haplohumult
Cordeaux Earthy Sand Uc5.22 Orthic Tenosol Dystrustept
Mt Wilson:
RF & WSF Krasnozem Gn3.11 Red Ferrosol Hapludox
DSF i Gn3.21 Brown Ferrosol fs
'Stace et al. 1968; "Northcote 1979; *Isbell 1996; *Soil Survey Staff 1998.
The Mt Wilson site, 87 km WNW of Sydney, is a hill top at 980 m a.s.l. to
the east of an expanse of cleared basalt terrain in the Blue Mountains. Three
vegetation communities were sampled: a wet sclerophyll, tall open forest
(WSF) on the summit; closed rainforest (RF) on the southern slope 100 m
from the summit; and dry sclerophyll open forest (DSF) on the northwestern
Australian Entomologist, 2005, 32 (2) 69
slope, also 100 m from the summit. The DSF had a tree stratum of
Eucalyptus fastigata and Acacia penninervis, with a shrub layer of Lomatia
and Daviesia. The WSF had an upper tree stratum of Eucalyptus blaxlandii
and £. viminalis and a lower tree stratum of A. penninervis, Hedycarpa
angustifolia and the tree fern Cyathea australis. The RF had a tree stratum of
Acacia melanoxylon, Ceratapetallum apetalum, Doryphora sassafras,
Eucalyptus blaxandii, Pittosporum undulatum and Quintinia sieberi. The tree
fern, Dicksonia antarctica, was conspicuous at the site. A deep, reddish
Krasnozem soil, developed on Tertiary basalt, occurred at the first two
communities. On the drier site basaltic colluvium overlayed a shale band,
possibly a thin remnant of Triassic Wianamatta Group. The nearest long term
rainfall records are from Bilpin (14 km to the east) and Mt Victoria (14 km to
the southwest), which average about 1459 and 1019 mm respectively. A 26
year rainfall record at Mt Wilson in the early 1900s provided a mean of 1168
mm (McLuckie and Petrie 1927). At all sites the dry sclerophyll forest is
particularly fire prone but this effect decreases where the vegetation becomes
more mesic.
Identification
Cicada samples from Cattai and Cordeaux were identified by staff at the
Australian Museum in 1979. They consisted of the Redeye, Psaltoda
moerens (Germar) and the Double Drummer, Thopha saccata (Fabricius),
from Cattai and Cordeaux respectively. Specimens from Mt Wilson were
collected in November and December 2002 and identified by the author as
the Masked Devil or ‘spreta’ form of Cyclochila australasiae (Donovan),
using the descriptions of Goding and Froggatt (1904) and Moulds (1990).
These specimens displayed a black abdomen, a tan thorax and head with
distinct black markings, including a transverse black bar joining the eyes and
a longitudinal black line down the centre of the pronotum and mesonotum
(dorsal view) but not across the intervening segment of the pronotal collar.
Length of the forewing ranged from 50.5 to 56 mm (n=10, mean 53.5). One
example of the yellow form (Yellow Monday) was also found. The ratio of
male to female nymphs was 0.91 (n=189), which is similar to many other
cicada species in Australia (e.g. Ewart 2001) and elsewhere (e.g. Young
1975, 1980; White et al. 1979).
Methods
Different approaches were adopted to estimate cicada populations. Nymphal
exuviae were counted from 10 x 10 m quadrats at Cattai (n=4) and Mt Wilson
(n=3). This plot size was selected to match the scale of apparent homogeneity
at the site, based on a combination of soil variability and the associated
vegetation. Four quadrats were placed side by side around a soil pit at Cattai
and the exuviae collected from tree trunks and within a 2 m radius of larger
trees, on 26 January 1979. At Mt Wilson (on 31 December 2002) the three
quadrats sampled different vegetation types and were positioned adjacent to
70 Australian Entomologist, 2005, 32 (2)
existing soil pits. This sampling period was at the end of the period of
emergence at this site.
The ‘spreta’ form of C. australasiae was first noted at Mt Wilson and on Mt
Banks, another basalt cap just to the south, on 28 September 2002.
Subsequent visits to Mt Wilson indicated that this species was numerous
throughout November and early December. The period of emergence is
earlier than that found for C. australasiae around Armidale (Coombs 1996).
Unlike the Cattai site, however, a systematic search was conducted among
shrubs and the litter layer as well as on tree trunks.
Twenty 5 x 1 m quadrats were used at Cordeaux to record the number of dead
adults between December 1978 and March 1979. These were the same
quadrats used to monitor ant and earthworm activity on a monthly basis
between July 1978 and July 1979 (Humphreys 1981). In addition, the number
of nymphal burrows was recorded from seven soil pits dispersed over a
hectare at Cattai and excavated in early 1979. These pits amounted to a
surface area of 10.8 m^. In order to assess the apparent accuracy of the
exuviae counts at Mt Wilson, five random 1 m° plots from each of the 10 x
10 m quadrats were carefully searched for additional exuviae and cicada
burrows on 13-14 February 2003. These random plots were cleared of ground
cover and the soil was carefully scraped away to expose burrows.
Results and discussion
Population estimates based on large quadrat counts
Estimating the population density of cicadas at a site has proved not to be
straightforward (Tables 2 and 3). The small sample size, lack of replication
and differences in methodology are obvious deficiencies. Even though the 10
x 10 m plot size was selected to match the scale of apparent homogeneity at
the site, it became apparent that the distribution of exuviae was not always
random. Under RF at Mt Wilson there was some clustering of exuviae on and
around the base of a large red stringy-bark (Eucalyptus blaxlandii), whereas
under WSF and DSF the exuviae seemed to be randomly dispersed, even
though each plot contained at least one large tree. At Cattai the four quadrats
yielded counts of 0, 2, 8 and 12 and at Cordeaux the 20 smaller quadrats
provided total counts from 0 to 3 (7 plots of 0, 7 of 1, 4 of 2 and 2 of 3).
Similar variation has been reported in other studies. Thus, 20 random plots in
a woodland of brood II of the periodical cicada Magicicada septendecim
(Linnaeus) provided a range of densities of 0.7 to 56.7 m°, with a mean of
5.0 m° (Dybas and Lloyd 1974). In non- periodical species in the arid Karoo
of South Africa, twelve 5 x 5 m plots along a drainage line yielded densities
of 9-62 and 2-31 away from the drainage lines (means of 21.9 and 15.2
respectively) (Dean and Milton 1991). In a study in southeast Queensland,
10% of the sample sites contained no exuviae (Ewart 2001). In comparison,
the neotropical cicada Procollina biolleyi is reported to be uniformly
Australian Entomologist, 2005, 32 (2) 71
distributed in a humid montane forest site in Costa Rica away from trail
edges. In contrast, a less numerous and smaller species at the same site,
Carinetta spinocosta, exhibited a patchy distribution (Young 1975), although
no data were provided to quantify this. However, in a subsequent study
involving a lowland species, Zammara smaragdina, considerable spatial
variation in density was noted, with individual plots varying by an order of
magnitude or more in seven of the ten sampling dates (Young 1980). Young
(1980) also noted that about 15% of the total population came from one of 23
plots and that some of these other plots yielded counts of <0.5%.
Table 2. Population estimates at Cattai and Cordeaux in dry sclerophyll vegetation.
Site Plots Species Total plot Sample type Density
area (m°) (n/ 100 mô)
Cattai A-D Psaltoda moerens 400 exuviae 5.5
Cattai soil pits* Psaltoda moerens 10.8 burrows 148
Cordeaux A-T Thopha saccata 100 adults 21
* in addition there was one trapdoor spider burrow.
Table 3. Population estimates of C. australasiae at Mt Wilson.
Parameter Density per ha under different vegetation
types (n/100 m°)
Dry Wet Rainforest
sclerophyll sclerophyll
(a) No. of exuviae in 10x10 m plot 11 73 106
(b) No. of additional exuviae from 1x1m plots* 40 100 80
(c) Total No. of exuviae [= (a) + (b)]* 51 173 186
(d) No. of burrows from 1x1m plots* 80 160 460
(e) Proportion of total exuviae to burrows 63.8% 108.1% 40.4%
[=100 (c)/ (d)]
Estimated population 50-100 150-200 200-500
*scaled to 100 m’.
Population estimates based on exuviae compared with burrows
There is also a pronounced difference between exuviae and burrow counts.
This was greatest at Cattai, where the burrow count exceeded the exuviae
count by a factor of 25 (148 v. 5.5 per 100 m°, Table 2). Apart from possible
loss by predation (see below), this difference might be attributed to one or
more reasons. Firstly, the exuviae count was confined to the larger trees only
and ignored the surrounding understorey. Secondly, the soil pits may have
been biased to sites of unusually higher density, though there is no obvious
reason that this should be so. Thirdly, the burrows may include nymphs other
than the last instar. However, as most of the burrows contained a sizable
72 Australian Entomologist, 2005, 32 (2)
nymph it indicates that they were mostly at the final instar stage.
Furthermore, it is thought that most burrowing takes place during the final
instar phase and within a few months of ecdyis, as demonstrated for the
periodical cicada (Cory and Knight 1937). Thus, even if it is assumed that
only half of the burrows contained final instar nymphs, the density is still
much higher than exuviae counts suggest. It was partly this discrepancy
between exuviae and burrow counts at Cattai that lead to the sampling regime
pursued at Mt Wilson. Nevertheless, the results at Mt Wilson also established
that burrow count exceeded the initial exuviae count but by a reduced level of
between 1.6 and 5.8 (Table 3, row ‘d’ to ‘b’), which was further reduced to
<2.5 for the total exuviae count (Table 3, row ‘d’ to ‘c’), although on the wet
sclerophyll plot the exuviae count slightly exceeded the burrow count.
A similar degree of variation between exuviae and burrow counts was
reported by Strandine (1940) for the periodical cicada. Nevertheless, the
reduction in the discrepancy still leaves a sizable difference in density. It
would seem that the type of exuviae count undertaken in the present study
provides a moderately accurate estimate of the probable nymphal population
that is correct at the order of magnitude level and that small plots, stripped of
ground cover and litter, yield a better estimate than is obtained from
searching larger plots where the vegetation cover is left undisturbed. Thus, at
Mt Wilson the total exuviae count estimated 40->100% of the burrow count
(Table 3, row ‘e’) but for the initial exuviae count the estimate was only 13 to
46% (Table 3, row ‘a’ to ‘e’). Unfortunately, the variation exhibited between
the three vegetation types is not conducive to determining realistic correction
factors. Perhaps the most reliable method is to use cages to catch emerging
nymphs (e.g. Young 1980) but this approach requires monitoring at frequent
intervals and may not be suited to remote sites.
A possible reason for the discrepancy between exuviae and burrow counts is
predation, for it is well known that emerging nymphs and adults are eaten by
birds (e.g. Young 1984, Ewart 2001). For example, the population count at
the Cordeaux site consisted of dismembered adults of Thopha saccata, of
which the abdomen appears to have been the main food item. In North
America there are several reports describing the voracious appetites of birds
feeding on emerging and adult periodical cicadas, so much so that for periods
of up to several weeks all cicadas may be consumed (Beamer 1931, Lloyd
and Dybas 1966). In addition, it is possible that exuviae are dispersed by
wind and rain and therefore removed from the sample plot. Nevertheless, loss
from one plot must lead to gain elsewhere and hence if an adequate sample
size is employed this effect should balance out, although it may explain some
of the variation in counts between individual plots.
Comparison of population density and periodicity
Because of these differences and unresolved issues, the population density at
Mt Wilson is expressed as a range of 0.5-1 m° under dry sclerophyll
Australian Entomologist, 2005, 32 (2) 73
vegetation, 1-2 m? under wet sclerophyll and 2-5 m° under rainforest. At
Cattai the density of Psaltoda moerens was probably around 1-2 m°, whereas
the Thopha saccata data are insufficient to suggest a realistic estimate. These
densities are very low in comparison to the well studied periodical cicadas,
which commonly attain densities >10 m° and sometimes >100 m` (e.g.
Dybas and Davis 1962, White et al. 1979), although in some cases the
densities were much lower even at sites which are considered to contain high
populations (e.g. Dybas and Lloyd 1974). Nevertheless, large population
densities attained by Magicicada spp. are thought to be in part a product of
behavioural passiveness, whereby adults make no attempt to avoid predators
or capture.
Population densities of other non-periodical cicadas in North America are
thought to be much smaller (Beamer 1931, Lloyd and Dybas 1966), which
would make them similar to the three Sydney species considered in this study
and to other non-periodical cicadas from a wide range of environments where
densities are typically <1 to 5 m? (Table 4). An exception to this was the
average density of 10.6 m° recorded in 1973 for Procollina biolleyi in the
highlands of Costa Rica, which contrasts with other neotropical species
which are mostly <3 m’ ? (Young 1975, 1980). The high population density by
a non-periodical species may imply causal factors other than the predator-
prey explanation noted above.
Although less well studied, non-periodical cicadas appear to exhibit some
level of emergence each year, usually in a preferred season but with higher
numbers appearing every few to several years. This seems to apply to larger
taxa, at least, and implies the existence of an emergence and survival strategy
different from the periodical cicadas, with their well recognised and very
predictable 13 or 17 year broods. However, although a degree of periodicity
occurs in at least some non-periodic taxa, the fact that it has rarely been
demonstrated may indicate that the pattern, if it exists, is somewhat irregular.
For the three Sydney species examined in this study the degree of periodicity
is not known with any certainty, although it is thought that Cyclochila
australasiae has a 6-7 year cycle (Moulds 1990). This could reflect a partial
influence of ENSO (El niño - Southern Oscillation quasi-periodic climate
cycle) events in which lower survival in drought years is expected, especially
if fire occurs in the period just after eggs are laid. Detailed analysis of the
Southern Oscillation indicates a strong periodicity of 6 years with weaker 3,
3.8 and 10-12 year cycles in Australia (Burrows 1992). In Southern Africa
the strongest ENSO periodicity is about 18 years, which is similar to the
period between the last two recorded emergences of Quitillia cf. conspersa in
c. 1972-3 and 1988-9 (Dean and Milton 1991). This climatic link does not
easily apply to the periodical cicada as there are no known 13 or 17 year
climatic cycles (Burrows 1992) and because different broods, although
operating at 13 or 17 years, exist in different calendar year cycles.
74 Australian Entomologist, 2005, 32 (2)
Table 4. Comparison of non-periodical cicada population estimates (quoted on a
hectare basis as is common in international literature).
ee
Location and environment Species Mean [and Variation] Refer-
(No/ ha) ence
Karoo, Southern Africa; Quintillia cf. conspera 7,400 [se 1,036] 1
arid shrubland
New Zealand; sub-alpine Guild of 6 species 10,100 [range: 865-20,000] 2
Arizona; riparian zone in Diceroprocta apache 50,000 [range: 7,000- 3
arid setting 118,000]
Tuscany; Mediterranean Cicada orni 33,660 [se=5,285] 4
pine forest & olive grove 13,201 [se=3,551]
SE Queensland; humid Psaltoda plaga, P. 8,370 [nd] 5
sub-tropical; coastal WSF claripennis & 4 others
Costa Rica; humid tropics; Procollina biolleyi 105,800 [nd, but var] 6
secondary montane RF
Costa Rica; humid tropics; Fidicina sericans 93,000 [nd, var] 7
lowland RF F. spinocosta 15,000 [nd,var]
Zammara smaragdina 11,700 [8,000-17,300]
Cattai, Sydney; humid Psaltoda moerens 550 [range: 0-1,200] 8
temperate; DSF 14,800 [nd]
Cordeaux, Sydney; humid Thopha saccata 2,100 [range: 0-6,000] 8
temperate; DSF
Mt Wilson, Blue Mts; Cyclochila 8,000 [5,000-10,000]* 8
humid temperate; DSF, australasiae 16,000 [15,000-20,000]*
WSF and RF respectively
46,000 [20,000-50,000]*
'Dean and Milton 1991; ?White and Sedcole 1993, using unadjusted density figures
(see Lane 1993); 7Andersen 1994; ‘Patterson et al. 1997; “Ewart 2001; Young 1975;
Young 1980; *this paper. se = standard error; nd = not determined; var = variable; * =
estimate (see text).
Population variation along an environmental gradient
There was a noticeable increase in density of C. australasiae with the
moisture status of the vegetation at Mt Wilson, i.e. from dry sclerophyll to
wet sclerophyll and thence rainforest. This trend was apparent regardless of
the measure used, i.e. initial exuviae count, corrected exuviae count or
burrow count (Table 3, rows (a), (c) and (d) respectively). This result implies
that habitat differences exert a strong influence on population density. The
strength of this relationship was tested on the best quality data at this site, viz.
the burrow densities. The burrow data satisfied the Ryner-Joiner test for
normality (R: 0.9851, P >0.1000) and the Bartlets test for homogeneity (P-
value 0.895) and thus indicated an adequate sample size. Based on one-way
ANOVAs and Fisher pair-wise test, the burrow density in the RF was
significantly different from both the WSF (P=0.018) and DSF (P= 0.004) but
Australian Entomologist, 2005, 32 (2) 75
the latter two could not be separated (P=0.397), despite the mean of the WSF
being twice that of the DSF site. Presumably the rainforest provides a better
or more stable habitat in terms of maintaining food supply and/or a reduced
impact from predators. If Australian cicada species are xylem feeders, as
demonstrated for the periodical cicadas (White and Strehl 1978), a habitat
less affected by dry conditions and therefore pronounced water stress on
plants, may favour survival of nymphs and therefore yield greater
populations. It is noteworthy that the sampling at Mt Wilson occurred during
a prolonged drought (late 2002) but, even so, the clayey soil at both the wet
sclerophyll and rainforest communities, which contained large earthworms
(5-8 mm diameter and 200-300 mm long), was much moister than at the dry
sclerophyll site. Whether or not it is moisture availability and hence greater
plant vigour that is significant or some other factor remains to be evaluated.
Young (1984) suggested a strong cicada - legume tree host association in the
humid neotropics on the assumption that the xylem fluid from legumes was
more nutritious than other host trees. As Young (1984) noted, the same might
apply to trees with micorrhizal associations and this raises a tantalising
prospect in Australia, as many eucalypts and closely related genera possess
micorrhiza.
It is interesting to note that similar population densities occured under the
same vegetation structural type and when the same type of measure was
applied, despite different species and locations. This is evident in the general
survey under dry sclerophyll forest, where densities of 5.5, 11 and 21/100m”
occurred at Cattai, Mt Wilson and Cordeaux respectively (Tables 2 and 3). Of
the three species considered, Thopha saccata is the largest cicada in Australia
and the other two species fall within the large size group for Australian taxa.
Thus it seems that a similar habitat, which in this case is a dry sclerophyll
forest, may exert a similar set of constraints on cicada populations, although
this may be conditional on species of similar size being compared. This
assumes, of course, that the three species were studied at the same life stage,
i.e. at peak emergence. Whether or not this was the case is uncertain except to
note that the attempts to record population in the 1978-79 summer (Cattai and
Cordeaux) and the 2001-02 summer (Mt Wilson) were prompted by the
observation that cicada activity was particularly pronounced on those
occasions.
Conclusions
Population densities for three large cicada species in the Sydney region were
estimated to be 0.5-2/m? under dry sclerophyll forest at three different
locations. An increase in density was shown for one species, C. australasiae,
as the vegetation assumed a more mesic character, reaching 2-5/m? under
rainforest. These densities were similar to many other non-periodic species
but up to one or two orders of magnitude less than those reported for the
periodical cicadas in North America.
76 Australian Entomologist, 2005, 32 (2)
Of the methods used for estimating population density counts, burrows gave
the highest values and, hence, were considered to be most reliable. However,
when this option is not feasible, such as when disturbance of the litter layer or
surface soil is not desired, a count based on exuviae provided an estimate that
was at least 40% of the burrow count.
Acknowledgements
I thank staff at the Australian Museum in Sydney, especially Mr G.
Holloway, for identifying various specimens, Ben Harrington for the
vegetation description at Mt Wilson and Dr R. Michael Bourke and William
Humphreys for assisting in the exuviae count at Mt Wilson. The work at Mt
Wilson was conducted under licence with NSW National Parks & Wildlife
Service (Scientific Investigation Licence A3007). Earlier work at Cordeaux
was conducted with permission of the former Metropolitan Water, Sewage
and Drainage Board, whose relevant functions are now under the Sydney
Catchment Authority. The helpful comments from two referees are gratefully
acknowledged.
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Journal of Zoology 20: 38-51.
WHITE, J. and STREHL, C.E. 1978. Xylem feeding by periodical cicada nymphs on tree roots.
Ecological Entomology 3: 323-327.
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Procollina and Carineta in a mountain forest. Biotropica 7: 248-258.
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Biotheoretica 33: 163-198.
78 Australian Entomologist, 2005, 32 (2)
MISCELLANEOUS NOTES
The following notes on new butterfly distribution and food plant records are
abstracted from the News Bulletin of the Entomological Society of Queensland and
were first published during 2004 in the volume and parts indicated.
Acraea andromacha andromacha (Fabricius) [Nymphalidae] - The role of Hybanthus
spp. (Violaceae) as food plants for this species in SE Qld has not been well
documented. In February 2004, in the western suburbs of Brisbane, larvae were
observed near the ground in large numbers, defoliating H. stellarioides (Domin) P.J.
Forst., during periods when this herbaceous plant was flowering after periods of rain.
In March 2004, at Wondul Range National Park, adults were abundant in the apparent
absence of Passiflora spp. (Passifloraceae). One female was observed ovipositing on
H. monopeltatus (Shult.) Domin. These observations suggest that the use of
Hybanthus spp. as food plants is more widespread than previously recorded and may
explain the occurrence of A. andromacha in areas where Passifloraceae vines are
scarce or absent. - Little known foodplants of the ‘glasswing’ Acraea andromacha
andromacha (Fabricius) - Don Sands - 32(2): 43-44 (2004).
Heteronympha_ mirifica (Butler) [Nymphalidae] - Numerous specimens were
identified between Tewantin and Boreen Point and near Pomona in SE Qld between
Nov. 2003 and May 2004. Known previously south of the Bunya Mts and Eumundi,
these records provide new northernmost coastal localities. - Interesting distribution
records of butterflies in south east Queensland - Russell Mayo - 32(3): 64-65 (2004).
Geitoneura acantha (Donovan) [Nymphalidae] - Numerous specimens were
encountered near Imbil and Pomona, SE Qld, in December 2003. These records
confirm its presence in the coastal areas north of Brisbane. - Interesting distribution
records of butterflies in south east Queensland - Russell Mayo - 32(3): 64-65 (2004).
Danaus affinis affinis (Fabricius) [Nymphalidae] - Regarded as a vagrant south of the
Richmond River in NE NSW, this species is well established at Laurieton and Forster
and is regularly encountered near the Hunter River, near Hexham, in suitable habitat.
Adults and early stages were located commonly in most months near Forster between
1999 and 2003 and at Laurieton on each of at least 10 visits over the past 20 years.
This suggests that the species is permanently established in central coastal NSW, at
least as far south as Forster and possibly the Hunter River. - Notes on the distribution
of Danaus affinis (Fabricius) - Russell Mayo - 32(4): 96 (2004).
Hypochrysops miskini Waterhouse [Lycaenidae] - At Eudlo, SE Qld, some larvae feed
on mature leaves of Smilax australis (Smilacaceae) but most use the canopy leaves of
Glochidion ferdinandi (Euphorbiaceae), a new food plant record. The larvae eat very
distinctive patches from the leaves of their food plant, first from the upper surface,
producing a spotted pattern, then from the under surface, leaving a patterned mosaic
that gradually skeletonises the leaf. Each larva is normally attended by 2 or 3
Anonychomyrma gilberti ants (Formicidae: Dolichoderinae). Larvae often eat during
daylight hours. When not eating, they remain hidden in bark or leaf litter where they
pupate singly or in groups. On the Sunshine Coast, the duration of the life cycle is
about 2 months, longer in winter when feeding may be suspended. Adults normally
fly high, at about 9-12 m, in the lower canopy. They usually emerge from pupae
around dawn. - A new food plant and biological notes for Hypochrysops miskini
(Lycaenidae) in south eastern Queensland - Andrew Atkins - 32(4): 96-98 (2004).
Australian Entomologist, 2005, 32 (2): 79-82 79
A NEW RECORD AND HOST ASSOCIATION FOR THE
PIGEONPEA POD FLY, MELANAGROMYZA OBTUSA (MALLOCH)
(DIPTERA: AGROMYZIDAE) AND NOTES ON ITS PARASITOIDS
IN THE NORTHERN TERRITORY, AUSTRALIA
J.R. MAKINSON', J.A. GOOLSBY’, D.E. MEYERDIRK?, A.A. KIRK*
and C.J. BURWELL’
'CSIRO Entomology, Australian Biological Control Laboratory, 120 Meiers Rd, Indooroopilly,
Old 4068. Email: Jeff:Makinson@csiro.au (corresponding author)
"USDA-ARS, Office of International Research Programs, Australian Biological Control
Laboratory, CSIRO Entomology, 120 Meiers Rd, Indooroopilly, Qld 4068
(current address: USDA-ARS, Kika de la Garza Subtropical Research Center, Beneficial Insects
Research Unit, 2413 E. Hwy 83, Weslaco, Texas 78596, USA)
USDA, APHIS, PPQ, 4700 River Rd, Unit 135, Riverdale, Maryland 20737, USA
“European Biological Control Laboratory, Campus International de Baillarguet, 34982
Montferriez sur Lez, France
*Biodiversity Program, Queensland Museum, PO Box 3300, South Bank, Qld 4101
Abstract
The pigeonpea pod fly, Melanagromyza obtusa (Malloch), is recorded for the first time from the
Northern Territory. This is also the first time it has been found feeding on the native legume
Cajanus latisepalus (S.T. Reynolds & Pedley) Maesen and the first record of a host association
for M. obtusa in Australia. Two parasitoids, Callitula sp. (Hymenoptera: Pteromalidae) and
Ormyrus sp. (Hymenoptera: Ormyridae) were reared from M. obtusa on C. latisepalus pods.
Introduction
The pigeonpea pod fly, Melanagromyza obtusa (Malloch), is one of the most
damaging pests of pigeonpea, Cajanus cajan (L.) Millsp. (Shanower et al.
1998). It is recorded as native to Australia (AICN 2004) and is also widely
distributed throughout Asia, from Japan and Pakistan to Papua New Guinea
(Shanower et al. 1998). M. obtusa is currently causing significant damage to
this important crop in the Caribbean, including Puerto Rico and the
Dominican Republic. Surveys were conducted in the tropical savannah of the
Northern Territory in Australia to search for pod fly parasitoids to support a
biological control program in the Caribbean.
Materials and methods
Two surveys of the mature green and brown pods of Cajanus species native
to the Northern Territory were conducted in March and May 2004. These
surveys resulted in five collections of pods from C. cinereus (F. Muell. Ex
Benth.) F. Muell., five from C. marmoratus (R. Br. Ex Benth.) F. Muell., four
from C. latisepalus (S.T. Reynolds & Pedley) Maesen, four from C.
reticulatus (Dryander) F. Muell. and one each from C. acutifolius (F. Muell.
Ex Benth.) Maesen and C. scarabaeoides (L.) Thouars.
The pods collected in the surveys were shipped to quarantine facilities in
Puerto Rico and the Dominican Republic to isolate and rear parasitoids of M.
obtusa. Pods of all Cajanus species collected in March were shipped, while
80 Australian Entomologist, 2005, 32 (2)
only C. latisepalus pods were shipped following the May survey. Small
subsamples of most collections were retained at the Australian Biological
Control Laboratory (ABCL) in Brisbane, Queensland.
Before the May shipment, 180 brown C. /atisepalus pods from each of three
collection sites were randomly selected to assess the level of damage by M.
obtusa. The presence or absence of holes, similar to those formed by M.
obtusa, was recorded for each pod. In order to develop an understanding of
the biology of M. obtusa on C. latisepalus, 100 of the pods retained at ABCL
were dissected once emergence had ceased. Voucher specimens of M. obtusa
were forwarded to Don Colless for identification. Molecular sequencing of
the CO2 gene was used for genetic comparison of M. obtusa from the
Northern Territory and Puerto Rico.
Results
Melanagromyza obtusa was only reared from pods of C. /atisepalus. Genetic
comparison of pod flies collected from the Northern Territory with those
from Puerto Rico revealed about a 7% variation over a 450 base fragment of
the mitochondrial CO2 gene, likely representing population level differences
(unpublished data). Two species of hymenopteran parasitoids also emerged
from the C. /atisepalus pods retained at ABCL: Callitula sp. (Pteromalidae)
and Ormyrus sp. (Ormyridae).
During the May survey, all three collections of C. /atisepalus pods, from the
Meningen turnoff, Victoria Highway (15°27.92’S, 131°24.12’E), the
Escarpment Walk, Gregory National Park (15°36.45’S, 131°06.89’E) and
along the Buchanan Highway (15°56.50’S, 130°38.60’E), showed evidence
of M. obtusa attack. Emergence holes similar to those formed by M. obtusa
were observed in 56.1% of the pods from Meningen, 79.4% from the site
along the Buchanan Highway and 88.9% of pods from the Escarpment Walk
site. Not all exit holes were caused by M. obtusa as a single lepidopteran
adult was reared from C. /atisepalus pods kept at ABCL, although no larvae
were observed. Over the same period, 84 M. obtusa were reared from the
pods, suggesting that the pod fly accounted for the majority of damage
observed in these collections. Dissections of 157 C. latisepalus pods, all the
material retained at ABCL, revealed 124 with empty M. obtusa pupal cases.
Usually a single M. obtusa larva fed on both seeds within a pod, although
complete development on a single seed was observed.
Discussion
Cajanus latisepalus is a spreading shrub to 1 m high, with oblong pods of
about 1.7 x 0.8 cm in size, densely covered in soft unmatted pale hairs and
usually containing two seeds (Reynolds and Pedley 1981). It was the only
host of M. obtusa observed. Nine species of Cajanus are listed as endemic to
the Northern Territory (Northern Territory Parks and Wildlife 2003). The
present surveys failed to find evidence of pod fly damage on five of these
Australian Entomologist, 2005, 32 (2) 81
species: C. acutifolius, C. cinereus, C. marmoratus, C. reticulatus and C.
scarabaeoides. Three other species were not surveyed. In contrast, Shanower
et al. (1998) reported M. obtusa on six species of Cajanus in India.
In Australia, M. obtusa has only previously been recorded from Queensland
(AICN 2004). This is the first record from the Northern Territory.
Considering the number of M. obtusa found in our surveys, it seems likely
that it will occur throughout the native range of C. latisepalus, which is
centred on the tropical savannah around the northern border of the Northern
Territory and Western Australia. C. /atisepalus was not previously known as
a host for M. obtusa. Previous collections of M. obtusa in Queensland do not
list any host information (Don Colless, pers. comm.), so it is likely that this is
the first record of a host association for M. obtusa in Australia.
Of the two parasitoids reared from M. obtusa on C. latisepalus, Callitula sp.
is an unrecorded association. Species of Callitula are parasites of small
Diptera, especially Agromyzidae (Bouček 1988). Bouček (1988) reported
that, in tropical countries, the main hosts of Callitula seem to be leaf-mining
or stem-mining species on herbaceous plants. This is the first pteromalid
recorded from M. obtusa.
A single species of Ormyrus has been reared previously from M. obtusa: O.
orientalis (Walker) (Narendran 1999). Ormyrus fredricki Narendran &
Sumodan has also been recorded attacking M. obtusa (Narendran et al. 1990,
Shanower et al. 1998), but this species is now considered a junior synonym
of O. orientalis (Narendran 1999). Narendran (1999) recorded 11 species of
Ormyrus from Australia, although none are known from the Northern
Territory. The Ormyrus species reared in this study does not run to any of the
described Australian species in Narendran’s (1999) key.
The discovery of M. obtusa on C. latisepalus in the Northern Territory and
the collection of two parasitoids, extends knowledge of the native range and
natural enemies of the pigeonpea pod fly. More importantly, it provides a
potential source of new biological control agents for the management of M.
obtusa as a pest of pigeonpea in the Caribbean and possibly India.
Acknowledgements
We wish to thank USDA-APHIS-IS for funding these surveys. We also
acknowledge Sally Dillon (Qld Department of Primary Industries, Biloela)
for suggesting the native Cajanus as possible pod fly hosts, and Bob
Harwood and Ian Cowie (NT Herbarium, Palmerston) for help with the
location and identification of the local species. Thanks also to Don Colless
(Australian National Insect Collection, CSIRO, Canberra) for identifying the
pod fly specimens and to Diana Hartley (CSIRO Entomology, Canberra) for
the genetic comparison. The authors wish to acknowledge Marc Coombs
(CSIRO Entomology) and Tom Shanower (USDA-ARS, Sidney, Montana)
for reviewing the manuscript and for their helpful comments.
82 Australian Entomologist, 2005, 32 (2)
References
AICN [AUSTRALIAN INSECT COMMON NAMES]. 2004. Melanagromyza obtusa
(Malloch). http:/Avww.ento.csiro.au/aicn/name_s/b_2169.htm
BOUCEK, Z. 1988. Australasian Chalcidoidea (Hymenoptera): a biosystematic revision of
genera of fourteen families, with a reclassification of species. CAB International, Wallingford;
832 pp.
NARENDRAN, T.C. 1999. Indo-Australian Ormyridae (Hymenoptera: Chalcidoidea).
Zoological Monograph, Department of Zoology, University of Calicut; 227 pp.
NARENDRAN, T.C., ABDURAHIMAN, U.C. and SUMODAN, P.K. 1990. Two new species
of Ormyrus Westwood (Hymenoptera: Ormyridae) from India. Gerbios New Reports 9: 114-117.
NORTHERN TERRITORY PARKS AND WILDLIFE. 2003. Checklist of Northern Territory
vascular plant species. http://www.nt.gov.au/ipe/pwent/docs/NTChecklist_Jan_03.pdf
REYNOLDS, S.T. and PEDLEY, L. 1981. A revision of At/osia (Leguminosae) in Australia.
Austrobaileya 1(4): 420-428.
SHANOWER, T.G., LAL, S.S. and BHAGWAT, V.R. 1998. Biology and management of
Melanagromyza obtusa (Malloch) (Diptera: Agromyzidae). Crop Protection 17(3): 249-263.
Australian Entomologist, 2005, 32 (2): 83-92 83
MIGRATION OF TWO SPECIES OF PIERIDAE (LEPIDOPTERA:
PAPILIONOIDEA) INSOUTHEASTERN AUSTRALIA
M.F. BRABY
School of Botany and Zoology, The Australian National University, Canberra, ACT 0200
Abstract
Observations on directional flight and distribution records of Appias paulina (Cramer) and
Catopsilia pomona (Fabricius) from southeastern Australia during late January and mid February
2004 are presented. The appearance of these otherwise tropical/subtropical species in the
southern temperate latitudes coincided with observations of a large scale southerly migration
recorded by several lepidopterists in southeastern Queensland and northeastern New South
Wales, 600-1200 km further NNE, and were almost certainly part of the same mass movement.
Climatic variables, particularly rainfall three months earlier following a severe dry period in
central Queensland, coupled with above average rainfall in SE Queensland during January 2004,
may have provided conditions which triggered the migration.
Introduction
For many tropical insects in Australia, particularly those associated with
seasonally ephemeral resources, migration is an important aspect of the life
history strategy (Jones 1987). While migration has been documented for
many species of butterflies and moths (Dingle et al. 1999), only for a limited
number of species in Australia are there sufficient data to interpret overall
movement patterns between geographical areas and between seasons (Dingle
et al. 1999, Greenslade et al. 1999). Records of butterfly migration frequently
consist of one or a few observations from single localities, often of limited
duration, thereby precluding broader understanding of the temporal and
spatial scale of the migration. An exception was perhaps the summer of 1973-
74, when significant range extensions and/or numbers outside the normal
areas of distribution were recorded for many species in southeastern Australia
(Quick 1974).
The summer of 2003-04 was remarkable for the large number of species
observed migrating simultaneously in southeastern Australia. In southeastern
Queensland, 14 species of butterflies (listed subjectively in decreasing order
of relative abundance: Tirumala hamata (W.S. Macleay), Catopsilia pomona
(Fabricius), Appias paulina (Cramer), Graphium eurypylus (Linnaeus),
Euploea core (Cramer), Hypolimnas bolina (Linnaeus), Junonia villida
(Fabricius), Cepora perimale (Donovan), Belenois java (Linnaeus),
Catopsilia pyranthe (Linnaeus), C. gorgophone (Boisduval), Protographium
leosthenes (Doubleday), Zizina labradus (Godart), Zizula hylax (Fabricius)),
representing four different families, were recorded moving southwards en
masse in exceptionally large numbers during early January 2004 by
lepidopterists in several localities. These localities included Pomona, 25 km
SSE of Gympie, Qld (R.P. Mayo, pers. comm.), the Eudlo district, 80 km
north of Brisbane, Qld (A.F. Atkins, pers. comm.) and Acacia Plateau in the
Border Ranges (c. 700 m) between Killarney, Qld and Legume, NSW (A.
Sundholm and R. Chin, pers. comms) (Fig. 1).
84 Australian Entomologist, 2005, 32 (2)
QUEENSLAND
BRISBANE
Killarney
Lennox
Head
NEW SOUTH WALES
NEWCASTLE
Canberra
ACT © Tallaganda State Forest
Fig. 1. Map of southeastern Australia, showing localities (e) referred to in the text
where adults of Appias paulina and Catopsilia pomona were observed migrating
south in SE Qld and NE NSW during January-February 2004 and where they were
recorded in SE NSW and the ACT around the same period. Dashed line (latitude
33°S) near Newcastle, NSW, represents putative southern (temporary) breeding limit
of the two species. The source of the migration was unknown but was probably in
central coastal Queensland in the vicinity of the Tropic of Capricorn (23°S).
This migration, amongst the largest observed for many years in terms of both
numbers of species and individuals, continued for several weeks well into
February. Some of the more abundant species, such as 7. hamata and C.
pomona, were first noted in smaller numbers as early as late October or
November 2003 and continued until about April 2004 (A.F. Atkins and R.P.
Mayo, pers. comms). Other migratory species, such as Badamia
exclamationis (Fabricius), Eurema herla (W.S. Macleay), Junonia orithya
(Linnaeus) and Hypolimnas misippus (Linnaeus), which are more common in
tropical latitudes and rarely seen in southeastern Queensland, also appeared
around the same time in late summer 2004 (Mayo 2004 and pers. comm.).
Australian Entomologist, 2005, 32 (2) 85
Further south in New South Wales, several species, including T. hamata, C.
pomona, A. paulina, G. eurypylus, E. core, C. perimale and B. java, were
recorded migrating southwards at Lennox Head in northeastern New South
Wales during January-February 2004 (C.G. Miller, pers. comm.). Around the
same time, an influx of T. hamata, C. pomona, A. paulina, H. bolina and
Danaus chrysippus (Linnaeus) was also noted in the Sydney district
(Robinson 2004), an area where these species are not normally present. On
the coast at Wollongong and on the southern tablelands near Bowral (640 m),
NSW, Brown (2004 and pers. comm.) recorded the appearance of three
species (C. pomona, A. paulina, G. eurypylus) throughout January and
February 2004, as well as a single specimen of P. /eosthenes (on 1 Feb. 2004)
in a bushland garden at Bowral. The occurrence of P. /eosthenes at Bowral
was notable as this represented the first recording of the species in the district
during the past 15 years of observation (S.S. Brown, pers. comm.).
Here I report on several observations of two pierid species, A. paulina and C.
pomona, made opportunistically in the Australian Capital Territory (ACT)
and southeastern New South Wales in January-February 2004, which may
have been part of the same mass movement near the coast of southeastern
Queensland and northeastern New South Wales. Small numbers of D.
chrysippus were also recorded flying west, between mid February and mid
March 2004, in the Belconnen area of the ACT and nearby areas but these
observations are not detailed here. I use the term ‘migration’ in the sense of
Dingle et al. (1999), in that the butterflies’ behaviour consisted of persistent
directional movement, undistracted by nectar sources (except for the
acquisition of energy, usually during the morning), but not necessarily to the
exclusion of oviposition on larval food plants.
Observations
Appias paulina
On 24 Jan. 2004, between 1530 and 1630 h (Daylight Saving Time), a mass
directional flight was recorded by G. Guy, S. Caton, L.J. Aitchison and the
author at Yowrie (36°19’S, 149°43’E; 200 m a.s.l.), about 15 km ENE of
Cobargo, NSW. Butterflies were moving rapidly (approx. 4 m/sec or 14
km/hr) in a southerly direction over a 30-40 m front along a riparian corridor
of tall open forest/woodland dominated by Allocasuarina cunninghamiana
(Casuarinaceae) growing on the banks of the Yowrie River. Butterflies were
counted moving across the front at a rate of one adult per minute during the
one hour observation period (i.e. 60/hr). The migration was limited to the
river valley, with adults flying within a few metres above the ground, either
directly over the water surface or along the banks. They were not observed
flying in the adjacent farmland. Most of the specimens of A. paulina
collected at Yowrie were ‘slightly worn’ to ‘worn’ and none was ‘fresh’, as
indicated by the extent of scale loss and damage to the wing margins.
However, two specimens (Figs 2-5) were in good condition, with only slight
86 Australian Entomologist, 2005, 32 (2)
damage/loss to the margins and scales. Variation in wing condition suggests
either a mixed age class or that individuals had travelled different distances.
Other observations of this species made by the author during the 2003-04
flight season in southeastern NSW and the ACT included: (1) 1 male
observed flying south over the summit of a hilltop at Peak Alone, Wandella
State Forest, NSW (36°18’S, 149°47’E; 960 m a.s.l.), 24 Jan. 2004, at about
1230 h (DST); (2) 3 males observed flying rapidly (approx. 6 m/sec or 22
km/hr) south in open parkland at Bega, NSW (36°40’S, 149°50’E; 50 m
a.s.l.), 26 Jan. 2004, during periods of patchy sunshine between 1245 and
1415 h (DST); (3) 1 female in worn condition observed between the Botany
and Zoology buildings, The Australian National University, Canberra, ACT
(35°16’S, 149°06’E; 590 m a.s.l), 27 Jan. 2004, at 1530-1532 h (DST); the
specimen appeared to be searching for flowers or possibly a perch on which
to settle; (4) 1 female observed, 2 males collected (and released) whilst
feeding at flowers in the Tallaganda State Forest (35°28’S, 149°34’E; 1100 m
a.s.l.), approximately 15 km ESE of Hoskinstown, NSW, 1 Feb. 2004, during
late morning and mid afternoon; (5) 2 females, 1 male observed at the same
location as the previous record, but on 14 Feb. 2004.
Catopsilia pomona
On 1 Feb. 2004, at 1130 h (DST), an adult C. pomona was observed by J.
Armstrong, C.E. Meyer and the author in eucalypt open forest on the Great
Dividing Range in the Tallaganda State Forest (35°28’S, 149°36’E; 1250 m
a.s.l.), approximately 16 km ESE of Hoskinstown, NSW. It appeared
uniformly white above but slightly pinker below and was probably a male
‘pale form’, distinguished from males of Appias paulina (the only other
similar species in both size and colour pattern in SE NSW and which was
also present in the area), by the more rounded termen of the hindwing, lack of
obvious black markings in the apex of the forewing and larger size.
Two days later, on 3 Feb. 2004 at 1315 h (DST), a male C. pomona ‘dark
from’ was observed by the author flying rapidly (approx. 5 m/sec or 18
km/hr) in a westerly direction in degraded woodland/urban parkland, about
2.5 m above the ground, near the Macgregor Primary School (35°12’S,
149°00°E; 570 m a.s.l), Macgregor, 13 km NW of Canberra, ACT. The
specimen was in view for approximately 10 sec before it disappeared behind
residential houses. It flew in a constant direction and within a few metres of
my position, allowing reasonable examination of its identity. Distinguishing
features included: size (about the same size as male Heteronympha merope
(Fabricius), colour (fore and hind wings uniformly canary yellow) and
pattern (faint black edging along wing margins). The only other yellow
pierids in the ACT and adjacent areas of NSW, with which it could be
confused, are Eurema smilax (Donovan) and Æ. hecabe (Linnaeus), the
former of which regularly visits the region during migration. Both are
substantially smaller in size and have a less powerful flight than C. pomona.
Australian Entomologist, 2005, 32 (2) 87
Figs 2-5. Examples of both sexes of Appias paulina collected from Yowrie, 15 km
ENE of Cobargo, NSW, 24 Jan. 2004: (2) male upperside; (3) male underside; (4)
female upperside; (5) female underside. Scale bar = 20 mm.
Discussion
Appias paulina makes irregular and temporary extensions in range to
southeastern NSW and eastern and central Victoria and, rarely, Tasmania,
usually in summer (Smithers 1983); however, too few data are available to
draw firm conclusions on overall patterns of movement throughout the
species’ range (Dingle ef al. 1999). It is not listed for the ACT (Kitching er
al. 1978), although in the rainforest gully of the Australian National Botanic
Gardens both sexes, but especially males, were common for a brief period in
late January 1998 (M.F. Braby, unpublished data). Two seasons earlier I
recorded five adults flying west at Brown Mountain (1240 m a.s.l.) near
Nimmitabel, NSW, on 26 Jan. 1996 between 1410 and 1450 h (DST) (1 male,
1 female collected). The southern distributional limit of Drypetes deplanchei
(Euphorbiaceae), the primary larval food plant of A. paulina, lies in rainforest
remnants in central coastal NSW (Hunter River valley near Newcastle) and
this region is believed to be the southern breeding limit of the butterfly
(Atkins 1992, Braby 2000). It is not certain, however, if A. paulina breeds
88 Australian Entomologist, 2005, 32 (2)
permanently or only temporarily (seasonally) in the Hunter River valley.
Occurrences of A. paulina outside the breeding range south of Newcastle are
believed to be the result of southward migration, but few details have been
documented (Smithers 1983, Dingle et al. 1999). Appearances in the southern
temperate areas are usually of short duration, although in some years the
species may be relatively abundant (Smithers 1983, Atkins 1992).
Despite the fact that Catopsilia pomona has the common name ‘Lemon
Migrant’, records of migration of this species are remarkably few (Dingle et
al. 1999) and in far southeastern Australia the species appears to be a rare
visitor (Common and Waterhouse 1981, Smithers 1983), especially in the
more temperate areas south of about Sydney, where the species does not
breed (Waterhouse 1932). In the 1991-92 summer season, when C. pomona
and several other species of butterflies were recorded migrating south in
central coastal NSW (Atkins 1992), it was collected at Wombarra, about 50
km SSW of Sydney, NSW (1 female ‘pale form’ collected 20 Feb. 1992 by F.
Douglas, pers. comm.) and at Wamboin, about 7 km NW of Bungendore,
NSW (1 male collected 7 Jan. 1992 by J. Armstrong, pers. comm.). It has not
previously been recorded in the ACT (Kitching et al. 1978), but it has been
sighted intermittently farther west in western and northwestern Victoria
(Braby 2000) and once in South Australia, at Berri in 1935 (Fisher 1978).
Most of these southern records occur in January and February when the
species makes temporary extensions in range during migration, often
coinciding with major southern invasions of A. paulina (Smithers 1983). The
southern breeding limit has not been established with certainty, but Atkins
(1992) noted that it breeds temporarily during the warmer months in central
coastal NSW (Newcastle district). Permanent breeding populations are
probably established much further north, possibly near the tropics.
The opportunistic observations made on A. paulina in southeastern NSW and
the ACT during the 2003-04 flight season, together with those made on
directional flights at Yowrie and Bega, suggest that a southern migration,
resulting in temporary range extension of the species, occurred over at least a
three week period between late January and mid February 2004. The two
observations made on C. pomona in the same general area in early February
2004 coincided with this southern migration of A. paulina. More
significantly, the observations made on these two species in the temperate
areas of southeastern Australia coincided with the period when A. paulina
and C. pomona were observed migrating in large numbers in southeastern
Qld and northeastern NSW, as well as their sudden appearance in coastal
areas and the southern tablelands of NSW during January and February 2004
(Fig. 1). Since the general movements throughout southeastern Australia
were in a southern direction, particularly in A. paulina, it seems likely that
the butterflies observed in southeastern NSW and the ACT were part of the
same overall mass flight noted further north in January-February 2004.
Australian Entomologist, 2005, 32 (2) 89
Directional (southern) movements of A. paulina were recorded only in the
coastal lowland areas of NSW, whereas the few specimens observed (of both
species) in the ACT and nearby areas of Tallaganda State Forest (on the
Great Dividing Range), NSW, were either flying west or not flying in any
particular direction, particularly when feeding from flowers. On the southern
tablelands at Bowral, NSW, the flight of A. paulina and C. pomona was also
non-directional, with much time devoted to searching for and feeding from
flowers (S.S. Brown, pers. comm.). This suggests that, in the higher latitudes
south of Newcastle, part of the migration dispersed inland west of the Great
Escarpment and Great Dividing Range. In this context it is notable that the
individuals of A. paulina I observed eight seasons earlier, in late January
1996 in the uplands at Brown Mountain (40 km SW of Yowrie), NSW, a
short distance inland of the Great Escarpment, were all flying west.
Bega, the southernmost record made for migrating 4. paulina, is a coastal
locality 35 km S of Yowrie, NSW and approximately 1200 km SSW of
Pomona, Qld (the northernmost locality where migration was recorded). If
the butterflies observed in coastal southeastern NSW at Bega and Yowrie
were indeed part of the same general mass movement in southeastern Qld,
then they must have travelled well over 1200 km. The source of the migration
is not known but was probably further north, possibly in the dry rainforests of
central coastal Qld near the vicinity of the Tropic of Capricorn (R.P. Mayo
pers. comm.). If so, then some individuals may have travelled up to 1500 km,
although it is possible that adults originating in northeastern NSW may have
also joined the migration.
Taking an average of the two speeds estimated at Yowrie and Bega, a
conservative estimate of the average velocity of A. paulina is 18 km/hr. If it
is assumed that adults maintain this speed for at least half the day (i.e. for
about six hours, with the remainder of the day devoted to resting, refuelling at
nectar sources, puddling, etc)', then the average minimum distance travelled
per day extrapolates to 108 km. At this speed, the distance between the
Pomona district, Qld, and Yowrie-Bega, NSW, would be accomplished in a
maximum of 11 days. The time difference may well be much shorter than
this, particularly if butterflies vary their speed and/or temporal duration of
flight, both of which may depend on environmental factors such as
temperature and available sunshine. Nevertheless, a time lag of around 11
days between the two geographical areas would readily account for the
appearance of A. paulina in southeastern NSW and the ACT during the same
months when the species was also noted migrating by several observers in
southeastern Qld and northeastern NSW.
lIn SE Qld during January 2004, R.P. Mayo (pers. comm.) estimated that 4. paulina
adults were migrating mainly from 1000-1500 h (EST), with reduced activity
(puddling) during the heat of the day between 1200-1300 h.
90 Australian Entomologist, 2005, 32 (2)
The factors contributing to such movement patterns among Australian pierids
have not been investigated, although climatic variables are suspected (Atkins
1992, Dingle er al. 1999). All observations in January-February were made
during calm weather, so wind is not considered to be a likely factor. The
mass migration in southeastern Queensland in early 2004 coincided with
above average rainfall (1.7 fold increase) for January (279 mm compared
with the monthly average of 159 mm for Brisbane) (Fig. 6b). Moreover,
central coastal Qld (near the Tropic of Capricorn) experienced well above
average rainfall (2.7 fold increase) three months earlier, in October 2003 (121
mm compared with the monthly average of 45 mm for Rockhampton),
following a prolonged dry period (7 months) when the monthly rainfall was
consistently below average (Fig. 6a). In contrast, rainfall for the same period
was close to or, more frequently, below average for Brisbane and the wet
season did not commence until December 2003 (Fig. 6b).
Many of the species noted migrating in southeastern Qld during January-
February 2004 are associated with plants in disturbed areas or dry rainforest
habitats and some are characterised by ‘boom-bust’ life cycles, in that
populations build up rapidly only when conditions are seasonally favourable
(see review chapters in Kitching ef al. 1999). At least one species (C.
pomona) breeds seasonally during the wet season and completes its life cycle
rapidly, within 2-3 weeks (Rienks 1985, Jones ef al. 1987). Assuming that the
source of the migration was near the vicinity of Tropic of Capricorn, one
scenario is that a significant rainfall event in October created conditions that
triggered breeding and then migration several weeks later. The above average
rainfall recorded in southeastern Qld three months later, in January 2004,
may in turn have facilitated dispersal southwards and subsequent breeding
within that region. Such an hypothesis is consistent with field observations, at
least for C. pomona where adults were first noted migrating in southeastern
Qld in late October-November 2003 and then were more abundant in
January-February 2004 (A.F. Atkins and R.P. Mayo, pers. comms).
No return (northern) flights of A. paulina and C. pomona have been recorded
in southeastern NSW, the ACT or eastern Victoria. Dingle et al. (1999)
pointed out that, in species which are characterised by such unidirectional
migrations into non-breeding areas, this will result in the loss of migrant
genes from the population, raising interesting biological questions regarding
the adaptive significance of such unidirectional (suicidal) flights. One theory,
proposed by Dingle ef al. (1999), is that such losses may be sustainable
provided there is genetic variation in migrating capacity, such that a
proportion of individuals (the short distance migrants) produce many
offspring in suitable habitats before dispersing completely out of the breeding
range (e.g. northeastern NSW in the case of the two pierid species). Adults
from this next generation then gradually disperse back to the original source,
but in substantially lower numbers.
Australian Entomologist, 2005, 32 (2) 91
Rainfall (mm)
Rainfall (mm)
400
(a) Rockhampton
300
100
JFMAMJJASOND JFM
2003 2004
400
(b) Brisbane
300
200
100
JFMAMJJAS ON DJFM
2003 2004
Month
Fig. 6. Monthly rainfall data for the period January 2003-March 2004 for: (a) central
coastal Queensland (Rockhampton) and (b) southeastern Queensland (Brisbane).
Dashed line represents average monthly rainfall for each locality. Vertical arrow in (a)
indicates start of the wet season with a significant rainfall event in October for
Rockhampton following a 7 month dry spell. Horizontal arrow in (b) indicates major
period when Appias paulina, Catopsilia pomona and many other butterflies were
recorded migrating south en masse in SE Qld.
92 Australian Entomologist, 2005, 32 (2)
Acknowledgements
I thank Penny Greenslade and a reviewer for comments on the manuscript
and A.F. Atkins, S.S. Brown, R.P. Mayo, C.G. Miller, A. Sundholm, R. Chin,
J. Armstrong and F. Douglas for providing their detailed observations on
migration and/or southern distribution records. C.E. Meyer, J. Armstrong, G.
Guy, S. Caton and L.J. Aitchison kindly assisted with field work.
References
ATKINS, A.F. 1992. Migrating Lepidoptera in January, 1992, on the central coast of New South
Wales. Victorian Entomologist 22: 41.
BRABY, M.F. 2000. Butterflies of Australia: their identification, biology and distribution. 2
vols. CSIRO Publishing, Melbourne; xx + 976 pp.
BROWN, S.S. 2004. A range extension for Protographium leosthenes leosthenes (Doubleday)
(Lepidopera: Papilionidae) in southern Australia. Australian Entomologist 31(3): 110.
COMMON, LF.B. and WATERHOUSE, D.F. 1981. Butterflies of Australia. Revised edition,
Angus and Robertson, Sydney; xiv + 682 pp.
DINGLE, H., ZALUCKI, M.P. and ROCHESTER, W.A. 1999. Season-specific directional
movement in migratory Australian butterflies. Australian Journal of Entomology 38: 323-329.
FISHER, R.H. 1978. Butterflies of South Australia. Government Printer, Adelaide; 272 pp.
GREENSLADE, P.G., FARROW, R.A. and SMITH, J.M.B. 1999. Long distance migration of
insects to a subantarctic island. Journal of Biogeography 26: 1161-1167.
JONES, R.E. 1987. Reproductive strategies for the seasonal tropics. Insect Science and
Application 8: 515-521.
JONES, R.E., RIENKS, J., WILSON, L., LOKKERS, C. and CHURCHILL, T. 1987.
Temperature, development and survival in monophagous and polyphagous tropical pierid
butterflies. Australian Journal of Zoology 35: 235-246.
KITCHING, R.L., EDWARDS, E.D., FERGUSON, D., FLETCHER, M.B. and WALKER, J.M.
1978. The butterflies of the Australian Capital Territory. Journal of the Australian
Entomological Society 17: 125-133.
KITCHING, R.L., SCHEERMEYER, E., JONES, R.E. and PIERCE, N.E. 1999. The biology of
Australian butterflies. Monographs on Australian Lepidoptera. Volume 6. CSIRO Publishing,
Melbourne; xvi + 395 pp.
MAYO, R.P. 2004. Interesting distribution records of butterflies in south east Queensland. News
Bulletin of the Entomological Society of Queensland 32 (3): 64-65.
QUICK, W.N.B. 1974. Some abnormal insect records for the summers of 1972-3, 1973-4.
Victorian Entomologist 4: 66-71.
RIENKS, J.H. 1985. Phenotypic response to photoperiod and temperature in a tropical pierid
butterfly. Australian Journal of Zoology 33: 837-847.
ROBINSON, M. 2004. [No title]. Butterfly and Other Invertebrates Club Newsletter 32: 20.
SMITHERS, C.N. 1983. Migration records in Australia. 4. Pieridae (Lepidoptera) other than
Anaphaeis java teutonia (F.). Australian Entomological Magazine 10: 47-54.
WATERHOUSE, G.A. 1932. What butterfly is that? Angus and Robertson, Sydney; 291 pp.
Australian Entomologist, 2005, 32 (2): 93-95 93
ADDITIONAL NOTES ON THE LIFE HISTORY OF
OPODIPHTHERA FERVIDA (JORDAN)
(LEPIDOPTERA: SATURNIIDAE)
D.A. LANE
3 Janda Street, Atherton, Old 4883 `
Abstract
The egg and early instar larvae of Opodiphthera fervida (Jordan) are described and figured.
Introduction
Opodiphthera fervida (Jordan) occurs in rainforest between Mossman and
Paluma in northeastern Queensland (Common 1990). Adults first appear in
October after summer storms and have been collected until May, suggesting
at least two broods. Adults readily come to light, with males encountered
more frequently than females. Larvae are regularly found during summer
months, particularly at higher altitudes on the Atherton Tablelands (900-1200
m). At Atherton during December and January, development times were:
eggs six days; first to final instar larva 24-30 days; adults emerging from
pupae after 15-25 days. Some pupae go into diapause, with adults emerging
the following season. From reared specimens, the ratio of males to females is
approximately 3:2. The final instar larva has been briefly described, aspects
of its biology discussed and comparisons made with the closely related O.
astrophela (Walker) by Lane (1994). This paper presents further notes,
descriptions and illustrations of the egg and larval instars.
Life history notes
Foodplants. Maesa muelleri Mez and Rapanea porosa (F. Muell.) Mez
(Myrsinaceae).
Egg (Fig. 1). Flat type, ovoid in shape, approximately 1 mm x 0.8 mm; light
brown in colour. The eggs are laid either in a straight or curved line of 3-20
on the underside of foodplant leaves, or occasionally in a linear pyramid
formation (totalling 60-80 eggs) up to 10 rows high on the foodplant stems.
This behaviour of laying eggs in a pyramid formation is unique in the
Australian Saturniinae, but has been reported in the domesticated Asian
Attacine species Samia ricini (Donovan) (Peigler and Wang 1996).
First instar larva (Fig. 2). Length 5-7 mm. Head, body and legs light brown.
Each segment carries small slightly raised scoli, coloured light yellow, that
bear very fine, short setae. Larvae feed gregariously on juvenile foliage, in
groups of several up to forty, resting and feeding on the undersides of leaves.
Second instar larva (Fig. 3). Length 7-18 mm. Head, body and legs black.
Raised scoli black, proportionately larger than those of first instar larva.
Numerous very fine white setae arise from scoli. Larvae still feed in
gregarious clusters, but begin to disperse in smaller groups around the
foodplant.
94 Australian Entomologist, 2005, 32 (2)
7
Figs 1-7. Early stages of Opodiphthera fervida. (1) egg batches; (2) first instar larvae;
(3) second instar larvae; (4-5) third instar larvae; (6-7) fifth instar larva.
Australian Entomologist, 2005, 32 (2) 95
Third instar larva (Figs 4-5). Length 18-50 mm. Head and thoracic legs dark
brown; body and prolegs jet black. Raised scoli are reddish orange on
thoracic segments, changing to orange on abdominal segments. Long white
setae extend from scoli. Shorter white setae arise from prolegs. Spiracles
distinctly white. A yellow lateral line connects orange scoli below spiracles.
Larvae disperse around the foodplant and feed singly.
Fourth instar larva. Length 50-75 mm. Similar to fifth instar but not as
stocky.
Fifth instar larva (Figs 6-7). Length 75-90 mm. Head, body and prolegs jet
black; thoracic legs reddish. Scoli are bright reddish on thoracic segments,
changing to orange with red tips on abdominal segments. All scoli adorned
with long white setae. Spiracles white. A yellow lateral line connects orange
scoli below spiracles. Prolegs adorned with shorter white setae.
Pupation. Larvae leave the foodplants to pupate and may wander
considerable distances to find a suitable pupation site. In the wild, wandering
larvae were observed more than 15 metres away from their foodplant trees,
both moving across foliage and on the ground. It is unclear exactly where
larvae pupate in the wild, as wild pupae have not been located. In captivity,
just prior to pupating, mature larvae always move to the base of containers, or
to the base of sleeves placed on foodplants, and push their way into crevices,
fallen leaves or debris, where they pupate singly or in clusters, with
surrounding leaves or debris wrapped around the pupal cocoons. Cocoons are
dark brown in colour, with the silk walls relatively thin, giving the cocoon
minor rigidity and stiffness, but not as stiff and rigid as Opodiphthera
eucalypti (Scott) (Common 1990).
Acknowledgements
Thanks are extended to Garry Sankowsky for help with photography, to
Queensland Parks and Wildlife Service for scientific permits allowing
research within National Parks and State Forest areas under their jurisdiction,
and also to Mr John Olive of Cairns, who generously donated a batch of
mature larvae found at Upper Barron.
References
COMMON, LF.B. 1990. Moths of Australia. Melbourne University Press, Carlton; xxxii + 535
pp.
LANE, D.A. 1994. Notes on the life history of Opodiphthera fervida (Jordan) (Lepidoptera:
Saturniidae). Australian Entomologist 21: 37-38.
PEIGLER, R.S. and WANG, H.Y. 1996. Saturniid moths of southeastern Asia. The Taiwan
Museum, Taipei; xii + 262 pp.
96 Australian Entomologist, 2005, 32 (2)
BOOK REVIEW
The complete field guide to butterflies of Australia. By M. F. Braby. CSIRO
Publishing, Collingwood, Victoria; October 2004; x + 340 pp; paperback. ISBN 0 643
09027 4. Price A$39.95.
This handy book is intended as a field version of Michael Braby’s 2 volume opus,
‘Butterflies of Australia: their identification, biology and distribution’, published by
CSIRO in 2000. As such, it focuses on colour illustrations of all species, the facing
text mainly devoted to notes on behaviour, habitat and larval food plants, features
most useful to field collectors. However, it does stand alone as a useful reference
work on Australian butterflies and in some cases updates the previous work.
The number of butterfly species now recognised within Australian limits has
increased from 414 in ‘Butterflies of Australia’ to 416 in the present work, with two
deletions [plus the continued non-recognition of Elodina tongura Tindale], two
additional species recognised from mainland Australia and two additional species
recorded from Christmas Island. However, since going to press several further
discoveries have been made, including Acrodipsas decima Miller & Lane from the
Northern Territory and several newly recorded species from the islands of Torres
Strait, so the list continues to increase.
As in ‘Butterflies of Australia’, the mandatory rule of the International Code of
Zoological Nomenclature concerning gender agreement in specific names has been
disregarded; thus another opportunity to correct this indiscretion has been lost. The
trend towards ‘original spellings’ is only useful in Europe, where generic placement
of butterfly species varies from country to country. Generic placement in Australia is
generally stable and books published by CSIRO should, instead of following ‘trends’,
follow the rules of the Code and set a good and proper example to the next generation
of enthusiasts. In the field guide a greater emphasis has been placed on common
names, with author citations for species relegated to the accompanying checklist near
the back of the book. This is also unfortunate, since common names are not
universally recognised and have no standing under the Code.
The text appears relatively free of typographical errors. A cursory read only produced
two - Deudorix ‘smiles’ [smilis] on p. 26 and Dusky ‘Night’ [Knight] on p. 151. On p.
25, ‘less’ is used inappropriately in place of ‘fewer’ when dealing with numbers. The
photograph on p. 9 appears to be upside down. One of the studies used to support
recognition (p. 24) of Ornithoptera euphorion (Gray) as a distinct species [Morinaka
et al. 2000] did not use any Australian material and is inappropriately quoted.
The above criticisms are not intended to detract from the overall quality and
usefulness of this fine book. The illustrations are superb and, together with the
accompanying text and maps, should enable identification of even the most difficult
of species. It is highly recommended, particularly for those who enjoy watching or
collecting butterflies in the field or have not lashed out on the more lavish ‘Butterflies
of Australia’.
David L. Hancock
Cairns
ENTOMOLOGICAL NOTICES
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NOTES FOR AUTHORS
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comply with the mandatory provisions of the International Code of
Zoological Nomenclature.
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Address manuscripts to: The Editor
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Printed by ColourWise Reproductions, 300 Ann Street, Brisbane, 4000.
THE AUSTRALIAN
Entomologist
Volume 32, Part 2, 29 June 2005
KKK
CONTENTS
BRABY, M.F.
Migration of two species of Pieridae (Lepidoptera: Papilionoidea) in
southeastern Australia.
HANCOCK, D.L.
A note on three unusual species of Phytalmiinae (Diptera: Tephritidae)
from Papua New Guinea.
HUMPHREYS, G.S.
Variation in population density of cicadas (Hemiptera: Cicadidae) in
the Sydney region: Psaltoda moerens (Germar), Thopha saccata
(Fabricius) and the ‘spreta’ form of Cyclochila australasiae (Donovan).
LAMBKIN, T.A. AND KNIGHT, A.I.
New Australian butterfly records (Lepidoptera) from Saibai and Dauan Islands,
Torres Strait, Queensland.
LANE, D.A.
Additional notes on the life history of Opodiphthera fervida (Jordan)
(Lepidoptera: Saturniidae).
LANE, D.A. AND EDWARDS, E.D.
The status of Opodiphthera carnea (Sonthonnax) and Opodiphthera loranthi
(Lucas) (Lepidoptera: Saturniidae) in northern and eastern Australia.
MAKINSON, J.R., GOOLSBY, J.A., MEYERDIRK, D.E., KIRK, A.A. AND BURWELL, CJ.
A new record and host association for the pigeonpea pod fly, Melanagromyza obtusa (Malloch)
(Diptera: Agromyzidae) and notes on its parasitoids in the Northern Territory, Australia. 79
MISCELLANEOUS NOTES
BOOK REVIEW
The complete field guide to butterflies of Australia. M.F. Braby
a
ISSN 1320 6133