Table Of ContentMemoirsofMuseum Victoria 57(2): 237-239 (1999)
A SECOND SPECIES OF ATRIPLECTIDES MOSELY FROM AUSTRALIA
(TRICHOPTERA: ATRIPLECTIDIDAE)
Arturs Neboiss
Entomology, Museum Victoria, 71 VictoriaCrescent, Abbotsford, Victoria 3067. Australia
Abstract
Neboiss, A., 1999. A second species ofAtriplectides Mosely from Australia (Trichoptera:
Atriplectididae). Memoirs ofMuseum Victoria 57: 237-239.
Atriplectides ikmaleus sp. nov. is described from the North Queensland Wet Tropics Her-
itage Area. Its adult and larval features are comparedwith those ofseveral recently described
neotropical atriplectididines.
Introduction Atriplectides ikmaleus sp. nov.
Investigation ofthe North QueenslandWetTrop- Figures 1—4
ircesveHaelreidtagmeanAyreaun(dWeaslckriebredet satp.e,ci1e9s93;of19T9r5i)- MUaptpcehredMeuxlagmrianveed. rHiovleortyvpieamaGloer.dNoonrvtalheQ,uee1n7s°l1a0n'dS,,
choptera which were given code-numbers pend- 145°53'E (Wet Tropics Investigation area 5),
ing formal species description. This material 29-30.iv.1970, S.R. Curtis, ANIC (genitalic prep. PT-
included a small number of specimens of 2010, illustrated).
Atriplectides dubius Mosely from several local- Paratype male, North Queensland, YuccabineCreek,
ities, as well as an undescribed Atriplectides Kirrama State Forest, 18°12'S 145°54'E (We&t
speActireispl(ecctoiddee-snumdbuebriuPsT,-201hi0t)h.erto the only TL,roBpeincssonI,nveNsMtiVgatTio1n72a6r3ea(g9)e,nitxailii.c19p8r5e.p.R.PTP-e1a5r8s8o)n.
Australian atriplectidid species known, is widely Diagnosis. Forewing length 15.2-15.4 mm,
distributedandhasbeencollected from numerous slightly larger than A. dubius. Forewing fork 1
localities. It was described from Tasmania and with footstalk short; cross-vein r-m at about dis-
subsequently found to be common throughout tal third of discoidal cell; a small cross-vein
eastern Victoria and New South Wales. It has between M1+2 andM3+4 abouthalfwaybetween
been recorded from Queensland as far north as arculus and wing margin; male genitalia with
the Mareeba district north ofCairns. It has been single-segmented inferior appendages.
taken on Kangaroo Island and in the Adelaide
Hills, South Australia, and from southwestern Description. Male. Wings (Fig. 4) fuscous with-
Western Australia. ThesingleWesternAustralian out mottling (both specimens preserved in alco-
specimen (Seldom Seen Brook, Jarradale, S. hol and faded, paratype male slightly teneral).
Bsmuanlnl,er4.txhi.an19t8h3e,aNveMraVgecoslpleecctiimoensn)sifsrmoamrgeiansatlelryn Fbrooraedwliyngsefsosrikle;1 wainthunsuhosrutalfooctrsotsasl-kv,efionrkbe2tlwoenegn,
Australiabutshowsno structural differences. The Ml+2 and M3+4 halfway between arculus and
newspeciesdiffers in wingandgenitalic features; wing margin; hind wing Sc joins Rl shortly
it oSvpeercliapmsentshewneorrethperrenpdairsetdribfuortioenxaomfi/nI.atdiuobniusb.y bveefinorceownniencgtsmatrogiRn2,+3a;nddiastctohiidsalpocienllteslmoanllgactreotsrsi--
clearingthe abdomens in cold KOFI solution. The angular. Antennae slender, scape short, distinctly
dissected and figured specimens are identified by bulbous; segment 2 very short, slightly thicker
the author's notebook number with the prefix than segment 3, subsequent segments long and
'PT-\ Material is deposited in the Australian slender. Maxillary palpi 5-segmented, first three
National Insect Collection, Canberra (ANIC) and segments more robust than distal segments,
Museum Victoria, Melbourne (NMV). elongate; segments 4 and 5 distinctly thinner.
237
238 ARTURS NEBOISS
vFeingautrieosn.1-4. Atriplectides ikmaleus sp. nov. 1-3, male genitalia, dorsal, ventral and lateral views'' 4' wino2
Figures 5, 6. Atriplectides sp. (presumably ikmaleus). 5, head and thorax, dorsal view; 6, larval case, dorsal
''
A SECOND SPECIES OF CADDIS FLY (ATRIPLECTIDIDAE) 23')
Genitalia (Figs 1-3). Abdominal segment IX The Atriplectididae were recently recorded
short, lateral margins slightly lobose; segment X from the Neotropics for the first time by Holzen-
with a deep V-shaped cleavage separating rather thal (1997) who erected a new genus, Neoa-
slender, triangular, distally tapered lobes. Supe- tripleetides, for a species from Peru, Bolivia and
rior appendages slightly shorter than segment X, Ecuador (N. froehliehi Holzenthal). Neoatriplee-
stout, rounded distally. Inferior appendages lides is characterised by the single-segmented
single-segmented, slightly compressed later- inferior appendages of the male, a feature also
ally, divergent distally, shorter than segment seen in the new Australian species. However, the
X. Phallus short, truncate, apically a distinct lip. wing venation of the Australian species differs
Female. Unknown. from that ofthe Neotropical genus.
Etymology.—Latinised from ikitialeos, (ireek -
damp, wet inreference to the wettropical envi- Acknowledgements
ronment ofthe North Queensland World Heritage
Area My sincere thanks are extended to MrJohn Dean,
Melbourne, for providing the informative details
Remarks. Atriplectides ikmaleus adults are known
of the larvae and giving permission to use his
from only the two North Queensland localities, illustrations, and to Dr Alice Wells, Canberra, for
150 km apart. The new species is distinguished continuous encouragement, discussions and help
from A. duhius by being larger (forewing in the preparation ofthis manuscript.
15.2 15.4 versus 12- 14 mm), wing venation and
the single-segmented inferior appendages of the
male genetalia. References
Two larval specimens are assigned to this
species, collected from the same general area as llol/cnthal, R.W., 1997. The caddisfly (Trichoptera)
family Atriplectididae in the Nootropics. Pp.
TtFhohereeyspta,arraxet.yf1ip9ge8u3r,(eYdRu.acncPdaebakirensyeoendC&roeuteLk.a,sBe'KnSisproercnai,measNMASVVt)at1.e p(1eo5ds7si)u1mP6r5ooncienTerdHiiocnlhgzoespntteahrfaal.t,heORh.<isWvo/.; BIianontldeorgniHacitanilto.nSauOl.rSvS.eyymJ-r:
in the 'Preliminary keys Alripleeticliilae, ete. t'olombus, Ohio. USA.
by John Dean (in litt.). The sand-grain case (Fig. Marlier, Ci.. 1978. Lcs larves et nyuiphes des Triehop-
6) is broad, dorsoventrally flattened with larger teres des Seychelles. Pp. 31 54 in ( richton. M.I.
ballast particles attached along the lateral mar- (ed) Proceedings of the 2nd International Sym-
gins. The larva (Fig. 5) is distinguished from that posium on Trichoptera. Dr W. Junk Publishers:
The Hague.
ofA. ditbius (Neboiss, 1978) by the presence of Neboiss. A., 1978". Atriplectididae. a new caddislly
five sclerites on the anterior halfofthe pronotum; family (Trichoptera: Atriplectididae). Pp. 67 73 in
and the hind tarsal claw less than halfthe length Crichton, I.M. (ed.) Proceedings ofthe 2nd Inter-
ofthe tarsus. The numberand position ofthe gills national Symposium on Trichoptera. Dr W. Junk
resemble the arrangement in an unidentified Publishers: The Hague.
Brazilian atriplectidid larva described and figured Walker, K., Neboiss, A., Dean, J. and Cartwright, D.,
by Holzenthal (1997) as does also the curiously 1993. A Preliminary Investigation of the Caddis-
elongate arrangement of the pronotum, strength- flies (Trichoptera: Insecla) ofthe Queensland Wet
ened by additional sclerites. A similarprothoracic I'roiiies World Heritage Area. Museum of
Victoria, Department of Entomology: Melbourne.
arrangement was described by Marlier 1978: 43)
( 177 pp.
in an ondontocerid larva, Hughscottiella auri- Walker. K... Neboiss, A., Dean, .1. & Cartwright, D.,
capilla Ulmer, from the Seychelles. This larva 1995. A preliminary investigation of the caddis-
differs, however, in having strongly enlarged flies (Trichoptera: Insecta) of the Queensland
midlegs and its species was transferred to Wet Tropics. Australian Entomologist 22: 19 31
Atriplectididae by Neboiss 1978: 67). [Summary ofthe 1993 report].
(
