A new genus and species of the clearwing moth tribe Osminiini from the Oriental Region (Lepidoptera, Sesiidae)

6 Pages·1995·0.69 MB·

TThhee LLeepipdiopdteorpoltoegircaollSoocgieitycal Society ooff JJaapapnan
ueLma 7hans. Iepid.Soc.Ilipa4n6(1):17-22,March 1995

A the tribeOsminiini from the
new genus and species of clearwing moth
Oriental Region (LepidopteSreasi,idae)

Oleg G. GoRBuNovi) and Yutaka ARiTA2)
1) Institute for the Problems of Ecology & Evolution, Russian Academy of Sciences ,Leninsky
33,Moscow ll7071,Russia'
prospect
2) Zoelogica] laboratory, Faculty of Agriculture, Meijo Universit yT,ernpaku-ku, Nagoya, 468 Japan
Abstract A new genus and species, Ahaisphecr 'maelanQPuncta gen. et sp. n., tribe Osminiini,
is described and figured from Vietnam. A key to genera of the Osminiini of the Oriental
Region is presented.
Key words Sesiidae, Osminiini, Afeaisphecia melanQPuncta gen. et sp. n., taxonomy, Oriental
Region,Vietnam.

A small collection of clearwing rnoths from Southest Asia belonging to the Museum
d'Histoir eNaturelle Geneve, Switzerland (MHNG), turned out to contain three speci--
mens of one species habituall yvery similar to species of the genus Hbterosphecia Le Cerf,
1916, but having some important difference s.Here we describ iet as a new genus and
AhaZsphecia
species, melanQPerncla gen. et sp. n.
Although the fauna of clearwing moths of the Orienta Rlegion is at present one of the
least known, certainly comprising numerous new synonyms both at the species and genus
levels w,e still dare describ ea new genus. One of the reasons for this is based on the fact
that a restudy of the type species of the genera of the trib eOsminiini from the 0riental
Region has been finishe d.All of them have been figure din our article (Arit a&
Gorbunov,1995).

Akaisphecia Gorbunov et Arita ,gen. n.
Type Akatsphecta Gorbunov Arita,
species : nzelanopuncta et sp, n,
Medium-sized 26.0-27.5mm, intensively
clearwing moths with alar expanse with red-
orange or red coloration of thorax, legs ,abdomen and wings (Fig. 1)H.ead with
in
antenna relatively strongly clavate, without cilia male ; proboscis well-developed ;
maximum width of head less than that of prothorax. Distall y8th tergite of abdomen
double, filiform, long hair-like (Figs1,4). Hind
with spiralling, very appendix of scales
tibia and tarsus entirely tufted with long hair-lik escales, their total length somewhat
longer than that of abdomen, Forewing (Fig 2.) with vein R, missing (conflue nwitth
R, ?) ,other veins separated ; tip of R-stem reaching midway between bases of veins R,-
R3;anterior transparent area of forewing with a large, mat black, rounded spot
medially. Hindwing (Fig 2,) with vein Cui arising from sornewhat before lower angle of
cell, veins At and A2 well-developed, Male genitalia with tegumen-uncus complex
(Figs3a-b) densely hair-like
narrow and small ; uncus covered with scales; gnathos
densely longhair-like
undeveloped ; valva narrow quadrangular, covered with scales on
dista lhalf ,without crista sacculi (Figs3a,c )s;aceus relatively broad and long, flat
basally ; vinculum narrow, about 1.5 times as long as saccus ; aedeagus (Fig 3.d) relative-
ly broad, about 1.5times as long as length of valva;vesica with small, numerous,
* Visiting Schelar of Zoologica lLaboratory, Faculty of Agriculture ,Meijo University,
Tempaku-ku, Nagoya, 468,Japan

NII-Electronic Library Service
TThhee LLeepipdiopdteorpoltoegircaollSoocgieitycal Society ooff JJaapapnan
18 Oleg G. GoRBuNov and Yutaka ARITA
Fig, 1. Aleaisphec imaetanqPuncta gen. et sp. n. Holotype, male (MHNG), alar expanse
27.5 mm.
rounded cornuti.
Diagnosis . This new genus is closely related to llbterosphec iLae Cerf ,1916 and
Melanosphecia Le Cerf, 1916, but differ sfrom them in the intensivel ryed-orange colora-
tion, presence of a double, spiralling, filifor mappendix on the 8th tergite of the abdomen,
and a large ,rounded, black spot on the anterior transparent area medially of the
forewing, Besides that ,Ahaispheci agen. n. can be easily separated from those genera by
the rather robust thorax (maximum width of head less than that of prothorax, but in the
genera compared width of head more than that of prothorax), and in the structure of the
hair-lik etuft of the hind leg (tib ienatirely and two basa lsegments of tarsus with a hair-
like tuft in Hlrterosphec ind,ista lhalf of tibia and two basal segments of tarsus in
Melanosphecia) .Fore- and hindwings of the new genus are rather broader than those in
Hbterospheci aand Melanosphecia ,but venation has in fact no significant difference so,nly
the tip of the R-stem of the forewing reaching about midway between the bases of veins
R2-R3 (t obase of vein R2 in Higterosphecl a)F,rom AschistQphle pHsampson, [1893 t]h,is
new genus is distinguishab lbey the robust body, presence of a filifor mappendix on the
8th tergite of the abdomen, and structure of the hair--li kteuft of the hind leg (dist haallf
of tibia and firs ttarsal segment tufted in Aschtstophlop s; )besides that, AschistqPhleP hsas
relatively long hind tibia and tarsus.
All the known genera of the tribe Osminiini ,includin gthe new one, of the Orienta lRegion
can be determinated by the following key :
1. Maximum width of head less than maximum width of prothorax ; both hind tibia
and tarsus entirely tufted with hair-lik escales ; 8th tergite ef abdomen in male
with a double, spiralling, filifer mappendix of very long hair-lik escales (Fig s1,
4) ; anterior transparent area of forewing with a large rounded spot medially
................･....,,............,...･･･-..,,.............Aleaisphecia
gen. n.
- Maximum width of head more than maximum width of prothorax ; three apieal
segments of hind tarsus not tufted with hair-lik escales ; 8th tergite of abdomen
without any appendix (Fi g5.); anterior transparent area of forewing ,if present,
NII-Electronic Library Service
TThhee LLeepipdiopdteorpoltoegircaollSoocgieitycal Society ooff JJaapapnan
A New Genus and Species of Osminiin iCSesiidae) 19
1
x
Fig. 2 . Wing venatien of Akaispheci amelanopuncta gen. et sp. n. Scale bar: 2.0mm.
without spot medially ........,,,..,,.....,...,.,...,..........,..............2
2. Forewing entirely opaque, often with strong, metallic sheen ; scales of hindwing
with strong, metallic sheen .,,...,.,.....................Melanosphecia Le Cerf
- Forewing with transparen tareas; fore- and hindwings without metallic sheen ..3
3. Hind tibia and tarsus about twice as long as abdomen; only apical half of hind
tibia and firs tbasal segment of tarsus tufted with hair-like scales
....,.,...,............................,.,...,...,....AschistQphleps Hampson
-
Hind tibia and tarsus only slightly longer than abdomen ; hind tibia entirely and
only two basal segments of tarsus tufted with hair-lik escales
.........................,.........................･･.....HbterosPhecia Le Cerf
Etymology, The name of this new genus AkaisPheci apartly derives from two closely
related genera, lleterosphec ianad Melanosphecia .The name "akai" is derived from the
Japanes eword meaning red, and corresponding to the ground coloration of the type
Gender isfeminine.
species.
Akaisphecia melanopuncta Gorbunov et Arita, sp. n. (Fig s1-4)
Description .Male (holotyp e()Fi g1.) . Alar expanse 27.5 mm ; body length 13.5 mm ;
forewing 12.5mm; 8.4mm, Head: black
antenna antenna with a small yellowish-
sandy spot externally near apex ; frons grey-brown with violet sheen ; vertex black with
greenish sheen ; Iabia lpalpus black with a narrow, pale yellow to white stripe extro-
Iaterall y;pericephalic hairs red-orange. Thorax: patagium black with bluish sheen,
with a few red-orange scales ; tegula red-orange with a mixture of black scales at inner
margin distall y; mesothorax black with bluish sheen, mixed with red-orange scales,
especially caudally; metathorax red-orange te red; thorax laterally dark grey with
strong violet sheen. Legs:fore coxa black with a mixture of individual red-orange
scales basally; hind tibia and tarsus entirely and strongly tufted with hair-lik escales,
red-orange to red with a few black scales basall y; spurs white. Abdomen : dorsally
red-orange to red ; tergite 1 black with violet sheen ; tergites 3 and 4 each with a large
medial spot black with violet sheen (th sepot on third tergit elarger ); tergite 8 black with
two, very long, nearly as long as abdomen, black, spiralling threads of hair-lik escales
(Fig s1, 4) ; ventrally sternite 1+2 dark grey with violet sheen, all other sternites red-
orange ; anal tuft undeveloped, Forewing : basally black ; costal and anal margins red-
orange with a mixture of individua lbrownish scales; Cu-stem basally red-orange,
distall ybrownis h; disca lspot and veins within external transparent area mat black ;
NII-Electronic Library Service
TThhee LLeepipdiopdteorpoltoegircaollSoocgieitycal Society ooff JJaapapnan
20 Oleg G. GoRBuNov and Yutaka ARITA
Fig.3. MalegenitaliaofAkaisPheciameinnopunctagen.etsp.n. GenitalpreparationNo.

GA-O07 (MIING). Common b.Tegumen-uncus lat-
a. view, unpressed. complex,
era! view. c. Valva, pressed. d. Aedeagus. Scale bar: O.5mm.
apical area undeveloped; transparent areas well-developed; anterior and posterior
transparent areas densel ycovered with brownish semihyaline scales ; beside sthat, first
one with a large ,rounded, mat black spot nearly level to disca lspot of hindwing;
external transparent area extremely large ,divide dinto 6 cells, in proximal half densely
covered with blackish to brown, slightly hyaline scales and with a narrow, longitudinal,
black stripe between veins R3-Cui ; cilia black. Hindwing: transparent but covered
with red-orange scales basally to disca lspot and in anal part, and with black scales
distally discal indistalhalfblack,inbasalhalf discal
of spot; veins red-orange; spot
black black.
and outer margin narrowly ; cilia
Genital i(aFi g3.) (genit parleparation No. GA-O07) .Tegumen-uncus complex (Fig 3sa,
b) small and narrow ; uncus entirely covered with rather short hair-like scales ; gnathos
undeveloped ; valva (Fig 3sa, c) quadrangular with a disto-dorsa langle slightly turned-
densely longhair-like distahlalf broad
up, covered with scales on ; saccus relatively and
long with a fla tbase;vinculum narrow, about twice as long as saccus (Fig.3a);
aedeagus (Fi g3.d) relatively narrow, about 1.5 times as long as valva ; vesica with small,
numerous, rounded cornuti.
Female. Unknown,

NII-Electronic Library Service
TThhee LLeepipdiopdteorpoltoegircaollSoocgieitycal Society ooff JJaapapnan
A New Genus and Species of Osminiin i(Sesiidae) 21

Fig. 4. Distal segments of abdomen of Ahaispheci amelanqPuncld gen. et sp. n. Male,
Genital Ne.GA-O07.
paratype. preparation
Fig.5. Dista lsegments of abdomen of lfeterosphecl asohanthovi (Gorbunov 1,9S8).Male,
Genital No.GA-O05 (MHNG).
preparation
Variability.Coloration individual
virtually constant, slightly variably only size: alar
expanse : 26.0-27. m5m ; body length 13.5-14, mOm ; forewing 11.5-12. m5m ; antenna 8,
4-9.0
mm.
Diagnosis . From all species of the genus HlaterosPhec itah,is new species differ sclearly
in the rather larger size and both broader fere- and hindwings ,in the intensively red-
orange to red coloration of the thorax, hind leg ,abdomen and wings, and, especially, in
the presence of a very long, spiralling, double thread of hair-lik escales on the 8th tergite
of the abdomen. From species of the genus Melanosphecia ,this new species differ sin
having transparent areas of the forewing, in the absence of strong metallie sheen on the
wings, as well as in the presence of a long, double, filifor mappendix on the 8th tergite
of the abdomen and structure of the hair-lik etuft of the hind Ieg (hair-l sickalees only
on apical half of tibi aand two basa lsegments of tarsus in Melanosphecia ).From all
MelittiaHttbner,[1819A]k,aisPhecia be
species of melanopuncta gen, et sp. n. can
distinguishe dby the generic characters, viz. structure of the antenna, both fore- and
hindwing venation and male genitalia ,and 8th tergal appendix.
Bionomics, The host plant is unknown. Type specimens were collected in April.
Habitat. Unknown.

Distribution.Vietnam,

Material examined. Holotype ,c7,Vietnam, Vang Lom, 11. IV. [19]5 0J,. Romieux leg.
(MHNG) ; 1 6n (paratyp seam)e, localit yand date as holotype ,J. Romieux leg .(collection
of O. Gorbunov, Moscow, Russia) ; 1 cl' (paratyp Vei)e,tnam, Sam Con a Vang Lom, 10.
IV, [19]50J,.Romieux leg.(genital No. GA-O07) (MHNG),
preparation
Etymology. This new species is named after a rather large ,mat black spot on the
anterior transparent area of the forewing.
Acknowledgements
We would like to express our cordial thanks to Prof. Dr C. M. Naumann (Zoologisches
Forschungsinstitut Museum Alexander Koenig,Bonn,Germany),Dr D,B.Burckhar-
und
dt(Museumd'HistoirNeaturelle,Geneve,Switzerland) Dr S,I.Golovatch(Institute
and
NII-Electronic Library Service
TThhee　 LLeepipdiopdteorpoltoegiroaollogical　 SSoooiceityety 　ooff　 JJaapapnan
22 01eg　G．　GoRBuNov 　and 　Yutaka　ARITA
for　the　Problems 　of　Ecology ＆ Evolution　Russian　Academy 　of　Sciences，　Moscow ，
，
Russia）for　their　help　in　our 　investigatio．　nWe 　are 　indebted　to　Dr　M ．　Owada （NatiQnal
Science　Museum （Natural　History）　Tokyo 　Japan）for　taking　pictures　of　the　abdomens
（Figs　4−5）．　 We 　also 　have　to　cordially， 　thank，　Dr　S．1．　Golovatch　one 　more 　for　his　linguistic
help，
References
Arita，　Y ．　and 　O ．　G．　Gorbunov ，1995．　 A　revision 　of　the　genus　Heterosphecia　Le　Cerf，1916 （Lepidoptera：
　　Sesiidae，　Osminiini）．　7ゼ鰓 α 14：131−141．
Hampson ，　G．　F．，［1893］．　 The　Fauna （ゾ君漉 納 加 伽 ，初ぬ dive　gCaylon　and 　Burma （Moths ）1．　xxiii ，527
　　　　　pp　，　　T　ay　lo　r　　a　nd　　　Fr　an　ci　s，　　L　on　do　n　．　　　　　　　　　　　　の
Le　Cerf，　R，1916．　Explicatio　ndes　planches．　In　OberthUr，　C．，　Etud．五ゆガ諾 ‘o晦）．12〔1）：14　pp ，，　pls　373−
　　381．
’ °
　　　　 ，1917．Contribution　sa　16tude　des　Aegeriidae ：Description　et　iconographie　desp 益ces 　et　de
　　formes　nouvelles 　ou 　peu　connues ．　 Ibid．14：137−388．
摘 要
東洋区の Osminiini族の新属新種 （鱗翅 目 ス カ シバ ガ科）（Oleg　G．　Gorbunov ・有田　豊）
，
ス イス ， ジュ ネーブの 自然史博物館の ス カ シバ ガの コ レ クシ ョ ン を調査中に腹部第 8節背面か ら大
変長い紐状の 突起の ある奇妙なス カ シバ ガ を見い だ した （Fig．1）．これ は精査の 結果 　 Osminiini族
，
の 新属新種と認め られ るの で 記載し，東洋区の Osminiini族の検索表 も作成した ．
AkaisPhecia　melanopuncta 　Gorbunov　et　Arita　gen ．　et　sp ．　n．（Figs　1−4）
ベ トナム の Vang 　 Lom （この地名は現在の地図には見いだせ ない）で得られた 3♂ によ っ て記載し
た ．この新属新種は，腹部第 8節背面か ら腹部 とほ ぼ同じ長さの長い 紐状の鱗粉が左右か ら出て，
それが 1本の紐状の突起になっ て い る．大変ユ ニ ークな スカ シバ ガである．
（Accepted　November　7， 1994）
Published　by　the　Lepidopterologic　aSlociety　of　Japan，
c／00gata 　Building，2−17，　Imabashi　3−chome ，　Chuo−ku，　Osaka，541　Japan
一
NNI工I工-EElleoetcrotniroonic　 LLiibrbarryary 　Service