A new species of the genus Triaxomera Zagulajev (Lepidoptera, Tineidae) from Japan

6 Pages·2002·1 MB·

TThhee LLeepipdiopdteorpoltoegircaollSoocgieitycal Society ooff JJaapapnan
wtLwt 7)ans. IopialSoc.Jdpan 53 (4):209-2I4, September2002

A new species of the genus Triaxomera Zagulajey (Lepidopt eTirnae,idae)
from Japan

Yasuyuki MiyAMoTo'), Toshiya H[RowATARi2> and Miyuki YAMATvioTo3)"
V･2}Entomological Laboratory ,Graduate School of Agriculture and Bioiogica lSciences,
Osaka PrefectureUniversity,Sakai,Osaka, 599-8531 Japan

3)Entomolegical Laboratory, College of' Agriculture, Osaka Prefecture University,
Sakai,Osaka,599-8531 Japan

Abstract T)iaxomera puncticulata sp. nov. is describe dmainly on the basi sof materiaLs
collected arollnd decayin gwoods of fibgus crenata B]ume at Mt Izumikatsuragi, southern Osaka
Prefeerur eJ,apan . The genus 7>-iaxomer Zaaguiajev is new to the Japanese fauna . The udult
morphological characters and brie fbiolegical netes are described.
Key words Tineidae, 7}iaxomera puncticulata, new species, Japan.
Introduction
Zagulajev (195 9e)stablished the genus 7>iaxomera ,wjth type species 7-Vhe ajutvimineiZti
Sodoffsky,1830,including dark background
small moths of conspicuous wing pattern of
and white spots. He separated this genus from heterogeneous IVbmapqgon Schrank on the
basi sof the spotted or cross-striped pattern on the forewings t,he presence of 3 apical spinules
on the tarsa lsegments and the absence ofa digita lprocess in the male genital valva.
Accerding to Zagulajev (1964 )t,he genus T>iaxomera include sthe mest archaic members of
the subfamily Nemapogoninae, which are distribut eidn the European USSR [Russia],
Siberi aC,aucasus ,Transcaucasi aa,ll of Europe, Mediterranea nregion and Asia Minor, Up
to the present t,he genus 7>iaxomera comprises 6 species: T jutvimit (rSeoidZodffs 1k8y30,),
Z parasitell a(HUbne r1,796) ,T caueasiella Zagu!ajex i1,959 ,71 baidensi Psetersen ,1983 ,Z
Petersen1,984 Z kurdensisZagulajev,1996. However, 7-briaxomera
marsica and no species
havehithertobeenknown fromJapan.

In May 1999, we collected day-fiying tineid moths around decaying woods of hagus crenata
Blume at Mt Izumikatsuragi, southern Osaka Prefbcture ,Japan. Examination of mor-
phologica lcharacters of the species reveaLed that it is a new species belonging to the genus
7leiaxoniera ,This paper deal swith the descripti oannd brie fbiologica lnotes of the new
7>'iaxomera
species,
Terminology used in this paper mainly fbl]ow sthose ofZagulajev (196 4an)d Robinson and
Nielsen (1993 )T,he holotype and all the paratype specimens of the new species are
in EntomologicalLaboratory,Graduate School Agriculture Biological
preserved of and
SciencesO,saka Prefi)ctureUniversity.

*Present address: Sun Life Co. Ltd, 1065-1, Tojchi-cho, Kashihara, Nara, 634-OO08 Japan
NNIII-IE-leEcltreoncitcronic LMbirabrryary Service
TThhee LLeepipdiopdteorpoltoegircaollSoocgieitycal Society ooff JJaapapnan
210 Yasuyuki MiyAMoTo, Toshiya HiRowATARi and Miyuki YAMAMoTo
'.'t,/t/i..ttty:..,;i.;l,t･':,t･",t-/-.ti,･',,,',Estlt./,/*1.\,.lii.l'lt;t･i{e:･l/,,'Y.ee/1;//,lll,ewi
/;:,･ /t.i,/F, ,it･;t{e･l,,,･./rt.//,･,-･t/'.,"ew-,m/'ll
Fig. I . T)iaxomera punctieulatasp.nov.anditshabi tatA.. Holotype, cin. B. Restjngadu!t.
C. A projecting exuvia lef tby emerged adu!t. D. Habitat E Head and thorax,
lateral F. Flagellum.
view.
1}iiaxomer apuncticulat asp. noy. (Fig 1s-5)
Wing span IO-14mm in male, I4-I6mm in female.
Head (Fig IsE-F,2A,3A), Vertex with black pilifor mscales, yellowis hwhite behind the
base of antennae near eye margins. Frons yellowis hwhite, with transfrontal sulcus (Fig.
2A). Antenna 2/3 forewinglength,black fiagellum long
mixed with white; male with
sensilla (Fi g3.A); surface of fiagellu mwith strong wrinkles and several rows of large
(Fig.3A).Compound in interocularindex
sensillum sockets eye moderate size with
(Davi s1,975) O.63-O.6 8.Maxi11ary palpus with white scales, slightly longer than labial
palpus ;4th segment longes twith short bristle s5t;h short and apically sharp, bearing a short
proces sat apical 1/4. Labial palpus subcylindrical and slightly curved dorsall y2;nd
segment with black scales except dista plart and with coarse long black bristl eons ventral side;
3rd
with white scales.
Thorax. Pro- and mesothorax black; tegula basall yblack and apically yellowis hwhite,
An elongate filifbr bmunch arising from ventral side oftegula. Forewing elongate, 4times
as long as wide exc]uding fringe ;black wjth white irregul anrarrow transverse striae around
basal 1/3, 1/2 and 2/3 ofcosta; 2-3 spots on dorsum running obliquely toward the costa; 2-
NII-Electronic Library Service
TThhee LLeepipdiopdteorpoltoegircaollSoocgieitycal Society ooff JJaapapnan
A Ne"' Specie sof 7).iaxomera 211
Sc+RlRs
"'t'V:"'"-"'i.LL.t.-.-1
xL t l. Ml
Nxkss'..!x--!k'x M2M3CuAl
CuA2
IA+2A
A B
Fig,2, 7)iaxomera puncticula tsap. nov. A. Head. B. Wing s･enation,
Fig.3 . 7)itvcomer apuncticula tsap. nov. A FIagellum . B, Fore- und midtibiae
3 minute spots on apical area. Fringe same color as the wing, and 2 to 4 white spots, Veins
R, and R, net approximated basally ,Hindwing polish dark brown . M, reaching the outer
margin of wing near apex (Fi g2,B). Leg with black scales; tibiae and tarsal segments with
rings
white apically,
Abdomen. Covered black
with oily scales.
Male genital i(aFig 4.). Tegumen and vinculum fused into a broad ring, Uncus broad
basail yand rounded apically. Gnathos geniculate . Saccus simple, lateral lfylattened,
dorsally.Valvabroad,dorsal bearing
slightly curved margin smooth; ventral margin a short
spatulate process .Aedeagus cylindrical, dorsoventral lfylattene vdv,'eakly curved dorsall yat
1/3.
apical
Female genitali (aFig 5.). Eighth sternite without median proces sand bearing long, thick
bristl eons posterio mrargin. Apophysis anterioris uncinated apically. Ductus bursa elong,
gradually broadened toward corpus bursae . Corpus bursae ellipsoidal; signum elongate
wedge-shaped with a iongitudina glroove ,internal lwiyth dense coyer of minute spines.
Holotype. [HonshuO]sa:ka Prefi,Mt Izumikatsuragi1,6. 1999(T,Hirowatari).
c?n, v.
NII-Electronic Library Service
TThhee LLeepipdiopdteorpoltoegircaollSoocgieitycal Society ooff JJaapapnan
212 Yasuyuki MiyAMoTo, Toshiya HIRowATARI and Miyuki YA}viAMoTo

F

G
Fig. 4. Male genitali aof T?iaxotnera puncticulata sp. nov. A, Whole genitalia except
lateral B, Ditto, C. Valva,dorsal D, Ditto,
aedeagus, view, ventral view. view.
internal view. E. Juxta ,posterio vriew. F. Aedeagus, latera lview. G. Ditto, dorsal
view.
Paratypes .13 di 1 ?, sarne data as holotype ;6 cl 4 9, sarne localit y1,8. v. 1999 (Y.
Miyamoto); 3 (Sn 1 g, same locality ,18. v. 1999 (M, Yamamoto); 7 6n 1 \, same locality,
18. 2000 (Y.Miyarnoto);6cl24, locality1,9. 2001 (Y.Miyamoto); 4c7 45,
v. same v.
same localit y2,0. v. 2oo1 (Y .Miyamoto); 3 8 3 \, Nara Prefl M,t Kojindake, 14 ,vi. 1978
(T .Yasuda). [Kyushu]:1 cK{umia,rnoto Pref, Mt Mukozakayama, 11. x. 1996, (M.
Sakai);2cl, Kumamoto Prefi,izumi-mura,Shiibagoe,20, iv.1996(M, Sakai);19,

MiyaxakiPrefiM,t Mukosawa, 11, 1996(M,Sakai),
x,
NII-Electronic Library Service
TThhee LLeepipdiopdteorpoltoegircaollSoocgieitycal Society ooff JJaapapnan
A New Speeie sof 7)iaxomera 213
E
)
t/,:l.",-:i,ec",.'s'S".
A
/hLsl '
sl ',
' ,Sg". ',: V1',v.l
--.llE l･I F'I
E r" /tr

Fig. 5. Female genitalia of 7>-iaxomera puncticulata sp. nov. A. OIJiposi t o r,ventral view.
B. Eighth segment and bursa copulatrix, ventral view. C. Ditio.Iater alview D.
Signum, internal (dosa rv}iew. E. Ditto ,interna l(latervaile)w.
Disnibution. Japan (HonshuK,yushu).

Biology. This species was collected at 820 m alt in the deciduous fores etfthe northern slope
of Mt lzumikatsuragi (857m )where ,Flagus crenata Blume dominates . The moths were
observed flyin gin middle te lat eMay during I999 and 2oo1, Most tineid adults are active
at dusk or during the night, but many individual osf this species were observed running or
sitting on decaying tree bark of E crenata that wa$ infeste dby a pore fungus (liomas
fomentan' anuds )so,metimes actively flyin garound it in daytime . A pupal exuvia projecting
from the surface ef decayin bgark indicate tshat larva eof this species feed on the decaying
fungus-infest ebdeech wood (Fig IsC-D) as it was reported in 7)iaxomera .fulvimitreiZa
(Sodoff s(kZya)gulaj e19v6,4) ,This species is rarely caught by the ligh ttrap.
Remarks. Judging from the forewing patter nand male genita lstructures, this species is
NII-Electronic Library Service
TThhee　 LLeepipdiopdteorpoltoegiroaollogical　 SSoooiceityety 　ooff　 JJaapapnan
「
214 Yasuyuki　MIYAMoTo，roshiya　HiRowATARI 　and 　Miyuki　YAMAMoTo
considered 　to　be　closely 　related　to　Z　fulvimit（rSoedloflfasky）．　 However，　it　is　distinguishable
from　the　latte　bry　the　differen　cofe　shape 　of 　valva 　and 　absence 　of　coarse 　spines 　ofinner 　dorsal
margin 　of　valva 　in　the　male 　genitalia，　 In　the　female，　this　species　has　a　characteristic 　signum
，
which 　is　similar 　to　that　of 　7：cauc αsiella　Zagulajev．
“
Etymology．　 The 　Latin puncticulata” refers　to　the　small 　white 　spots 　of 　the　f（）rewing 　of 　the
new specles ・

Acknowledgments
．
We 　wish 　to　express 　our 　hearty　thanks　to　Dr 　M ．　Sakai （Bi．osystematic　sLaboratory，　Kyushu
Universit）yfbr　his　instruct　isuvgegestion 　on 　the　JapaneseNemapogoninae　and 　fbr　valuable
sp  imens．　 Our　cordlal 　thanks 　are　due　to　Prof．　M ．　Ishi　iand 　Mr　N ．　Hirai（Osaka　Prefecture
Universit）y　fbr　their　invaluabl　eadvice 　and 　hospitali　tdyuring　this　study ．　 We 　are　also
，
grate飼 to　Dr　T．　Ueda （Chiikikankyokeikak　uCo．　Ltd，　Osaka）fbr　his　kind　help　and 　advice ．
References
Davis，　D ，　R．，1975．　 West　lndian　mo 〔hs　of　the　family　Psychidae　with 　description　of　new 　taxa　and
　　　immature　stages．　Smithson．　Contr．　ZooL　l88： 1−66，
Robinson 　G．　S、＆E．　S．　Nielsen，1993．　Tineid　genera　of　Australia（Lepidoptera）．　 Monogr ．．4　ust．　Lepid．
　　　2：xvi，，1−344．　CSIRO ，　Melbourne ．
Zagulajev，　A．　K．，1959．　Anew 　genus　and 　spocies　of　Nemapogoninae （Lepideptera，　Tineidae）．　EnL
　　　Obozr．38：879−884 （in　Russian）．
　　　　　　，1964．Tineidae，　part　2．　 Nemapogon 洫ae．　 Fauna 　SSSR （N ．　S．）86 （Lepidoptera　4（2））；1−
　　　424，lp1．（in　R．巳ssia皿），　［English　rranslation ， 1968，　Jerusalem．］
摘 要
日本産 Triaxomera属 麟 翅目 ヒロ ズコ ガ科）の 1新種 （宮本泰行 ・広渡俊哉 ・山本みゆき）
，
大阪府和泉葛城山の ブナの立ち枯れなどか ら発生した ヒ ロ ズコ ガ を調べ た ところ これ まで 日本か ら
，
記録の なか っ た Triaxomera 　ma（ミヤマ ヒ ロ ズコ ガ属：新称）に含 まれ る種で ある こ とがわか っ た，
Triaxomera属はロ シアか ら記載 され，現在まで に ヨ ーm ッパ な どの落葉樹林に生息す る 6種が知 ら
れるが 本種はその い ずれに も該当せず，7地 xo 耀 雌 属の新種で ある と判断した．そ こで，本種 を
，
Triaxomera　punctieulata（シラホ シ ミヤマ ヒロ ズコ ガ）と命名し，成虫の形態を記載した．
Triaxomera　N は 脚 の各ふ節に 3本の距を持つ こ とや，雄交尾器の valva は指状突起を持た ない こ と
な どで近縁の Ar，emapogon属などと区別 される．本種の外見は本属の模式種で あ る T．　fulvimitにreUa
似るが，前翅 の 白斑が小さい こ と，雄交尾器の valva の背方内壁 に鋸歯を持たない こ と，などの点で
識別で きる．
（Accepted　April　26，2002）
Publishe　dby　the　Lepidopterological　Societ　yof　Japan，
5−20，Motoyokoyama 　2，　Hachiojj，　Tokyo ，］92−0063　Japan
一
NNI工I工-EElleoetcrotniroonic　 LLiibrbarryary 　Service