Early stages of Euthalia byakko from central Laos

2011·1.1 MB·

TThhee LLeepipdiopdteorpoltoegircaollSoocgieitycal Society ooff JJaapapnan
ec t ma Lepidopte Srcaienc 6e2 (3 )1:18-120, October 2011
Early stages of Euthali abyakk forom central Laos
Hiroyuk WiAKAHARAi), Tatsuo MiyAMcn]o2 )and Masayuki NiMuRA3)
i)SybupHuan-14SykhaiR,O.Box62]7,Vientianteh,eLaoR D.R.

2)2-4-lOF,utabaU,tsunomiyaT,bchigi,321-Ol64Japan

3) Kokoro Medieu] and WelftLr Perofessiona Clolle- g1e1,-8 Kamizenza N,agasak i8,50-O04 8Japan
Abstrac tVV℃ collected two second inst a] arrvae of Euthalia byakk oin the suburbs ef Xieng Khouang Province in centra]
Laos in Januar y2009 and were the fir stto succeed in gettin gthese ]arva eto emerge by rem'ing. As these tarva ewere
col]ected on a lea fsurface of Lithocatp"s (lhsan ispa. )along a central vein, we bred them using a len fof Lithocarpus
(Fhrsa nedi"lais) as a substitute food plunt and succeeded in gettin gadult fernal eand male individua ltso emerge,
Key wordsce]tral Laos, earty stages, Euthatia byakko L,ithocarpu s(Rzsani Nay)mp,halidue.
Introduction We repert below on tih reearing of two of them which we
Euthatiab.vakkUoehara& Ybshida,1995(Lepidopteraco,llected firs Bte.cause of the srnal1 number collected, we
Nymphal idae) wa s firs cto ll ected in O udom xay (northernconcentrated on the rearing and show photograph sof only
thesecondandlast(6th)instartWeusedaleafofLithocarpus
L(aUoesh )bay r Uaanedh aYrOas &h Yibds ahI,i9d9a5 ,a)n .dS irenpcor ettehde bn y,E .t hbe>m' ian k1 k9ho9a5s (Risan iedaul)is as a substitute food plant.
also been collected in central Laos, e.g. Laksao (Osad eat
at, 1999) .This shows that this butterf liynhabit csentral Result and Discussion
Laos as well as the northern part. The instalrarva(Fi2g),
second
Hpouwpeay, hearv, et hnoet e asrol yf asrt bageeesn odfi tshcios vseperceieds., egg, laiv aand Tarhoeun dta r3v-a 5a mtm th ii sns tlaegeng th ha(so 1nO ep paaiir orns oefac hnee dsleegmen th,air as nodf
'l'our
In January 2009, we collected early age larva eof eaeh bearin gmultiple subsidiary needles, simi1ar to other
Euthali sap, in Xieng Khouang Province in central Laos, Euthali aspecies (Fukud 2a0,00)) A.t this stage, there was
One of the presen tauthors (MT) reared i tusing a lea fof a feedin gtrace of this larv ain the dista elnd of a leaf .The
Lithocarpu esduIis as a substitute food pl ant and succeeded 1arv afed on the whole leaf or half of it ,except fbr the
in getti ntgwo adult individua ltso emerge. As a result, central vein and commonly rested on the central vein of
we found tha tthe larv athat we collected was the second the leaf surface,
instalrarva Euthalibayakko,
of The last(6thi)nstalrarva(Fig3,)

Iconl ltehcit ispngap leorc ,aweti ro enpaonrdt t hoen eatrhiey e lnvairrovna mlestnatges. around the Aand p imannyk li snu bersiudniasr yalo nne egtdlhese mi dglrinoew f orfo tm heea cdho rmasinum pneoerdtlei,on
Collecti nlgocatio dna,te and situation as in the second insta rT,his larva alse remained stil lon a
Wien t choe lfleoctreed s 2tt5w ok mea realsyt-a goef Plhaornv aS eaofv atnh (e EXnittehn aKggh ifoauaamnigly cmemntr (aln vo eitinn.c l1u[dlii 1ne atgrhve an efleudl1 el] esnpignte hsw)a.s T hapep rmooxripmhaotleolgyical 57
characteristicsefthelastinstarresernblesthoseofEuthalia
Pef(frbP orLaveisist ntahicosn e ca ia, asllapra,tp) u(iur sFt(e uilI fad go]p1epr.kr):eo,exs istmma aatsinepnl.ily yoan ) c18o2mt0ph 0rJimas)ni nuonga raL y li2et0ah0f o9suc.r faTarchepiisis f(s1uo9Mrfr9aa7cmhe)ao .alsPsd au iaipnlns aaoat) hoffotoesn reof mr eEo(st.sFe dbary nuaonahk ksaot c(oenIr t[grfa[a]t1 ri }vleaer aisans)n htid,onfi s Fttuhak eo rufld eEaa,,f
When we collected these larvae t,hey were resting on a (Fig4.)
lea fsurface ofLithocarpus (Ptzsa nspi, aal)ong the central
vein (Fi g2.) .Larvae resembling Ettthat iaanosia were The pupal body color is dark green generall ya,nd the
presen ton the same tree ,but they were in every case fOund prQjecti oarnes golden T,he lengt his approximately 34
in a remote positi oonn the central veins on the under mm. The external morphology of the pupa is similar to
sui:face of leaves, that of Eitthali a(imhaldi fao)rmosa nCaFruhstorfer)
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Earl ystages of E"thatia byakko 119
Fig. 1,Food plant Lithocarpu s(Ptisa nspi. aj)un. 2009 (WH), Fig ,2. Secon dinst alrarva and it sfeedin. tgrace.
Jun .2009 (NM) .Fig. 3. Last (6t hi)nsta irarva in rearing conditjon. Mar. 2009 (MT). Fig. 4. Pupa (Same
individu aas lfig ,3), Apri] ,2009 (MT) .Fig. 5. Adult f,ema]e (Same individua als fig 3. and 4) ,uppcr
side, (MT>The forewings are 63 mm in length .Fig. 6. Ditto ,under side. (MT) .Fig .7. Mass rearing, Mar,
2oeg(wH).

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TThhee　 LLeepipdiopdteorpoltoegiroaollogical　 SSoooiceityety 　ooff　 JJaapapnan
120 H，WAKAHARA 　et　al，
（lgaras　hanid 　Fukuda，1997）． 　　Euthalia（Lepidopter，a　Nymphalidae）from　Laos．7），o　Ga
Adult（Figs　5，6） 　Yo　ko4c5h：，i　2T5．1，−22（｝514a．．　Revi：　ion　e’C［the　Suhgenus　Li｝nbusa 　MOORE 、
The　adult　individua　ltshat　emerged 　were 　one 　ma 豆e　and 　　「189’7］（Lepidoptera，　Nyi皿phalidae，　Adoliadini）Paエt　L
Q6n3em　mfema（flee，m　oafl　weh；iFcihgs　君o5r，ew6i）lligsn　l　weenregt　，5　hr3esmpmecti（vmeallye．）　Tahnde 　　　　SルfyaSts，e　im＞aatti，C　”anil，sain，gげemC梶n隅t，　Hi　Rsndt．，　　tSaeXr，　oAn，On8：ii1　lc9i−S6，t7β．Uit．　Kitakyushu
male 　forewing　slengt　his　a］most 　exact ］y　the　same 　as　that
of にhe　holotyp　sepecimen （52　mm ；Uehara　alld　Ybshida 摘　 要
，
w1e9re95；　aYlsook　oqcuhiit，2　es0i1mi0l）a．　rT　hteo　　twhiolsleg　　moaftエhkei　nhgos　olfothtey　ip　snepdeicivmienduals ラオス・産ビャ ッ コ イナズマ の幼生期 （若原弘之 ・宮本
（Uehara　and 　Yoshida，1995；Yokochi，20］0）． 龍夫 二村正之）
Addendum 筆者らは2e｛〕9年1月に「卜部ラオスのシェ ンクアン県にて
2個体の ビャ ッ コ イナズマ Euthali　abyakkoの 2齢幼虫を採
In　March　of　the　same 　year，　Qne 　Qf　the　authors （WH ） 集した，採集時，これらの 幼虫は例外なく食樹で ある
col丘ected 　dozen　sof　the　same 　larva　len　this　locatio　annd Lithocarp（uPsasania）属の葉表面の主脈上に静止していた，
succeeded 　in　gettin　gmost 　of　the　larva　eto　emerge 　by
rearing （Fig．7）．The　detail　wsil1 　be　given　in　a　futur　ercpor し 筆者らはこれらの幼虫を同属の マ テバ シイLithocarpus
（Pasaniα）edutis の成葉により飼育し，成虫へ 羽化させるこ
とに成功した．羽化個体は雄雌各1個体で，その うち雄の
References 前翅長は53m皿 であり，翅型，斑紋とともにホロタイプ標
Fukuda，　H．，2000．　Crypsis　and 　waming 　behavio　rof　nymphalid 本一（52　mm ；Uehara　and 　Yoshida，1995．，　Yokochi，　2010）とほぼ
　　larvae（Eutha正ini：iNymphal 三dae）bearin　fgeathe　rlyateral 致した．また雌の前翅長は63mm で，翅型，斑紋ととも
　　proces。ss，劭 ttentie　2s5：28−32， にOsadaら，1999に掲載された中部一ラオスのLalcsaoにおけ
Igarash，i　S．　and 　H，　Fukuda，1997，　The　Lif　eHistori　oefs　ASian る採鰾 本 （前翅長60　mm ）とほぼ 致した．繍 幼虫鱒
　　　　BKuatntaegrafwiai　V．es（）】．1．438−439．　Tokfi　iUniversit　Pyress．　Hadan ， のタ大カきサさやゴ形イ，体チ色モ等ンは五ジ十Eu嵐that福ia田（Ma（1h9a9l7d）iに“）掲f載brさmれosたana
’
Osada，　S，，YUen 〕ura　and　J，　Uehara，1999．An　lllustrat　Cehdecklist 〔Fruhst。rler）のそれに類似し，終齢幼虫が食樹の葉上中央部
　　of　the　Butte且rie　sof　Laos　P．D．R、240　pp．，正43　pls，Mokuyo− の中肋 Eで静1ヒする点も本種と共通であっ た．
　　sya ，　TokyQ．
Uehara，　J．　and 　T，　Yoshida，1995．　A 口ew 　species 　of　the　gellus （Reccived　January　17，2011．　Accepted　August　1，20H ）
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