A Redescription of Brahmina ciliaticollis MOSER : Coleoptera, Scarabaeidae, Melolonthinae

4 Pages·1997·3.6 MB·English

by  Itoh, T

E、l・″a.'「ok、・,.2Sl1):l、3 lI6.Mayl5.l997
as ARedescriptionof ,・a (cid:0)(cid:3725) cl/laflcof1l MOSE
(Coleoptera,Scarabaeidae,Me1olonthinae)
Takeshi ITCH
Higashi-naruocho2-1-l3-212,Nishinomiya,Hyogo,663Japan
Abstract AVietnamesespeciesofrhizotroginegenusB,ahmina、B. t'iliaticoms
MosER.l914isredescribed.
ThegenusB,・a;1,ninaBLAN(llARDisagroupofsmall-sizedscarabaeidbeetlesof
thesubtribeRhizotrogina,andincludesabout70speciesintherangefromEastAsiato
TurkestanviaIndia.Itseemstobedividedintosomeheterogeneoussmallgroups.
Fortunately,Ihadanopportunitytoexamineaseriesofme1olonthidbeetlesfrom
Vietnamand foundnumerousspecimensof8・,ail川, ,Ia(・l/,a',-//IsMOSER, l914.This
specieshasbeenneitherrecordednordiagnosedsinceMOSERdescribedit from3 fe-
malespecimens、andnodescriptionofmalespecimensisnaturally f、ound. In this
paper、Iamgoingtoredescribeitbasedonadditionalmaterialsandatypespecimen.
lwishtoexpressmydeepgratitudetoProf.Dr.F. rillKt・、: Prof.Dr.M.UHLI(,and
Mr.J.ScHuL7,EoftheMuseum fiirNaturkundederHumboldt-UniversitiitzuBerlin for
theirkindloanofatypespecimenofB.clliattcollis,andtoMr.M.FuJloK^ofTokyo
forhiskindofferofthematerials.MyheartythanksarealsoduetoDr.S.-I.UENo for
hiscritical readingofthemanuscript,andtoMr.K.MATsuDAofTakarazuka forhis
excellentguidanceinthecourseofmystudy.
Brab″linaciliaticollisMOSER,1914
huh,,,,naciliati(・cillsMosER.1914. l53-154(Tonkin:Hanoi、.
Desc・,-tption. Length:9.7-13.6mm.
Male. Headreddishtodarkreddishbrown,pronotumreddishbrown,elytraand
ventralsurfacelightbrowntobrown,antennaeandlegsbrown.Pronotum,ventralsur-
faceandlegsmoderatelyshining,buttheelytraarealmostopaque.
Headmoderately wide,clypcussubtrapezoidal,coarsely anddensely punctate,
2.9-3.6(3.3onanaverage,n=20) timesaswideaslong,straightatanteriormargin
and roundedat anterior corners; frons verycoarsely rugose-punctate,coveredwith
shorterectpubescence andbearingapairofsmalltuberclesoranobscuretransverse
elevation;vertex notsharplycarinate, butdistinctlydeclivousanteriad;eyesmoder-
atelyprominent, interoculardistance0.64-0.69(0.67onanaverage,n=20)timesas
114 TakeshiITol
),一
1 2
Figs. l 2. B,u;,,nt,Ia(・1/,'attco11isMosllR; l.malefromSapa;2.type(9)fromHanoi
wideasthewidthofhead;antennae10-segmented;antennalclublongerthanthetotal
lengthofapical 6segmentsof7-segmented footstalk, butshorterthan footstalk;men-
tumratherconvex.
Pronotum0.57-0.61(0.59onanaverage,n=20) timesaslongaswide,smooth,
somewhatsparselyandcoarsely punctate,butdenselysonearsides;anteriormargin
rimmed,engravedwithsetigerouspuncturesalongitsposteriormargin,whichgivesa
serrateappearance;anteriorandposterioranglesalmostrectangularthoughtheposte-
rior onesaresometimesalittleobtuse, lateralmarginnarrowly reflexedthroughout,
distinctlyproducedatmiddle,straightandprovidedwithseveral longbristlesinante-
riorhalf feeblytomoderatelysinuateandwithorwithoutafewshortbristlesinposte-
riorhalf,andsomewhatconstrictedbeforeposteriorangles;posteriormarginfurnished
witharowofpuncturesthroughout,finelyrimmednearbothcorners,whoserimisen-
gravedwithpunctures;discwithaweakdepressioninsideanteriorcomers,andtrans-
versely furrowedin frontoftherimofposteriormargin.Scutellummoderatelypunc-
tate,hardlyorslightlysoatbase.
Elytracostate,sutural costawell-raised,0.13-0.19(0.l6onanaverage,n=20)
timesaswideaselytra1width,1stcostaflattened,graduallywideningapicadandap-
proachingsuturalone;lateralmarginalareamat fromlevelofmetacoxatoapex;epi-
pleuronreachingorpassingmetacoxallevel;marginalmembranegenerallyinvisible.
Prosternumhairy,providedwithasubtrapczoidal keel medic-basally,mesoster-
numhairy,scabrous inanteriorhalf.smoothandsparselypunctateinposterior half;
metasternumsomewhatconvex,providedwithhairypuncturessomewhatdensely.Ab-
dominal centralareasparselypubescent.Pygidiumcoarsely,somewhatsparselyand
sometimesslightlyrugoselypunctate.
Legsslender;metacoxadevoidoflateralmarginal furrow;metafemur0.27-0.31
(0.29onanaverage, n=20) timesas wideas long,somewhat stout, shining, and
sparsely punctate; mcta、femoral bristles about 0.22-0.38 times as longas widthof
Redescriptiono「8,u1/_,,oc前a'1'(・o1/js ll5
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b
Figs. 3-l2. B,uhnli,Iaciliatico1lisMOSER. - 3.Parto「head;4,antenna, ;5,pronotum,?;6,punc-
tationofpronotum;7.partofrightelytron;8,apicalportiono「malegenitalia,a:dorso-lateralview.
b:lateralview;9,apicalportionoffemalegenitalia:10,mctatibialapicalspurs,(;; ll,clawoffore
leg; l2.metatibiaa:(;,b:9.
metafemur;metatibiaslender, longermetatibialspurshorter than lstmetatarsalseg-
ment;metatarsiwith1stsegmentshorterthan2nd.Clawbl-toothed,withapical tooth
slenderandinnertoothstoutandtruncatedattheapex.
MalegenitaliaasshowninFig 8; internalsacwithseveral longflagella,a few
spines,bristlesandsclerotizedarmatures.
Female. Clypeus3.0-3.9 (3.3onanaverage,n=20) timesaswideas long.
Fronspunctateandtuberculateortransverselyelevatedasinmale,interoculardistance
0.65_0.69(0.67onanaverage,n=20)timesaswideaswidthofhead;antennalclub
longerthanthetotallengtho「apical6segmentsoffootstalk,thoughshorterthanfoot-
stalk.Pronotum0.56-0.60(0.58onanaverage,n=20)timesaslongaswide;anterior
marginmuchwidelyrimmedandengravedwithpuncturesinthesamewayasinmale,
widely furrowedalongtherim,butthe furrowisapparentlynarrowedatmiddle;pos-
tero-latera1marginsstronglytomoderatelysinuate,butlesssointhetypespecimen.
Metafemur0.33-0.37(0.35onanaverage,n=20)timesaswideaslong;metafemora1
bristlesabout0.28-0.44 timesaslongaswidthofmetafemur,longermctatibialspur
equalinlengthfoistmetatarsalsegment;metatarsiwith1stsegmentshorterthanthe
2nd.GenitaliaasshowninFig9;coxitefused,withadistinctprojectionatapex.
Distribution. NorthVietnam,SouthChina.
Specimense.ta″u,1ed. 10(313,599,Sapa,HoangLienSon, l-V-l991,M. Fu-
JloKAleg; lldd l9?9,samelocality, 3~28-V-1993,N. KATSURAleg; l9(type),
with three labels inscribed ''Hanoi.1903.”,“B,-alln1"Ia clliaticollis Mos. Type” and
i9,“Tall
“zool. Mus. Berlin”; 2(fd l “ChinaYunnan”, “Zool. Mus. Berlin”; l d
,
ll6 Takeshi I'lull
Haut Yunnan”,“Zoo1. Mus. Berlin”;2 9,'''KiukiangChina”,“Zool.Mus.Berlin”.
TwospecimensfromSapaaredonatedtotheMuseumfiirNaturkundederHum-
boldt-UniversitatzuBerlinandtheMuseumofNatureandHumanActivities,Hyogo,
respectively.
要 約
伊藤 式1: :ベトナム産アカチャコカーネの一種, Bruhminacitiatico11isMOSERのill記 . - 本
lは, 北ベトナムから得られた3個体の難標本に基づいて, MOSERにより記 されて以来, 現
在まで形態Jr的な前是説明も追加記録もなされていなかった. ?t・回, 本和lの雄個体を含めて多
数の標本を検視することができたので, 改めてここに再記般を行った.
LiteratureCited
MOSER,J.、l914. NeueMelolonthiden-ArtenausderSammlungdosHermDr.H.J.VETH(Haag). Notes
Levde,,Mt‘s.,36: l48-l56.
Eh・lru,Ttok、,o,2S(l):116.Mayl5,l997
OccurrenceofZoodesfo(rmosanus(Coleoptera,
Cerambycidae)inNorthernVietnam
TatsuyaNIIsAT0
BioindicatorCo.,Ltd.,Takada3-l6-;,Toshima-ku,Tokyo. l61Japan
Zoodes/brmosa,ms・isalittle-knownhesperophaninecerambycidbeetleandhasso farbeen
knownasanendemictoTaiwan.Recently, l hadanopportunity toexamineasingle female
specimenofthesamespeciescollectednearthenorthernborderofVietnam.It isaninteresting
examplefi・omthezoogeographicalviewpoint,exhibitingarelationshipofthecerambycid fau-
nasbetweennorthernVietnamandTaiwan.The faciesoftheVietnamesespecimenaresimilar
tothoseofthetypepopulation,exceptforsomeweakdiffeirencesregardedasinfraspecificvari-
ation.
Zoo‘l,esfoirmosanusNIlsATo, l982
Zoodesfo,mosam!sN、lsATo, l982,Trans.Shikokuent.Soc.,16,pp 41-43,figs. I-2.
Speel,nonexamined l 9.nearSapa,LaoCalProv.,N.Vietnam,V-l996
Distribut,'0,1. Taiwan,N. Vietnam(newrecord).