Discovery of a New Olenecamptus (Coleoptera, Cerambycidae) from the Ogasawara Islands, Japan

2004·2.1 MB·

by  Hasegawa, M

E;1、,1,-a.Tok、,o,32(1):225-228.May31,2004
DiscoveryofaNew01enecamptus(Coleoptera,Cerambycidae)
fromtheOgasawaraIslands,Japan
Michiaki HAsEGAwA
ToyohashiMuseumofNaturalHistory.
1-2380ana,0iwa,Toyohashi,441-3147Japan
Abstract Anewspeciesofthelamiinegenus 01e11eca,tlpt1ls isdescribedfrom
Ani-jimaIslandoftheOgasawaraIslandsunderthenameof0. /ilkuto1nl1.Itseemsrelated
to0.cl・etacetlsfromJapan,KoreaandTaiwan.
Inthesummer of2002,asingle femalespecimenofapeculiar dorcascematine
specieswas emerged out from adead branch of an unidentified broad-leaved tree,
whichwascollected fromAni-jimaIslandoftheOgasawaraIslands,byMr.Hirokazu
FUKUToMl inthespringofthesameyear,andwassubmittedtomefortaxonomicex-
amination. Thedorcascematine species in question actually belongs to the genus
01enecamptus,andseemtobeclosestto0.cretaceusBATES.However,thisspeciescan
beeasilydistinguished fromall known 01enecamptusspeciesincluding 0. cretaceus
bytheuniquemarkingsofelytraandthebodyform. Iamthereforegoingtodescribeit
asanewspeciesinthepresentpaper.
Beforegoing further,IwishtoexpressmydeepgratitudetoDr.TatsuyaNIIsATo
ofBioindicator Co.,Ltd.,Tokyo, forhisreading through theoriginalmanuscriptof
thispaper.ThanksarealsoduetoMr.HirokazuFUKuToMIofNagoyaCity, forgiving
metheopportunitytoexaminethisstrikingspecimen.
Theabbreviationsusedinthispaperareas follows; IEL-1ength of inferioreye
lobe,measured insublatera1view;GL-1engthofgena,measuredinsublatera1view;
PL-lengthofpronotum;PB-basalwidthofpronotum;EL-lengthofelytra;EW-
widthofelytraacrosshumeri; TL-total lengthofbody, fromtipofheadtoelytra1
apices.
OlenecamptusfukutomiiHAsEGAwA,sp nov.
[Japanesename:0gasawara-ooshiro-kamikiri]
(Figs.1-2)
Female. Large-sized species of elongatebody. Color almost light reddish
brown,partiallydarkreddishbrowninfemora,tarsi,scapeandapicalareasofantennal
segments3-11,eyesandmandiblesblack.Bodylargelyclothedwithshortgraypubes-
226 Michiaki HAst-c^、、'A
cenceanddecoratedwithwhitescales;headwithshortgraypubescence, thepubes-
cencedenseongenae,apicalhalfof fronsandmarginsofeyes,anddecoratedwith
small indistinctwhitepatchesinmiddleareaandalongbasalmarginofocciput;anten-
naewithscapeto4thsegmentsverysparselywithshortgraypubescence,andapical
halfof4thtolithsparselywithshortblackhairs;pronotumrathersparselywithgray
pubescenceexcept formidline,withbroadwhite vittaeatsides ofdisc;scutellum
sparselywithgraypubescence;elytrasparselywithgraypubescence,eachdecorated
withabroadvermiculatewhitevitta,whoseexternalmarginisconcaveinaU-shapeat
theposteriorpartofshoulderandbasal2/3.Sidesofbodydecoratedwithbroadwhite
vittaeextendingfrompronotumtoapexofabdomen.Venterofbodydenselyclothed
withgraypubescence.
Headvoluminous,scatteredwithgranulesonscape, frons,genaandnearmargins
ofeyes; frons(Fig 2A)stronglytransverse,moderatelyconvex,withdenseanddis-
tinctgranules;antennaltuberclesprominent,witharobustapicaltooth;eyeslargeand
strongly convex, with transverselysquareinferior eye-lobe, LEL/LG 175; occiput
Fig. 1. Ole'toea'1pttlslil、/life川' 1HAsE(IA、VA,sp nov..?、holotype;Adorsalvie、v;B,lateralview
New01,1(・a,llp111 fromtheOgasa、、,aras 227
A B
Fig. 2. 0/eneca,1lptusfilktlto,nil H^sl_G^WA,sp nov., holotype; A, head in「rental view; B,elytra1
,
apex. Scale:5mm
rather weakly rugose.Antennae1.8timesas longasbody,passingelytra1apicesat
baseof7thsegment;scapemoderatelyclavate,distinctlygranulateontheexteriorpart
ofscape,2ndsegmentandbasalhalfof3rdsegment;relativelengthsofsegmentsas
follows: - 4.4:1:18.5:11.8:11.8: l l.2:10.6:9.0:9.0:8.6:11.5.
Pronotumcylindrical,rathershort,weaklyconvexabove,constrictedatapicaland
basal fourth,widest behindmiddle;PL/PB0.95,EW/PB 148,EL/PL4.0; discdis-
tinctlytransverselyrugose.Scutellumsemicircular.
Elytra elongate, EL/EW 2.58, EL/TL 0.67; sideswithshouldersmoderately
prominent, almost parallel in basal fourth, thenweakly divergent posteria most
widelydistantatapical third,androundlyconvergent towardsapices,whicharenar-
rowlyobliquelytruncateandwithsmallequilateraltriangularteethatexternalan9leS
(Fig2B);discwithapairofindistinctcostae,ofwhichtheinneroneextendsfrombe-
hindbasetoapical3/7andtheotheronefrombehindshouldertoapicalseventh,pro-
vjdedwithdeeppuncturesthroughout, thoughthepuncturesbecomestron9er and
denser towards sjdes. Metasternum andabdomensparsely providedwithdeepand
largepuncturesexceptformedianareaofsternite7,eachpuncturebearingaSube「eCt
palehair.Legsstoutandrelativelyshort;firsttibiaabout1.2timesaston9asfemu「.
Bodylength20.5mm(fromtipofheadtoelytra1apices),width6.0mm(maxi-
mumwidthofelytra).
Male. Unknown.
Type specimen. Holotype: female, Ani-jima Is., 0gasawara Islands, Japan,
228 MichiakiHAsEGAwA
1-VII-2002(emerged),HirokazuFuKuToMl leg.(TMNH-I-21044).
Theholotype is deposited in theToyohashi MuseumofNatural History, Toyo-
hashiCity.
Distribtution. Ani-jimaIslandoftheOgasawaraIslands,Japan.
Note. 01eneamptus fukutomlI is similar to 0. c1-etaceus BATES from Japan,
KoreaandTaiwan, inhavingthecloselytransversely rugosepronotum, thenarrowly
obliquelytruncateelytra1apiceswhichareprovidedwithsmallrectangularteethatex-
ternalangles, thewhitescalesondorsalandlateralsurface, thegraypubescenceon
ventralsurface,andtwosemicircularincisionsontheexternalmarginsofwhitevittae
ontheelytraasinthoseof0.cl・etaceus.However,thenewspeciescanbeeasilydistin-
guishedfromalltheother 01enecamptusspeciesincluding0.cretaceusbytheunique
elytra1markingsandbodyform.
Etymology. Thespecificepithet isdedicatedtoMr. HirokazuFuKuToMl who
collectedthisinterestingspecies.
要 約
長谷川道明:小笠原諸島から発見されたシロカミキリ属の1新種. - 2002年の春に, 名
古屋市の福富宏和氏によって小笠原諸島兄島から採集された広葉樹の枯枝から, 同年の夏に羽
化脱出した非常に特異な大型のシロカミキリ属の1種に, オガサワラオオシロカミキリ
0/eneca,nptusfi,kuto,m,という新名をつけて記載した. この種は, 形態上の各種の特徴から, 日
本, 朝鮮半島および台湾に分布するオオシロカミキリ0.c・letaceusに類縁性の高い種であると考
えられる.
References
BREUNING,E.DE,1940. Etudessur lesLamiaires,IX.Dorcaschematini. No、lt ent., pa,・js, (11):527_
568.
DILLON, L.S., &E.S.DILLON,1948. ThetribeDorcaschematini(Coleoptera,Cerambycidae). T1・ans.
Atne1elf.Soc.,73:173-298,pls.1-14.