A New Species of the Genus Strangalia (Coleoptera, Cerambycidae, Lepturinae) from Taiwan

3 Pages·1994·3 MB·English

by  Shimomura, T

Elyt1・a, Tokyo,22(2):345-347,Nov.15,1994
ANewSpeciesoftheGenusStrangalia(Coleoptera,
Cerambycidae, Lepturinae) fromTaiwan
ToruSHIMOMURA
1-17,Ohi3-chemo,Shinagawa-ku,Tokyo,140Japan
Abstract Anewspecies,St1・a1,ga/laf、tリ'ital,isdescribedfromTaiwan(China). It
seemstobearelativeofS gl・ac11i'sGREsslTTfromtheRyukyu Islands.
The cerambycid beetles belonging to the genus St1'a1'ga/Ia AUDINET-SERvILLE,
1835(typespecies: Leptu1・ahltelcornlsFABRlclUs, l775, designatedbyTHOMSON,1860)
havebeen unknown from Taiwan. Thereweresome Taiwanesespeciesdescribedas
membersofSt・la,1ga/1a, but theyweretransferred to othergenera. However, I have
a femalespecimenof trueSt・,anga/1acollectedbyMr. H.FuJITAinnorthern Taiwan.
Thisspeciesissimilar toSgl'ac111sGREsslTT, I934, ingeneral appearanceandelytral
markings, butcanbeeasilydistinguished fromit byalmostdark reddishbodyinstead
of being yellowish brownexcept for blackish portions. Most probably it isundo-
scribed. 「amthereforegoingtodescribeitasanewspeciesin thepresent paper.
' Sfl・anga1fa f ・l'fat s nov.
(Fig.1)
Fenla/e. Head dark redwithmaxillaryand labial palpi nearlyblack, antennae
darkredthoughtheapicalportionsof3rdto5thand6thto11thsegmentsblack;pro-
thoraxdarkredwithanteriorandposterior marginsand theundersidealmost black;
scutellumandundersidesofmeso-metathoracesblack, thoughmost of metasternum
andmetepisternumisdarkred;elytradarkyellowishbrownandmarkedwithblack,
threetransversebands, and humeri, basal portionsofpleural ridges,sutural margins
and apical portiondark red; legsdark redwithcoxae, trochanters, apicesof meso-
metatibiae,andapicalportionsof1standremainingsegmentsofmeso-andmetatarsi
almost black: abdomen dark red, somewhat shiny on the underside, anterior and
posteriorportionsof1st andposteriormarginof2ndsternitesblack.
Headmuchnarrowerthanposteriorwidthofprothorax(widthacrosseyes:width
ofprothorax=3.0:4.5)1clypeussparselyandsomewhatcoarselypuncturedandcov-
ered with blackish pubescence which becomes pale yellow towards apex; frons to
vertexdensely and finely punctured and covered with short blackish pubescence,ex-
cept foramedianglabroustriangle;antennaeslightlysurpassingthemiddleofelytra
andsomewhatthickerthanthoseofSgl・ac・1/Is,andprovidedwithanextremelyshallow
depressiononeach of 6thto11thsegments, 1st to5thsegmentscovered withblack,
346 TO「uSHIMOMUR^
Fig.1. Sit・a,1go/1a/ll/l1a1SHIMoMUltA,sp nov.,femaleholotype, fromPihuinnorthernTaiwan
subrecumbent bristle-likehairs,andapical outeranglesof 6th to10thsegmentswith
short, bristle-likehairs: relative lengthsof antennalsegments=2.5:0.5:3.5:2.8:3.2:
2.2: 2.0: 1.5: 1.5: 1.2:1.7.
Pronotumslightlybroader thanlong(4.0:4.2),sidessomewhatmoresinuatethan
in S gl・ad/Is;surfacefinelypunctured andcovet-edwithshort blackpubescence, and
with goldenpubescencenearposterior margin, thepuncturessomewhat sparser and
lesssharplyoutlinedthan thoseofS gl・a(・:1/Is;meso-metathoracesminutelypunctured
andcoveredwithpaleyellowishpubescence.
Elytra about 2.7 times as long as humeral width: each apex narrowly and ob-
liquely truncated, witha toothat outerangle;surface finelyandsparsely punctured
andcoveredwithgolden recumbent、short pubescenceindarkyellowishbrownareas
andwithblack, recumbent,short pubescenceinblackanddarkreddishareas.
Legs with hind femorasomewhatmoreswollen than in S glad/Is; hind tibiae
distinctlybroadenedinapical portioninlateralview1femoraand tibiaecoveredwith
black, recumbent,short pubescence: 2ndand3rdsegmentsof hind tarsi thinner and
longerthaninSg/・ae11is,basal threesegmentsofhind tarsusinaratioof5.0:2.8:1.2.
Abdomen with 1st to4thsternitesextremely minutely and sparsely punctured
andsparsely covered withshort pubescence, the punctures becomingmuchsparser
towards each posterior margin; 5thsternitedistinctlydepressed inabout apical two-
mao NewSr1・_ge11/' fr Taiwa 347
fifths,apicalmargintruncate;surfaceminutelypunctured,sparselycoveredwithpale
yellowishpubescenceandwithblackpubescenceonlateralandapicalmargjns.
Length:17.5mm(measured fromtipsofmandiblestoelytralapex), width:3.9
mm(measuredbetweenhumeralanglesofelytra).
Holotype: ,Pihu, Pinglin, TaipeiProf., Taiwan, 21-V-1977, H. FUJITAleg. (to
bedepositedinthecollectionoftheNationalScienceMuseum(Nat.Hist),Tokyo).
Rema''ks. ThisspeciesissimilartoSgl・acllisGREsslTT,1934, fromtheRyukyus,
Japan, but canbeeasilydistinguished by the followingcharacteristicsin the female:
bodydarkredinsteadofbeingyellowishbrown,except forblackishportions;anten_
naesomewhat thickerandofdifferentcoloration;pronotumdevoidofapairofblack,
obliquestripeorspotanditspuncturessparserandlesssharplyoutlined;2ndand3rd
segmentsof hind tarsus thinnerand longer;3rdand4thabdominalsterniteswjthout
blackbandalongeachposteriormargin,etc.
Acknowledgements
IexpressmysinceregratitudetoMr.H. FuJITA(Editor ofGekkan-Mushj,Mu_
shishaLtd.,Tokyo)forofferingmethespecimen,andtoDr.S.-l.UENo(Department
of Zoology,NationalScienceMuseum(Nat. Hist),Tokyo) forhiskindnessofcrjtj_
catty readingtheoriginalmanuscript.
要 約
下村 徹: 台湾産Stran9alia属の1新和1. - Strangalia属に含まれるハナカミキリは,台湾から
今まで知られていなかった. しかし,中準民国台湾省台ヒvー系平」林付近で採集された本属に含まれる和
(1?) を所持しているので, 新種としてStrangalia filjitaiと命名し記破した. この種は, 琉球列島
('f91美大島, 、?中継本島) に分イ11する S gracilis GREss1TTに似ているが, 体は1'、、色部を除きほとんど
暗赤色であること,角」角がより太く, 異なった配色をすること, 前1110背板後方中央付近に1対の1'._.斑
がないこと, 後肢の第2・3付節がより細長いこと, 第3・4 板の先端部に'i、帯がないことなどの
特徴から容易に区別される.
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