Notes on the Lepturine Genus Pidonia (Coleoptera, Cerambycidae) from East Asia : VIII. A New Pidonia from the Subalpine Zone of Chubu District, Honshu, Japan

6 Pages·2001·6.8 MB·English

by  Kuboki, M

E、l t,-a,「10k、,o,29(l):23-28,June15,200]
NotesontheLepturineGenusPidonla(Coleoptera,Cerambycidae)
fromEast Asia
Vm. ANewPidonlafromtheSubalpineZoneofChubuDistrict,
Honshu,Japan
Mikio KUBoKI
47-15,0hara1-chemo,Setagaya-ku,Tokyo,156-0041Japan
Abstract AnewspeciesofPido川arelatedtopchat,・oisdescribedfromthesub-
alpinezoneofChtibuDistrictunderthenameof 11ayakawai.
ThelepturinegenusPidonlaMULsANTconsistsof150speciesdistributedoverthe
temperatezoneoftheHolarcticRegion.MostofthemareknowntooccurinEastAsia.
Uptothepresent,56speciesofthegenusPidonlahavebeenrecordedfromJapan,par-
ticularlyrichinspeciesinthemountainousareasofChubuDistrict.Forinstance,29
species occur in Azumi-mura, Minamiazumi-gun,Nagano Prefecture, which is a
mountain villagewithanareaofabout400squarekilometers (KuBoKl,1998). The
presentpapercontainstheresultofmystudyonthespeciesofthegenusPidonlaob-
tainedinthemountainousareasofChubuDistrictwithadescriptionofPidonla(P)
hayakawain.sp. Theverticaldistributional rangeofthisspeciesisclarifiedandthe
correlationof thedistributionpatternwithvertical vegetational zonations isshown.
TheholotypedesignatedinthisstudyispreservedinthecollectionoftheNationalSci-
enceMuseum(Nat.Hist),Tokyo.
Beforegoing further,IwishtoexpressmyheartythankstoMessrs.H.EBIHARA,
S.FURIHATA,M.IMURA,S.KATo,T.MIKAGE,S.TAKEcH1andS.TsUYUKl fortheirkind
offerofvaluablespecimens.
PfdoM'a(PfdoM'a)1laya1aP'atKUBoKl,sp
nov.
[Japanesename:Shinshu-hime-hanakamikiri]
(Figs.1-5)
Male. Body medium-size elongate,slightly taperedapicad. General colour
reddish fulvoustoblack and furnishedwithpale fulvouspubescence. Head reddish
fulvous;vertexdarkened;mouthpartsfulvousexcept forreddishbrownapexofeach
mandible;templesreddishbrown;antennaereddish fulvous,firstandsecondsegments
reddish fulvous, thirdand followingsegmentsinfuscateattheirapices.Prothorax red-
24 MikioKuBoK
dish fulvouswithapairofblackportionswhichbroaden fromlateralpart todisc.
Scutellumreddish fulvous.Legsalmost fulvous;eachapexofmidandhind femora
faintlydarkbrown;apexofeachtarsusinfuscate;clawsdarkbrown.Elytrayellowish
fulvous with blackmarkings. Elytra1markings:- Sutural marking faintly present;
basalmarkingnarrowlypresent;1atero-basalandlatero-medianmarkingssmall;apical
bandbroadlypresent. Ventral surface: - Hea thoraces andabdomen fulvous; first
andsecondsternitesblack;meso-andmetasternablack.
Headacrossthemiddleofeyes1.17timesaswideasbaseofprothorax; terminal
segmentofmaxillarypalpusbroadenedapicallywithstraightoutermargin; temples
stronglyproduce convergentandabruptlyconstrictedatneck; fronssubverticaIand
transverse,coveredwithcoarsepunctures,bearingafinebutdistinctmedianlongitudi-
nal furrow extending backwards; vertex fairly at, weakly convex above, coarsely
punctateandsparselyclothedwithfinepubescence.Eyesrelativelyprominent,moder-
ately facetedandstrongly emarginateatmiddleofinternalmargins. Antennaerela-
tively long andslender; apical onesegmentsurpassingelytral apices; comparative
lengthofeachsegmentasfollows:5>3=1十2=6>4.
Prothorax1.13timesaslongasbase,dullyangulate-prominentlateradjustbefore
themiddle,deeplyconstrictedbothanteriadandposteriad;breadthacrossprominent
1
Figs. 1-2. Pido,fia(Pidonla)hayaka、、・alKuBoKl,sp nov.,fromHonzawaSpa,NaganoPrefecture;1,6;
2.
NotesonPido'fiafromEastAsia,Vm 25
e
3
Figs. 3-4. Pidonla(Pidonla)ha),aka、tatKUBoKl.sp nov., . - 3, Laststernite; 4,median lobeof
malegenitalia,lateralview;c,endophallus; diverticulum.Scale:0.3mm.
portionsslightlynarrowerthanbase;discofpronotumconvexabove,finelyandclosely
punctate, sparsely clothed with fine pubescence. Scutellum small and triangular,
slightlylongerthanbroa bearingthinpubescenceonthesurface.Elytra2.70timesas
longasbasalwidth,graduallynarrowedposteriadandseparately truncateat apices;
surfacesparselyanddeeplypunctate,sparselyclothedwithsubappressedpubescence;
interspacebetweenpuncturesnarrowerthandiameterofeachpuncture.Legsrelatively
slender,clothedwithshortpubescence; femoraclavate;hindfemoranot reachingely-
tra1apices; tibiaelinear,straight; tarsidenselyclothedwithshortpubescenceonthe
undersurface.
Abdomen elongate and gradually narrowed towardsapex; apex of last tergite
roundandshallowlyemarginateatmiddle,bothlateralanglesobtuse;apexoflastster-
nitetriangularlyemarginateatmiddle,bothlateralanglessomewhatangular(Fig 3).
Genitalia: - Medianlobefalcateinlateralview,relativelyslender,stronglycurved
ventradandsharplypointedatapex(Fig4);laterallobesslightlyshorterthanmedian
lobe,eachapexproducedandsparsely furnishedwithrelativelyshort terminalhairs;
endopha11uslongandfurnishedwithapairof falcatesclerites;diverticulumrelatively
short and lanceolate.
Length:9.7-7.5mm,breadth:2.5-1.9mm.
Female. Bodymorerobustandblackmarkingsmoreenlargedin femalethan
inmale. Apexofeachmaxillarypalpussometimesdark brown. Apex ofeachmid
femur infuscate;apicalhalfofeachhind femurblack.Prothoraxalmostblackexcept
forreddishfulvousapexandbase.Elytralmarkings: - Suturalmarkingdistinctlypres-
ent,theapexofsuturalmarkingbroadenedtriangularlyinapicaleighthofelytra;basal
markingdistinctlypresent; latero-basa1markingsmall, linear-oblong;1atero-median
markingverysmall,oblong;1atero-apicalmarkinglarge,deltoid;apicalbandbroadly
present.Ventralsurface: - Abdomenalmost fulvous; first tothirdsternitesdarkened
laterad;meso-andmetasternablack.
Head1.04timesaswideasbaseofprothorax.Antennaerelativelyshort,barely
26 MikioKuBoK]
reachingelytra1apices;comparativelengthofeachsegmentas follows:5>1十2>3>
6>4.
Prothorax1.06timesaslongasbase.Elytra2.51timesaslongasbasalwidth,al-
mostparallel-sidedandseparatelysubtruncateatapices.
Apexoflasttergitesubtruncate,shallowlyemarginateatmiddle;apexoflastster-
niteround.
Genitalia:- Spermathecalightlysclerotized,relativelyswollen,widestatmiddle,
sharplynarrowedtowardsapexandgraduallynarrowedtowardsbase;cornustrongly
Curvedatapicalpart; ramusprojectedangularlywithrelativelyshortspermathecal
9land;collumtruncatewithout transversecrease;vaginagraduallyenlargedbasad;
vaIvifernarrowedapicad;apicalsegmentofcoxiterelativelylarge,stronglysclerotized
attheinnerpart,obtuselypointedattheapexandfurnishedwithsensorypubescence;
stylusabaxia11yunitedtothelateral faceofcoxitebroad,sclerotizedexcept forapex,
slightlyenlargedapicad,withlongandsparsehairsintheterminalarea.
Length:10.8-8.0mm,breadth:2.9-2.0mm.
Typeseries. Holotype: HonzawaSpa,2,200malt.,Mimamimaki-mura,Mj_
,
namisaku-9un, NaganoPrefecture, 28-VII-2000, M. KuBoKl leg.Paratypes: 7
5 ,Samedataasfo「theholotype; le,1!,samelocality,19-VII-1981,H.EBIHARA,
leg;2 Shirakomaike,2,150malt.,Yachiho-mura,Minamisaku-gun,Naganopref.,
,
17-VII-1990,T.MIKAGEleg;4 2 MugikusaPass,2,200malt.,Yachiho_mura,
, ,
14-VII-1984,S.FuRIHATAleg;1 0kanbasawa,Ashiyasu-mura,Nakakoma_gun,Ya_
,
manaShiP「ef.,31-VIl-1984,S.TAKEcHI leg;1e,2 ,samelocality,23_VII_1995,
M.KuBOKIleg;3 ,2 ,samelocality,1,650-2,100malt.,31-vIl~1_vIII_19g5,
M.KuBOKI leg;2 2 Mt.Senjogatake,2,050-2,350malt.,Hase_mura,Kamj_
, ,
ina-9un,Na9anoPref.,28~31-VII-1971,M.KuBoKlleg;6 4 ,samelocality,
,
30~31-VII-1972,M.KuBOKIleg;1 Mt. 0ntake,0utaki-mura,Kiso-gun,Nagano
,
P「of.,29-VII-1998,S.KAToleg; Ie,1!,Mt.Norikuradake,27~28-VII_1985,s.
TSUYuKI leg;2 Sengendaru,Takane-mura,One-gun,GifuProf.,24_
vI_1gg7, s
,
KATo le9.; 1 1!,samelocality,2-VII-1994,S.KAToleg;1e, le,Njgorjgospa,
,
Osaka-oho,Mashita-gun,GifuPref.,10-VII-i988,S.FURIHATAleg;1e,1!,Hjwada_
kO9en, 2-VII-1988,S.FuRIHATAleg; I Shimashimadani, Azumi-mura, Mjnamj_
,
aZumi-9un, Na9ano Prof., 3-VIII-1970, M. KUBoKl leg; Ie, same locality,
30-VII-1973, M. KuBOKl leg; I Kamikochi-Norikurasuper rindo, 1,665malt.,
,
Azumi-mura,Minamiazumi-gun,NaganoPref,,5-VII-1998,M.KUBoKlleg;1e,sh1_
「ahOneSpa,Azumi-mura,16-VI-1991,S.FURIHATAleg;12 5 Azumj_mura,
27-VI-1987,S.FuRIHATAleg;5 4 Migimatadani,Kamita, kara-m, ura,Yoshjkj_
, ,
9un,GifuPref.,30-VII-1999,M.KuBoKlleg;3 ,4 , Amoupass, 1,650malt,
Kawai-mura, Yoshiki-gun,GifuPref., 22-VII-2000, M. KuBoKl leg; 8 3
Shaka「indo,1,100-1,300malt.,Shiramine-mura,Ishikawa-gun, Ishikawaprof.,, 5~6_,
VI-1999,M.IMURAleg;4 ,19,samelocality,1,100malt.,28-VI-1999,M.IMURA
Ie9・;2 ,Samelocality,1,500malt.,5-VII-1999,M. IMURAleg;1 ,same1ocaljty,
1,500malt・,11-VII-1999,M. IMURAleg;19,samelocality,26-V-
1990, T. MIKAGE
NotesonPlefo川afromEastAsia,VIIi 27
Fig. 5. Vertical distributionofPldo川ahayaka、、,a1KuBoKl,sp nov.,inconnectionwith verticalvegeta-
tionalzonesofHonshu,ShikokuandKyushu. - A,Climaxofalpinedesert,grasslandandscrub
(includingPimtspu1mlaformation);B,climaxofconiferforest(Ables-Piceaformation);C,climax
ofdeciduousbroadleavedforest(tagusc,・enataformation);D,climaxofintermediateconiferforest
(Tsugasteboldiformation);E,climaxofevergreenbroadleavedforest(Castanopslsctlspidataforma-
tion).
leg.;1e,samelocality,28-V-1995, M. IMURAleg;19,samelocality, 14-VI-1997,
M.KUBoKIleg.
Distribution. Japan(centralHonshu).
TheverticaldistributionofthisspeciesisshowninFig 5 inconnectionwith the
vertical vegetational zones ofJapanexcludingHokkaido. Its distributional range is
verticallylimitedtotheupperpartoftheFtaguszoneandevergreenconiferzone.
IexaminedanumberofspecimensbelongingtothechatrogroupofthegenusPi-
donlafromthesubalpinezoneoftheYatsugatakeMts.,NaganoPrefectureandconsid-
eredthattheywereclassifiedintotwogoodspecies,thatis,F)chairoTAMANuKIandF)
hayakawaisp nov.Similarly,thesetwospecieswerecollected fromAzumi-mura,Mi-
namiazumi-gun,NaganoPrefecture.
Flightperiod. MaytoAugust.
Flower records. Rhododendron fauriae, Solbus commix;ta, Hydrangea
s , petz'ofarzs, ctim'dfa ofom1'ｽta Cormf cont1'oversa ocrcaudaftM1, tl加ssp., nM-
cusdioicus,Filipendulakamtschatica.
Remarks. Thisnewspeciesresembles i)cha1lo TAMANUKlbutmay bereadily
distinguished from it by the truncated apicesof the elytra, theslender andsharply
curvedmedianlobeofmalegenitalia, thelongerandslendererdiverticulumofmale
28 Mikio KuBoKl
genitalia,theangularlyprojectedramusofspermathecainthefemaleandthetriangu-
larlyanddeeplyemarginatelaststernitewithobtuselateralanglesinthemale.
ThisnewspeciesiscloselyalliedtoPftalcataoccurringinKyushu,Shikokuand
ChugokuDistricts.ThetwospeciesPfalcataandPhayakawai formaspecies-group
inthesubgenusPidonias.str.,whichismainlycharacterizedbythefollowingcombi-
nationofmorphological features:prothoraxblackexcept for fulvousapexandbase;
median lobe of male genitalia falcate in lateral view, relatively slender, strongly
curved;apexoflaststerniteofmaletriangularlyemarginateatmiddle.
Etymology. ThespecificnameofthisnewspeciesisgivenafterMr.Hirofumi
HAYAKAwA, Matsumoto-shi,NaganoPrefecture,whoisoneofthemost famous re-
searchersoftheinsectsintheShinshudistricts.
要 約
窪木幹夫:束アジア産ヒメハナカミキリ属の知見. vIII.本州中部地方の亜高山帯から発見さ
れたPidon,a属の1新種. - 本州中部地方のブナ帯上部から亜高山帯で採集されたPido,,Ia
属の新種, Rhayaka、、,a,シンシュウヒメハナカミキリを記載した. 本種は, 従来 chai,-o ヤノ
ヒメハナカミキリと混同されてきたが, 上翅端が切断状であること, 雄交尾器の中葉片が細く,
より強く湾曲すること, 雄交尾器の中葉片のうち陰茎に付着する盲管がより長く, 細いこと,
雌の受精嚢の突出部が角張ること, 雄の腹板末端節の側縁角が丸みを帯び, 中央が三角形に深
く切れ込むことなどで区別できる. 八ヶ岳の亜高山帯針葉樹林での調査では, c/fall・o種群に所
属する2種のヒメハナカミキリ, Flc/fat,-oTAMANuKl とi)ha、・aka、、、a1spnov.が採集された. 長野
県南安曇村での調査でも, これら2種が採集された. 中部地方に分布する /ayaka、,,a,は, 中
国地方西部, 四国, 九州に分布する falcataとともに, Pido,fia亜属のなかで一つの種群を構
成する. なお, 種名は長野県松本市扉在住の昆虫研究家早川広文氏に献名した.
References
KUBoKl, M.,1996. NotesonPl'do,11'ac/fat・,oTAMANUKl (Coleoptera,Cerambycidae). GOA,'a'1-'misfit',
「okyo,(303):6-13.(InJapanese)
- 1998. NotesonthegenusPidonlafromAzumi-mura.1,1:theSchoolBoardofAzumi-mura(ed),
Azumtsonshi,1,NaturalHistory,639-647.Azumi-mura,Nagano.(InJapanese)
TAMANUKl,K.,1942. FamilyCerambycidae,2,Lepturinae. F◆alulaNippo川cd,10(8-15):i十l-8十1-259.
Sanseido,Tokyo.(InJapanese)