Elyt''a,7lokyo,26(2):303-311,November15,1998 TwoNewApterousLathroblum(Coleoptera,Staphylinidae) fromtheTa-hsiiehShanMountainsinTaiwan YaSuaki WATANABE LaboratoryofEntomology,TokyoUniversityofAgriculture,Tokyo,156_8502Japan Abstract TwonewapterousLath1,obiumaredescribedandillustratedunderthe namesL. (s.str) talwanenseandL.(s.str)shaolaiense.Theformerwasobtainedfrom theupperhypogeanzoneonMt.Hsiao-hsiiehShanandthelatter fromthehumouszone onMt.Shao-laiShan,bothlyingontheTa-hsiiehShanMountainsinTaichungHsien, Taiwan. Noapterousstaphylinidsof thegenus Lathrobiumhavehithertobeen recorded fromTaiwan.ThroughthecourtesyofDr.Shun-IchiUENo,Ihadanopportunitytoex- aminetwoapterousLathrobiumwhichhadbeen found fromtheupperhypogeanand humouszonesoftwodifferentmountainsinTaichungHsien,Taiwan.0neofthem,ob- tainedonMt.Hsiao-hsiiehShan,belongstothegroupofLnomura1becauseofhaving non-transverseheadandelytraandinconspicuoussecondarysexualcharactersofthe abdominna1sternitesinthemale,whiletheother,obtainedonMt.Shao-1aiShanlying ontheTa-hsiiehShanMountains,belongstothegroupofL.pollensbacauseoftrans- verseelytraandremarkablesecondarysexualcharactersoftheabdominalsternitesin themale. Afteracarefulexamination,ithasbecomeclearthatthesespeciesarenewtosci- encebecauseofdisagreementwiththeknownmembersoftherespectivegroupsinthe secondarysexualcharactersoftheabdominalstemitesandconfigurationofthemale genitalorgan.Theywillbedescribedinthepresentpaper.Theho1otypesofthetwo newspeciestobedescribedaredepositedin thecollectionof theNational Science Museum(Nat.Hist),Tokyo. Beforegoing further,IwishtoexpressmyheartythankstoDr.Shun-lobiUENo, VisitingProfessoratTokyoUniversityofAgriculture, forhiskindnessinsupplyingme withtheinterestingspecimensandvaluableadviceonthepresentstudy. 1) ThisstudyissupportedinpartbytheGrant-in-aidNo.01041099forFieldResearchoftheMon- bushoInternationalScientificResearchProgram,Japan. 304 Yasuaki WATANABE Lathrobium(s.str)talwalte'tseY.WATANABE,SPnov. (Figs.1-2,4-5) Bodylength:7.9mm(fromfrontmarginofheadtoanalend);5.0mm(fromf「ont marginofheadtoelytra1apices). Bodyelongate,parallel-sidedandsubdepressedabove.Colourreddishbrownand shjning,withpalpi,apicalantennalsegmentsandlegssomewhatPale「. Headsuborbicular and gentlyelevatedmedially,slightly1onge「 than Male. Fig. 1. Lat/1,-obiu,n (s. str) taiwanense sp. holotype, from Mt. Hsiao-hsiieh nov., Shan, Ta-hs11ieh Shan Mts. in Taichung Hsien,Taiwan. Scale:1.0mm. NewApterousLath・,oblumfromtheTa-hsuehShans 305 broad(length/width=1.04),widestatposteriorthirdandmorestronglynarrowedpos_ teriadthan anteria withlateralsidesgentlyarcuate, frontalareabetweenantennaltu_ berclestransversely attenedandglabrousalongfrontalmargin,providedwjthacon_ spicuoussetiferouspunctureinsideeachantennaltubercle;surfacesparingly,coarsely andsetiferouslypuncture thepuncturesbecomingmuchfinerandmoreor lessru_ gcseinlatero-posteriorareas;eyesrelativelylargeandslightlyprominent, their1ongi_ tudina1diametermorethanahalfaslongaspostocularparts.Antennaeelongate,ex_ tendingtonearthemiddleofpronotum,twoproximalsegmentspolishe 3rdsegment Subopaque,theremainingsopaque,1stsegmentrobustandstronglydilatedtowardsthe apex,morethantwiceaslongasbroad,2ndconstrictedatthebase,about15timesas longasbroad,but lessthanahalfaslongasandmuchnarrower(2nd/1st=0.73)than 1st,3rdalittledilatedapica morethant5timesaslongasbroad,somewhatlonger (3rd/2nd=1.13) thoughas broad as2n 4th distinctly longer than broad(length/ width=1.60),alittleshorter(4th/3rd=0.89)andslightlynarrower(4th/3rd=0.86)than 3rd,5thto8thequal inbothlengthandwidthtooneanother,eachdistinctlylonger thanbroad(length/width=1.40),somewhatshorter than(eachof5thto8th/4th=0.88) thoughasbroadas4th,9thto11thequalinwidthtooneanother,9thsomewhatlonger thanbroad(length/width=1.36),slightlyshorterthan8th(9th/8th=0.97),10thalittle longerthanbroad(length/width=1.20),slightlyshorterthan9th(10th/9th=0.88),11th fusiform, about twiceas longasbroad,considerably longer than 10th (11th/10th= 1.83),subacuminateatthetip. Pronotumoblongandconvex,apparentlylonger thanbroad(length/width=1.19), distinctly longer (pronotum/head=1.17)andslightlybroader (pronotum/head=1.02) than hea widestatanterior fourthandmorestronglynarrowedposteriadthanante- riad;lateralsides feeblyarcuateindorsalview,anteriormarginsubtruncate,posterior margin slightly emarginateatmiddle, anterior angles obtuseandnot visible from above,posterioranglesrounded;surfacecloselycoveredwithcoarsepunctures,bear- inganarrowsmoothlongitudinalspacealongthemedianline.Scutellumsubtriangular andsomewhatconvex,providedwithafewminutesetiferouspuncturesonthesurface. Elytrasubtrapezoida1andsubdepressedabove,somewhat dilatedposteria slightly longerthanbroad(length/width=1.02),distinctlyshorterthan(elytra/pronotum=0.86) thoughasbroadaspronotum;lateralsidesvery feeblyarcuate,posteriormarginemar- ginateandforminganobtusere-entrantangleatthemiddle;posterioranglesbroadly rounded;surfacedensely, roughlyandsetiferouslypuncturedallover.Hindwingsde- generatedtominutelobes.Legsrelativelyslenderandmoderatelylong;profemurre- markablythickened,thoughstronglyconstrictednearthebaseandexcavatedinapical haltontheinner face,sothattheanteriorpartoftheexcavation formsasubtriangular blunttooth;protibiadilatedapica hollowedinbasal half on theinner faceandpro- videdwithfiveorsotransverserowsofcomb-likeyellowishsetaewithinthehollow; meso-andmetatibiaenormal;1st to4thprotarsa1segmentsstronglywidened;meso- andmetatarsi thin. Abdomenelongate,graduallywidenedtowardsthe7thsegmentandthenabruptly 306 Yasuaki WATANABE narrowedfromthe8thtoanalend,3rdto7thtergiteseachtransverselydep「eSSedalon9 thebaseandmoderatelycloselycoveredwithfineaciculatepuncturesandb「oWnSih pubescence;8thsterniteV-shapedlyexcisedattheapex;7thsternitealsoshallowlyand broadlyemarginateatthemiddleofposteriormargin. Fjgs.2_3. AbdominalstemitesinthemaleofLath1・obium(s.str)spp;L.(s.str)talwanenseSP nov. (2), andL.(s.str)shao/alensespnov.(3). Scale:0.5mm. Figs.4-6. MalegenitalorganofLat1/,・obiu,n(s.str)talwanensesp nov;dorsalview(4),lateral view (5),andventralview(6). Scale:1.0mm. NewAptcrousLat111・chiff,nfromtheTa-hsLichShans 307 Genitalorganelongateandwellsclerotizedexcept formembraneousventralside ofmedian lobe;medianlobesomewhatshorter andnarrower than fusedparamere, widest near basal fifth and thenabruptly narrowedbasadandgradually so apica thoughnearlyparallel-sidedinapicalhalf,withventral scleriteelongate,widestnear themiddleandthenmarkedlynarrowedtowardstheacutelypointedbaseandslightly narrowedtowardstheapicaltipwhichistruncated.Fusedparamereelongate,strongly curveddorsad inapicalhalf,apicalpartdividedintotwolobes,eachofwhichisdi- latedintoasecuriformapicalportionasseenfromdorsalside. Female. Unknown. Type specimen. Holotype: Mt. Hsiao-hsi.ieh Shan, Ta-hsiieh Shan Mts., , TaichungHsien,Taiwan,15-VI-1989,S.UENoleg. Distribution. Taiwan. Rema1・ks. ThisnewspeciesbelongstothegroupofL nomura1becauseofthe longelytra, and canbereadily distinguished from the other members of the same groupbythesmallerbodyandthedifferentconfigurationofmalegenitalorgan. Bionomics. The type specimenwas dugout fromamuddy screedeposited under asteep cliff at the northern side of Mt. Hsiao-hsiieh Shan at an altitude of 2,630m. Etymology The new specificnameisderived fromTaiwan, inwhich liesthe typelocality“Mt.Hsiao-hsiiehShan”. LathrobiuM(s.str)shaolaie1'seY.WATANABE,sp nov. (Figs3,7-10) Bodylength:7.9mm(fromfrontmarginofheadtoanalend);4.1mm(fromfront marginofheadtoelytralapices). Thisnewspeciescanbedistinguishedataglancefromtheprecedingspeciesby thetransverseheadandelytra,whichagreewiththecharacteristicsofthegroupofL. pollens. Differing from themembersof thespecies-group inconfigurationofsec- ondarysexualcharactersofabdominalsternitesandmalegenitalorgan. Bodyelongate,subpara11e1-sidedandsomewhatdepressedabove.Colourreddish brown andshining,with two apical abdominal segmentsand legsdark yellowish brown. Male. Headsubtrapezoida1andmoderatelyconvexmedially,alittletransverse (wjdth/1ength=1.13),widestatbasal fourthandmoredistinctlynarrowedanteriadthan posteriad;lateralsidesgentlyarcuate, frontalarea attenedandglabrousbetweenan- tennal tubercles,providedwithalargesetiferouspunctureinsideeachantennaltuber- cle;surfacesparinglycoveredwithdistinctsetiferouspunctureswhichbecomemoreo「 lesscloserandfinerthaninlatero-posteriorareas,andbearingasmallsmoothve「teXa1 area;eyessmallandnearlyflat,theirlongitudinaldiameteraboutone-thirdaston9as postocularpart. Antennaeelongate,extendingtothemiddleofpronotumand not thjckenedapjcad,twoproximalsegmentspolished,3rdsegmentsubopaqueandthe「e- 308 Yasuaki WATANABE Fig. 7. af/1,-o llm (s. str) s(cid:0)o/a1ens sp. nov., holotype, fromMt. Shao-1ai Shan, Ta-hsiieh Shan Mts. in Taichung Hsien, Taiwan. Scale:1.0mm. mainingsopaque,1strobustandstronglydilatedapicad, twiceaslongasbroa 2nd constrictedatthebase,about15timesaslongasbroadbutahalfaslongasandre_ markablynarrower(2nd/1st=0.70)than1st,3rdsubequa1to2ndinboth lengthand width,4thand5thequaltoeachotherinbothlengthandwidth,eachsomewhatlonger than broad (length/width=1.07)andslightlyshorter than (4th and 5th/3rd=0.75) thoughasbroadas3r 6thto10thequaltooneanotherinbothlengthandwidth,each alittlelongerthanbroad(length/width=1.20)andaslongasthoughslightlynarrower NewAptcrousLa111,・obitmlfromtheTa-hsiichSI、ans 309 (eachof6thto10th/5th=0.89) than5th,11th fusiform,morethan twiceas longas broadandmuch longer (11th/10th=1.67)butslightlynarrower (11th/10th=0.92)than 10th,subacuminateattheapex. Pronotumnearlyoblong,apparentlylongerthanbroad(length/width=1.13),alit- tle longer (pronotum/head=1.30) and slightly broader (pronotum/head=1.02) than head,widestbehindanterioranglesandslightlynarrowedposteriad; lateral sidesal- moststraightindorsalviewexceptneartheareasofanteriorandposteriorangles,an- teriormargingentlyrounded,posteriormarginsubtruncate,anterioranglesobtuseand notvisible fromabove,posterioronesrounded;surfacemorecoarselyandmorenu- merouslypuncturedthanonheadexcept foranarrowsmoothmedianlinethroughthe lengthofpronotum.Scutellumsmallandsubtriangular, providedwitha fewminute setiferouspuncturesonthesurface.Elytranearlytrapezoidal,slightlydilatedposteria alittletransverse(width/length=1.10)anddistinctlyshorter(elytra/pronotum=0.80) thanandalmostasbroadaspronotum;lateralsidesslightlyarcuate,posteriormargin emarginateatthemiddle;posterioranglesobliquelytruncated;surfacedenselycovered with much coarser punctures than thoseonpronotum. Hind wings degenerated to minutelobes.Legsrelativelyshort;profemurandprotibiasimilarinstructuretothose oftheprecedingspecies. Abdomenelongate,gentlywidenedtowards7thsegment,andthenabruptlynar- rowedfromthe8thtoanalend;3rdto7thtergiteseachtransverselydepressedalong thebaseasin theprecedingspeciesandmoderatelycloselycoveredwithsuperficial puncturesand finebrownishpubescence,8thtergitemoresparinglyandmorefinely puncturedthanontheprecedingtergites;8thsternitesubtriangularlyandasymmetri- callyexcisedatapexanddeeplylongitudinallydepressedinfrontoftheexcisionalong themedianline,surfaceofthedepressionprovideddenselywithshortrigidblackish setae;7thsternitealsoarcuatelyandasymmetricallyemarginateatthemiddleofposte- riormarginandlong-ellipticallydepressedatthemiddlebeforetheemargination,sur- faceofthedepressionsmooth,6thsterniteprovidedwithashallowhorseshoe-shaped depressionatthemiddlejustbeforeposteriormargin,surfaceofthedepressionsome- whatcoarselyasperate;5thsternitealsowithasimilarsmallasperateareatothatof 6thsterniteatthemiddleinfrontofposteriormargin. Genitalorgannearlyspindle-shaped.Medianlobeconsiderablylongerthanfused paramere,withventralscleritewidestnearthemiddle,muchstronglynarrowedto- wardsthepointedapexthantothebase,andsomewhatcurvedtotherightsideinapi- calhalf.Fusedparamereasymmetrical,abruptlyconstrictednearapicalthirdandap- parentlynarrowedtowardsthepointedapexwhichissomewhatcurvedtotheleftas seenfromdorsalside,distinctlyemarginateinapical fourthinprofile. Female. Unknown. Typespecimen. Holotype: Mt.Shao-1aiShan,Ta-hsiiehShanMts.,Taichun9 , Hsien,Taiwan,16-VI-1989,S.UENoleg. Remarks. ThepresentnewspeciesmaybelongtothegroupofL. pollensbe- causetheheadandelytraaretransverseandabdominalsterniteshaveconspicuousSeC- 310 YasuakiWATANABE 10 Figs.8-10. MalegenitalorganofLathrobium(s.str)shaolalensesp nov;dorsal view(8),lateralview (9),andventralview(10). Scale:1.0mm. ondary sexual characters. Itcanbereadily distinguished fromthemembersof the groupbydifferentsexualcharactersoftheabdominalstemitesinthemaleanddiffer- entconfigurationofmalegenitalorgan. Bionomics. Theholotypewasdugout fromthesoil beneathdead leaves de- positedinagullyinadeciduousbroadleaved forestonMt.Shao-1aiShanatanaltitude of2,030m. Etymology. Thenameofthepresentnewspeciesisderivedfrom“Mt.Shao-lai Shan”,thetypelocality. 要 約 渡辺泰明:台湾産の後翅の退化したナガハネカクシ属の2新種 (甲虫目, ハネカクシ 科). - 台湾からはこれまで, 後翅の退化したナガハネカクシの仲間が知られていなかった. 私は最近, 上野俊一博士が1989年6月に台湾の台中県大雪山系の二つの山で採集された, この グループに含まれる2種を検討する機会を得た. これらはいずれも地下浅層から掘り出された が, 雄の腹部第二次性徴および交尾器の形状がこれまで知られた種のものとは一見して異なっ ており, 新種と判断されたので, 下記のとおり命名, 記載した. 1. Lathrobium(s.str)taiwanenseY.WATANABE,sp nov. 本種は, 大雪山系小雪山の標高2,630mほどの地点にある急斜面の岸壁の下に堆積した, 土 の多い岩錐の下端部から掘り出されたもので,頭部および翅鞘がいずれも幅よりも長いことで, 日本に分布しているオオコバネナガハネカクシ種群に含められる. しかし体が小型で, 雄の交 NewApterousLath,obiu,nfromt1、eTa-hsiiehShans 311 尾器の側葉は末端域が二裂し, しかもそれぞれの先端部分が斧状を呈する特異な形状で, この グループの他の極から容易に区別できる. 2. Lathrobium(s.str)shaolaienseY.WATANABE,sp nov. 本種は, 大雪山系稍来山の標高2,030mほどの落葉広葉樹林内の, 凹地か小構に溜まった落 ち葉の下の石混じりの土の中から掘り出されたもので, 頭部および翅鞘のそれぞれが長さより も幅が広いことで, 日本に分布しているコバネナガハネカクシ種群に含められる. しかし, 雄 の腹部に表われる第二次性徴の形状および交尾器の中葉が側葉よりいちじるしく長く, 後半は 急に狭まり, その部分が湾曲していることなどで, このグループの既知種から容易に区別でき る. References NAKANE,T., l955. Newor little-knownColeopterafromJapanand itsadjacentregions,XII. Scient. Rcpt.SaikyoUniv., at.Sci.&Liv.Sci),2A:2'1 'l2[incl.pls2-3],pi t. SHARP,D., l889. TheStaphylinidaeofJapan. Ann.Mag nat.Hist.,(6),3:249-267(part6). SHIBATA, Y.,1973. Preliminarycheck listof thefamilyStaphylinidaeofTaiwan(Insecta:Coleoptera). AnnualBull.Nichid、a1Sanko,(16):21-28. WATANABE,Y.,1992. NewspeciesofthegroupofLath''obiumpo11ens(Coleoptera,Staphylinidae)from westernHonshu,Japan. Elytra,「okyo,20:189-196. - l998. Fivenewspeciesof the Lath,obium(s.str) nomura1group (Coleoptera, Staphylinidae) fromJapan. Ibid.,26:85-98. Elytra,'「otkyo,26(2):311-312,November15,1998 ListoftheHostFungioftheJapaneseCiidae(Coleoptera),III Makoto KAWANABE BioindicatorCo.,Ltd.,Takada3-l6-4,Toshima-ku,Tokyo,171-0033Japan Daedaleopslsconfragosa[Chamidareamitake] Cismppomcus,Csenafopifosus,Sufcacis ms, 0ctotemnusgfa rlctlfus, 0./apom cus,0. laminifrons,0.parvulus Daedaleopsisstyracina[Egonokitake] meart on c 01 Daedaleopsisporte、,is[Senbeitake] Eu)cestocisbicornutus