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Apterous Lathrobium (Coleoptera, Staphylinidae) from the Kii Peninsula in Japan : 3. Group of Lathrobium brachypterum PDF

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Preview Apterous Lathrobium (Coleoptera, Staphylinidae) from the Kii Peninsula in Japan : 3. Group of Lathrobium brachypterum

E:/、・f,・a,Tok、・),34(1):47-62,May20、2006 ApterousLath1,obium(Coleoptera,Staphylinidae)from theKiiPeninsulainJapan 3.Groupof !f/?''o/)ltfn1フf1'acネvpfe''t' Yasuaki WATA1、ABE LaboratoryofInsectResources,TokyoUniversityo、fAgriculture、Atsugi,Kanagawa243-0034Japan Abstract SevenapterousspeciesofthestaphylinidgcnusLat/1''obiit1'1fromthe KiiPeninsulaincentralHonshu.Japanarcdealt、、,ith.Allthespeciesbelongtothe9「cuP ofL(s.sir)bl-ac/1、l)te1-t1l11;sixofthemarcdescribedasno、vtoscienceunderthenamesL. (ssir)ko、・asal11l111.L.(s.str)o/1to/1e11.・le.し.(s.str)1se11se,L.(s.str)nankiense,L.(s.st「.) k111o/u川elseandL.(s.str)、、,al,a111ata川tm,andtheremainingonedeterminedasL.(s.st「.) l111t.,;tielisrecordedwithcollectingdata. ThemembersofthegroupofLat111o/)111mb1-(1ch、pte1・urnaresimilarinfaciesand colourtothoseofthegroupsofL.shingo11andL.po11e11s.Theyare,however,distin- guishablefromthefattersbytherelativelysmallerbodyandsecondarysexualcharac- tersofabdominalsternitesinthemale,the8thsterniteofwhichistruncateorslightly emarginateatthemiddleofposteriormargin. AsthememberofthegroupofLbr(1chypte1-uni,onlyonespecies.L masao1,has hithertobeenreported fromthe Kii Peninsula(WATANABE,1999,p ie9). Fo11oWin9 thetwopreviouspapers(WATANABE,2005a,b),IamgoingtodescribethenewSpecies belonging to thegroupof L bl・aclypte1・uln inaddition to thecollectingdataof L masao1. Beforegoingfurther,IwishtoexpressmyheartythankstoDr.Shun-lobiUENo, visitingProfessoratTokyoUniversityofAgriculture, forhiskindnessingivingme valuableadviceonthepresentstudy.DeepgratitudeisalsoduetoDr.ToshioKISHI- MoTo,JapanWjldlifeResearchCenter,Messrs. IsaoMATOBA,WakayamaPrefeCtu「al Museum ofNatural History, Hiroki SAT0, Matsuidamachi, Gunma, and Hideyuki YoKozEKl,Yokkaichi-shi,Mie, fortheirkindnessinsupplyingmewiththespecimens usedinthisstudy,andMessrs.ArataIsHlzUKA.JapanWildlifeResearchCenter.Junno- sukeKANToH, LaboratoryofInsectResources,TokyoUniversityofAgriCultu「e, fo「 theirassistanceintakingthephotographsinsertedinthispaper. Lat/1robium(s.str.)masaoiY.WATANABE,1999 [Japanesename:Kii-himckobanc-nagahanckakushi] Lath/・obilm1(s.str),11asao1Y.W、T、NABE,l999.Ent.Rev.Japan、Osaka,54:109-112 4S YasuakiW/、T^N^Ill ThisSpecieswasdescribedbyWATANABE(1999,p.109)basedonsixmaleand fOu「femalespecimensobtainedonMt.Wasamata-yama inNaraPrefecture. since then,thisspecieshasnotbeenreporteduntilnowfromotherlocalitiesofJapan.Itjs newtothefaunaof MiePrefecture. S eel'nons e_、-emfnee/. 2 2 Hirakura, Mie Pref., Honshfi, Japan, . , 24-III-1992,Y.WATANABEleg. 1sfr!0zlflon. Japan(centralHonshu:KiiPeninsula). Lat/1「obium(S.str.)koyasallumY.WATANABE,spnov [Japanesename:Koya-himckobane-nagahanckakushi] (Figs.1、2,8-10) Bodylength: 6.4-7.6mm(fromfrontmarginofheadtoanalend);3.2_3.4mm (fromfrontmarginofheadtoelytralapices). Bodyelongate, nearlyparallel-sidedandsubdepressedabove.Colour reddjsh browntobrownishblackandmoderatelyshining,withmandiblesandantennaebrown_ ishre palpi,labrum,legsandtwoapicalabdominalsegmentsbrownishyellow. ThepresentnewspeciesmaybeplacednearLmasao1fromMt.Wasamata_yama ofNaraPrefectureinviewofgeneralconfigurationofthemalegenitalorgan,but js distinguishablefromitbythefollowingpoints: Maleand female. Headsubquadrate,lesselevatedmediallythaninL masao1', Slightlytransverse(width/length=1.03)oraslongasbroad,widestatposterjor fourth andmoredistinctlynarrowedanteriadthaninLmasao1;lateralsidesgentlyarcuate; Su「faceSlightlymorestronglyandmorecoarselypuncturedthaninLmasao1'though Cove「edwithsimilarmicroscopicgroundsculpturetothatofL nlasa()1; postocular Pa「tIon9erthaninLmasao1,about3.14timesaslongaslongitudinaldiameterofeye. Antennaeelongate,extendingalittlebeyondthemiddleofpronotumandnotthjck_ enedtowardstheapicalsegment, twoproximalsegmentspolished, theremajnjngs opaque, 5thto 10thsegmentsmoreor lessmoniliform,andsimilar jnartjculatjonto thoseof ,71asao1. . P「onOtum similar inconfiguration tothatof L nlast1o1,apparently longer than b「cad (length/width=1.23), distinctly longer (pronotum/head=1.38) and a ljtlle b「oader (Pronotum/head=1.10) than head; surface sparingly and slightly more COa「SelyPuncturedthaninLnlasao1exceptforanarrown、ediansmoothspaceElytra Subt「aPezoida1,somewhtatmorestronglydilatedposteriadthaninL masao1, appar_ entlyt「anSverse(width/length=1.19),distinctlyshorter(elytra/pronotum=078)buta littleb「oader(elytra/pronotum=1.14)thanpronotum;lateralsidesnearlystrajght,pos_ te「iOrmarginbroadlyemarginateatthemiddleasinL masaot;surfacesparjnglyand me「e「eu9hlypuncturedthaninLmasaot.Legsmoderatelylong,profemora,protjbjae andprotarsisimilarinstructuretothoseofthemembersofthisspecies_group Abdomeneton9ate,somewhatdilatedfrom3rdto6thsegmentsandthenabruptly na「「owed towardsthe anal end as in L masa()1;eachtergitesimilarlypuncturedand AptcrousLat/1・l()1/11‘In「romtheKiiPeninsula 49 Fjg l Lat1/,・obltl111(s.sir)、/-olasantl111YW、T、、、、、BI:,sp nov.,(S 「romMt.Koya-sanofWakayamaPre- fecture,Japan.Scale:1.0mm. pubescentasinLmasao1;inmale,8thsterniteshallowlythoughdistinctlyemarginate atthemiddleofposteriormarginandsomewhatdepressedbeforetheemargination. surfaceofthedepressionmorecloselyprovidedwith neblackishbrownsetaethanin otherparts,71hsterniteaml ostsmi ple,infemale,8thsterniteabruptlyna「「owedin posteriorthirdstowardsthegentlyroundedapex. MalegenitalorgansimilaringeneralconfigurationtothatofLmasao1indo「Sal ll in the followingpoints: ventral scleriteofmedian lobe vjew, but djfferent from clubbedandmuchmoreelongate; fusedparameresymmetrical,uniformlyna「「owed towardstheapex,dorsalsurfaceprovidedwithafinelongitudinalcarinaatthemiddle ofposteriortwo-thirds. 50 Yasuaki WATANABE 5 Figs.2-7. Secondarysexualcharactersofabdominalsternitesinthemale;L.(s.sir)ko、,asanun1sp nov (2);L.(s.str)ohto1/ensespnov.(3);L.(s.str)!se11sespnov.(4);L.(s.str)flail、・/fells.osp nov.(5),L (s.str)kinokunte,1sespnov(6);L.(s.str)、、,astlnlatanu111spnov.(7). Typeselies. Holotype: ,allotype: Mt.Koya-san,WakayamaPref.,Honshu, , Japan,11-XI-i971,Y.WATANABEleg.Paratype:1(3,samedataasfortheholotype. Thetypespecimensaredepositedin thecollectionof theLaboratoryof InsectRe_ sources,TokyoUniversityofAgriculture. Distribution. Japan(centralHonshLl:KiiPeninsula). Rema;'ks. This new species is also similar in general appearance to L. blaChyPtelumSHARP(1889,p255),butarereadilydistinguishablefromitbyconfjgu_ rationofthemalegenitalorgan. Bionomics. Allthetypespecimenswerefoundintheleaflitteraccumulatedjna deciduousbroadleavedforestonMt.Koya-san. Etymology. Thespecificepithetofthisnewspeciesisderivedfrom''Mt Koya_ san”,thetypelocality. Antcrous1_at/11・o/111111「romthe KiiPeninsula Figs.8-10. MalegenitalorganofLa1/11obium(s.str)ko、asantl1nsp nov;dorsalview(8),lateralview (9),andventralview(10).Scale:l.0mm. Lathrobium(s.str.)ohto/1e1'seY.WATANABE,sp nov [Japanesename:etc-himckobane-nagahanekakushi] (Figs3,ll-13) Body length: 6.5-7.6mm(from frontmarginofhead toanalend); 3.2-3.5mm (fromfrontmarginofheadtoelytra1apices). Body elongate, parallel-sided and somewhat depressedabove. Colour reddish browntoreddishblackandmoderatelyshining,withmouthparts,antennaeandlegs brownishyellow. Maleand female. Thepresentnewspeciesissimilarinbodysizeandgeneral appearancetoLk〔)yasanum,butdifferentfromitinthefollowingpoints: Headsomewhattransverse(width/length=1.05)andslightlymorestronglyna一「 rowed anterjad than jn L ko、,asanun1; lateralsidesmoredistinctlyarcuate;Su「face sljghtlylesscoarselypuncturedthaninL koyasanumandcoveredwithsomewhatf?lIe「 m1croscopjcgroundsculpturethanthatof L koyasanum;eyessmallandnea「lyflat, thejr1ongjtudjna1djameterlessthanone-thirdaslongaspOSOtCula「Pa「t・Antennae elongate,extendingtothemiddleofpronotumandnotthickenedOtWa「dStheapical segment,6thto10thsegmentsmoreorlessmoniliform,andsimilarina「tiCulatiOnto thoseofL ko、,asanum. 52 Yasuaki WATANABt Figs. 11-13. MalegenitalorganofLa1/11-oblltm(s.str)o/1to1/e11sesp nov;dorsalview(11).lateralview (l2),andventralview(13).Scale:1.0mm. Pronotum similar inconfiguration tothat of L ko、,asamtm, remarkably longer thanbroad(length/width=1.27),apparently longer(pronotum/head=1.47)andsome- whatbroader(pronotum/head=1.10) thanhead;surfacesimilarlypuncturedas in L koyasanlunexcept foranarrowmediansmoothspace.Elytrasubtrapezoida1though less dilatedposteriadthan inL ko、、,asanum,alittletransverse (width/length=1.10), distinctly shorter (elytra/pronotum=0.75) but somewhat broader (elytra/prono- tum=1.05) thanpronotum;posteriormarginbroadlyemarginateatthemiddleasinL koyasanum;surfacemorecloselyandmoredistinctlypuncturedthaninLko、,aanMn. Legsmoderatelylong,profemora,protibiaeandprotarsisimilarinstructuretothoseof L ko、,asamm1. Abdomenelongate, 3rd to7th tergiteseachmoredenselyandmorecoarsely punctured than in L ko、,asanun1andcoveredwithfinebrownishpubescence,8thter_ gitedistinctlymoresparinglypuncturedthanintheprecedingtergjles; jnmale,81h Ste「nifeme「eshallowlyemarginateatthemiddleofposterjormargjnthanjnLk()、,a_ Sanlml andShallowly,nock-shapedlydepressedinfrontoftheemargjnatjon,surfaceof thedeP「eSSOinmorecloselysettledwithfinebrownishsetaethanjnotherparts;7th Ste「nifeSli9htIyemarginateatthemiddleofposteriormarginandshallowly,1ong1tud1_ nattydeP「eSSedbeforetheemargination,surfaceofthedepressionmorecoarselyso_ tOSethaninothe「Parts;6thsternitesimple;infemale,8thsterniteabruptlynarrowed inPOSte「Oi rthirdtowardsthenarrowlyroundedapex;7thsternjtesjmple Male9enita1organspindle-shapedandwellscIerotizedexcept formembraneous ApterousLath,・()11tl,11fromtheKiiPeninsula 53 Ventralsideofmedianlobe.Medianlobeconsiderablyshorterthanfusedparamere, widestatbasalthirdandmorestronglynarrowedapicadthanbasad,withventralscle_ 「iteeton9ate, muchshorter thoughapparently broader than that of L koyasartMn, ab「uptlynarrowedinapicalpart towardsthebluntlypointedapex.Fusedparamere Slightlyasymmetrical inapical third,abruptlynarrowedinapical thirdtowardsthe acutelypointedapex;surfaceprovidedwithafinelongitudinalcarinaatthemjddlejn apical fourth. Typeseries. Holotype: , allotype: 0sugidani,Mt. 0htoh-san,Wakayama , P「ef.,Honshu,Japan,24-IV-1990,1.MAToBAleg.Paratypes:1(;,samelocalityand Collectorasabove,29-VII-1982;1 Mt. 0htoh-san,WakayamaProf.,Honshu,Japan, , 15-V-2000, 1. MATOBA leg; 2 Akatsuchimori-yama, 0htoh-mura, Wakayama , Prof.,Honshu,Japan,26-V-1993,1.MAToBAleg;1d,Maenokawa,WakayamaProf., Honshu,Japan,24-V-1991,1.MAToBAleg.All thetypespecimensaredepositedin thecollectionoftheLaboratoryofInsectResources,TokyoUniversityofAgriculture. Distribution. Japan(centralHonshu:KiiPeninsula). Bionomics. ThetypespecimenswereextractedbyaTu11gren funnel fromleaf- littertakeninbroadleavedforestsofOhtoh-murainWakayamaPrefecture. Etymology. Thespecificepithetofthisnewspeciesisgivenafterthetypelocal- ity“Mt. 0htoh-san”. Lat1trobium(s.str.)isenseY.WATANABE,spnov. [Japanesename:Ise-himekobane-nagahanekakushi] (Figs4,14-16) Body length:5.6-6.1mm (from frontmarginofheadtoanal end); 2.9-3.0mm (fromfrontmarginofheadtoelytra1apices). Similar in faciesandcolour to L. ohtohe11se, but differs from it in the smaller bodyandthefollowingpoints: Male and female. Headslightlytransverse(width/length=1.03)oraslongas broacしsubtrapezoida1, somewhat more strongly narrowed anteriad than in L. ohtohense; lateralsidesgentlyarcuate;surfaceslightlymorenumerouslythoughless coarselypuncturedthaninL.ohto1/enseandcoveredwithmuchfinergroundsculpture thanthatof L. o11tohense; eyessmall,almost at, their longitudinal diameterabout one_thjrdaslongaspostocularpart.Antennaeelongate,extendingslightlybeyondthe mjddleofpronotum,notthickenedtowardstheapicalsegmentasinL.ohtoherlse,5th 10thsegmentsmoreorlessmoniliform,andsmi ilarinarticulationtothoseofL. to o/1tohense. pronotumslightlymoredistinctlynarrowedposteriadthaninL.ohto11enSe,aPPa一「 ent1y longer than broad (length/width=1.23), considerably Ion9e「(P「onOtum/ head=137)andsomewhatbroader (pronotum/head=1.08)thanhead; late「alSides almoststrajght jn anterior two-thirds,somewhatarcuate inpOSte「iO「thi「d;Su「face slightlymorenumerouslyandsomewhatmorecoarselypuncturedthaninL・ohOthenSe 54 、11suakiWATAN、1]1 Figs.14-16. MalegenitalorganofLat1/1・chiff,11(s.str)1se11sesp nov: dorsal vie、、'(l4). lateral view (15),andventralview(16).Scale:1.0mm. except foranarrowmediansmoothspace.ElytrasimilarinconfigurationtothoseofL. ohtohense,somewhat transverse(width/length=l.11),distinctlyshorter(elytra/prono- tum=0.79) butalittlebroader (elytra/pronotum=1.08) thanpronotum;surfaceless closelyandmuchmorestronglypuncturedthaninL. ohtohense. Legssimilarinstruc- turetothoseofthemembersofthisspecies-group. Abdomenelongate,eachtergiteclosely, finelypuncturedandcoveredwithfine brownishpubescenceasinL.ohto/1ense;inmale,8thsterniteshallowlythoughsome- whatmoredeeplyemarginateatthemiddleofposteriormarginthaninL.ohtohense andlongitudinally,morestronglydepressedbeforetheemarginationthaninL.ohto/1- ense,surfaceof thedepressioncloselysettledwithblackishbrowncoarsesetae;7th sternitenearlytruncateatthemiddleofposteriormarginandslightlydepressedorflat- tenedin frontofthetruncation;6thsternitesimple; in female,7thand8thsternites eachsimilarinconfigurationtothatofL.o/1to17e11se. Malegenitalorganellipticalandalmostsymmetrical,wellsclerotizedexcept for membraneousventralsideofmedianlobe.Medianlobesomewhatlongeranddislinclly broaderthanfusedparamere,widestatthemiddleandmuchmorestronglynarrowed POSte「Ia Withventralscleritestronglynarrowedtowardsthepojnted apex Fused Pa「ame「eab「uPtlynarrowedinapicalparttowardsthepointedtip;lateralsjdestrongly elevatedinPosteriorhalf,surfaceprovidedwithafinelongitudinalcarjnaalongthe medianline,bearingatriangularprocessbeforetheapexasseenfromlateralside 「jPeSones・ Holotype: , allotype: Tsurugitouge, Nansej T., Mje pref , Honshu,Japan,20-I-2000,H.YoKozEKIleg.Paratypes:13 11 , same data as fo「theholotype; I 1 ,samelocalityandcollectorasabove,,10_l_1gg8; l i , Samelocalityandcollectorasabove,15-I-2000;9 1 Kourajbjro, lse c M1e P「ef・,Honshu,Japan,10-I-1998,H.YoKozEKlleg;4 , ,sam, elocalityandco1jector AptcrousLat1/1)/)1tl1,1fromtheKiiPeninsula 55 as above, 31-I-1998; 2 2 Erihara, Isobe T., Mie Pref., Honshu, Japan, , , 20-I-2000,H.YOKOZEKIleg.Thetypespecimensaredepositedinthecollectionofthe Laboratoryof InsectResources,TokyoUniversityofAgriculture,except for several paratypeswhicharepreservedinYoKozEK1'scollection. ist''10tfffo'7. Japan(centralHonshu:KiiPeninsula). !o'7o1mcs. Unknown. Etvn1o1ogy. The specific epithet of thepresent new species is derived from “Ise”,theoldnameofMiePrefecture,inwhichlieail thethreeknownlocalities. Latltrobiuln(s.str.)nankienseY.WATANABE,sp nov. [Japanesename:Nanki-himekobane-nagahanckakushi] (Figs5,I7-22) Bodylength:5.8-7.4mm(from frontmarginofheadtoanal end); 3.1-3.3mm (fromfrontmarginofheadtoelytraIapices). Similar ingeneralappearancetotheprecedingthreespecies,butdistinguishable fromthembysecondarysexual character ofthe8thabdominalsterniteinthemale, whichismoredeeplyandsubtriangularlyexcisedatthemiddleofposteriormargin. Male and female. Headsimilar inconfigurationto thatof L. lsensethough slightly more transverse (width/length=1.05); lateral sides gently arcuate as in L. 1sense;surfaceslightlymoresparinglyandslightlymorecoarselypuncturedthaninL. isenseandcoveredwithextremelyfinegroundsculptureasinL. isense;eyessmalland nearlyflat, their longitudinaldiametershorterthanone-thirdthelengthofpostocular part.Antennaeelongate,extendingslightlybeyondthemiddleofpronotum,somewhat moreslender thanthoseofL.1sense,twoproximalsegmentspolished,theremainings opaque,5thto10thsegmentsmoreor lessmoniliform,andsimilar inarticulationto thoseofL. isense. Pronotum narrowed posteriad as in L. lsense, apparently longer than broad (length/width=1.18), distinctly longer (pronotum/head=1.37) and a little broader (pronotum/head=1.10) than head; lateral sidesmoredistinctly arcuateinposterior thirdthaninanterior two-thirds;surfacemoresparinglyandmorecoarselypunctured than inL. i.sense,except foranarrowmediansmoothspace.ElytrasubtrapezoidaI, slightly more dilated posteriad than in L. lsense, a little transverse (width/ length=1.12),distinctlyshorter(elytra/pronotum=0.79)butsomewhatbroader(elytra/ pronotum=1.05) thanpronotum; lateral sidesalmoststraightexceptnear anterior andposlerjorangles,posteriormarginslightlymoredeeplyemarginatethan in L. 1sense;surfaceslightlymoreclosely,moreshallowlyandmoreroughlypuncturedthan jnL.1sense.Legsmoderatelylong,similarinstructuretothoseofL.lsense. Abdomenelongate,3rdto8thtergiteseachsimilarlypuncturedandpubescentas jrl」L 1・so,t?,e; jnmale, 8thsternitesubtriangularlyexcisedat themiddleofPOSte「iO「 margjnandlongitudinallydepressedbeforetheexcision,surfaceofthedeP「eSSOin morecloselysettledwithfineblackishbrownsetaethaninotherPartsexceptfo「ana一「 56 Yasuaki WI、TANABI Figs.17-19. MalegenitalorganofLa11/,・obi1l111(s.str)nankie,liesp nov.,、lromIkenoyamaofKoza gawa-choinWakayamaPrefecture;dorsalview(17),lateralview(18),andventralview(19).Scale 1.0mm rowlongitudinalsmoothspacealongthemedianline;7thsterniteslightlyemarginate atthemiddleofposteriormarginandfeebly,longitudinallydepressedin frontofthe emargination;6thsternitesimple;infemale,8thsterniteabruptlynarrowedinposterior thirdtowardsthenarrowlyroundedapex;7thsternitesimple. Male genital organ considerably different from thoseof the three preceding species.Medianlobeelliptical,slightlylonger thanfusedparamere,withventralscle- ritewidest at themiddleandabruptly narrowed inapical fifth towards thepointed apex. Fusedparamerenarrowedtowardstheapex which isacutely pointedasseen fromdorsalside,stronglycurveddorsadinapical fourthinprofile,surfaceprovided withafinelongitudinalcarinaatthemiddle. Typeseries. Holotype: (3,allotype: Ikenoyama, Kozagawa-cho,Wakayama , Pref., Honsh1L1,Japan, ll-V-1996,1.MAToBAleg. Paratypes:4 ,9 ,samedataas for theholotype;3 2 ,samelocalityandcollectorasabove,3-XI-2000;3 , , 9 Fudou-dani,MiyamaT.,MiePref.,HonshLl,Japan,22-IX-2001,K.TOYODAleg; , 14 10 Mikizaki, 0wase C., Mie Pref., Honshu, Japan, 25_x_1995, H. , , YOKOZEKIleg;2 ,samelocalityandcollectorasabove,29-IX-1996; 13 18 , , Kukizaki,0waseC.,MiePref.,Honshu,Japan,12-II-1996,H.YoKozEKl leg;3 Same locality and collector as above, 1-VI-1996. The bolo_andallotypes aredo_, PositedinthecollectionoftheLaboratoryofInsectResources,TokyoUniversjtyof A9「iCultu「e. Theparatypesaredistributed tothecollectionof theabovementioned laboratory,WakayamaPrefecturalMuseumofNaturalHistoryandYoKozEKl,scoffee_ tion. tut'the「Speel'nonsexamined. 3 1?,Tategasaki,KumanoC,Honshu,Japan, , 29-XII-2000, H. YOKOZEKI leg; 3 Kasuga-jinja, Kainan_shi, wakayamapref, , Honshu, Japan, 15-IV-1994, 1. MAToBA leg; 4 2 , Aisuji, shingu_shj, ,

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