The Genus Tetrabothrus (Coleoptera, Staphylinidae, Aleocharinae) from Japan, with Description of a New Species from Hokkaido

6 Pages·1997·5.9 MB·English

by  Kishimoto, T

Eh,t1-a,「ok、・o,25(2):445-450,November15,1997
TheGenusT(et1,abothrus(Coleoptera,Staphylinidae,Aleocharinae)
fromJapan,withDescriptionofaNewSpeciesfromHokkaido
Toshio KIsHIMoTo
LaboratoryofEntomology,TokyoUniversityofAgriculture,
Setagaya,Tokyo,156Japan
Abstract AnewspeciesofthealeocharinegenusTett1aboth,-usisdescribedfrom
Hokkaido,Japan,underthenameofT.septent1・Iona/Is.AkeyisgiventotheJapanese
speciesof「e;t,abet/1,・11s.
Up tothepresent,11speciesofthealeocharinestaphylinidgenus nett,abothrus
BERNHAUER have been known from the world (BERNHAUER & SCHEERPEI_TZ, 1926;
CAMERON, 1939,1943,1950;NAKANE,1991;PACE, 1992).Theirknowndistributional
rangeisrestrictedtotheOrientalRegionandAustralia. ThroughthecourtesyofMr.
ShigehisaHoR1(NatureConservationDepartment,HokkaidoInstituteofEnvironmen-
talSciences,Sapporo),Ihadanoppoturnitytoexaminesomespecimensofthegenus
obtainedinHokkaido,Japan.TheyarenewtothePalearcticfauna.Astheresultofmy
examination, it hasbecomeclear thatthespecies isdifferent fromanyotherspecies
describeduntilnowandmustbenewtoscience. Inthispaper, Iwilldescribeitasa
newnet;-aboth1-usspeciesandwillalsoreport thefirstrecordofT.Japonlcusfromthe
RyukyuIslands.
GenusTe‘trabothrusBERNHAUER
「et'abet1/1'usBERNHAUER, l915,Tidschr.Ent.,58:240[typespecies: Tetlabot11''usc/avattlsBERNHAUER,
fixedbysubsequentdesignation(BLAcKwELDER,1952,p382)]. - CAMERON,1939,Fn.Brit. Ind.,
Coleopt.Staphy1.N p457.
Antennaeshort, strongly clavate. Labrum transverse, arcuately emarginate in
front, theanterior angles rounded. Mandibles lightlycurved, pointedandedentate.
Maxillaemoderatelyelongate;galeanearlyparallel-sidedandcloselyprovidedwith
finebristlesattheapicalpart;1aciniabroaderandcloselyprovidedwithfinebristleson
theinnermargin;maxillarypalpus4-segmente 1stsegmentshort,2ndlightlycurve
slightlythickendtowardsapex,3rdaslongas2ndandscarcelybroader than2n 4th
subulate,ahalfaslongas3rd.Mentumtransverse,subtrapezoida1,theanteriormargin
broadlyemarginate. Labialpalpus3-segmente 1st long, 2ndshort,3rdnarrowerand
longer than2nd.Thirdto6thabdominal tergitesdeeplyandbroadlyexcavatedat the
base.
446 ToshioKlsHIMoT0
4
2
Figs. 1-4. Mouthpartsof71e11abot/1,・usJapon!cusNAKANE - l, Labrum;2,mandibles;3,maxilla; 4,
labium.
KeytotheJapaneseSpeciesoftheGenusTeltrabotltrus
1 (2) Colorpaleyellowishbrown,bodyslenderandsubpara11e1-sidecl, longitudinal
diameterofeyenearlytwo-thirdsaslongaspostocularpart...........
sepfenf''lonaflssp
nov
2 (1) Colorreddishbrown,bodybroadandsomewhatdepressedabove,eyesvery
large,theirdiametermuchlongerthanpostocularparts
Japomcl'sNA NE
:netrabotllrusseptentrionalisKIsHIMoTo,sp nov.
(Figs5-6)
Body length: 5.l-5.4mm(from frontmarginofhead toanalend);2.3-2.4mm
(fromfrontmarginofheadtoapicesofelytra).
Bodyelongateandslender,parallel-sided.Colourpaleyellowishbrown,withan-
tennae,head,pronotumanddistalsegmentsdarkbrown,shiny.
Female(Holotype). Headsubquadrate, transverseandweakly convex (width/
length=1.20),broadestbehindanteriormarginofhea slightlynarrowedposteriadto
constrictedneck;surfacesparinglycoveredwithlongrecumbentpubescence;eyesrel-
ativelysmallandprominent, longitudinaldiameterofeyenearlytwo-thirdsaslongas
postocular part. Antennaeclavate, 1ststout andapicallydilated,morethan twiceas
Tet1abot/1・,11sfromJapan 447
Fig 5. Habitus of 「et,abet/1,・us
sp nov., female.Scale1.0mm.
longasbroad,2ndshorter than tst,3rdshorterthan2ndbutlongerthanbroa 4thto
10theachapparentlybroaderthanlong,11thconical,1.2timesaslongasbroad;rela-
tive length (wideth) ofeach segment frombase toapex: 2.7 (1.2):1.8 (1.0):1.5
(1.1):0.6(1.4):0.8(2.1):0.9(2.1):0.9(2.1):0.8(2.3):0.8(2.1):0.8(2.0):1.3(1.6).
Pronotum subtrapezoida1andconvex,alittlebroader thanlong(width/length=
1.09),andalittlebroader thanhead (pronotum/head=1.05),widestjustbehindthe
posteriormargin,posteriorhalfsubpara1lel-sided,anteriorhalfgraduallynarrowedan-
teriadtoroundlyproducedapex;hindanglesbroadlyrounded;surfacesimilarlypubes-
cent to head.Scutellumtriangular,surfacesmooth,witha fewfinesetae.Elytrasub-
parallel-sided,somewhatdepressedabove,broader thanlong(width/length=1.48)and
muchbroader thanpronotum(elytra/pronotum=1.56),posteriormarginmostlytrun-
448 ToshioKlsHIMoTo
Fig.6. Female spermatheca of leif,abet/u-us
sepre,Ir・,10,Ia/Is.Scale:0.1mm.
catothoughdistinctlyemarginateatthemiddle,posterioranglesrounded;surfacemore
denselycoveredwithlongrecumbentpubescencethanonpronotum.Legsmoderately
long,tarsal formula1' 1'-5;relativelengthofeachsegment frombasetoapexasfol-
lows: foretarsus: - 0.8:1.0:1.0:2.0;midtarsus - 13:1.1:1.1:1.0:2.0;hindtarsus: -
2.3:1.5: 1.3:1.2:2.5.
Abdomenparallel-side distal3segmentsgraduallynarrowedposteriad,surface
ofalltergitesglabrousexcept forapicalparts fringedwithsomerelatively longhairs;
3rdto6thtergitesdeeplyandbroadlyexcavatedateachbase.Spermatheca(Fig 6)
coiledmanytimes;apicalpartgourd-shaped.
Maleunknown.
「vpe set・1es. Holotype: Female, 0keto-ko, 0keto-cho, Abashiri, Hokkaido,
Japan,4-VIII-l994,S.HoRl leg.Paratypes:1female,samedataasfortheholotype;1
female, Kanoko-dam, 0keto-cho, Abashiri, Hokkaido,Japan, 20-VII-1994, S. HoRI
leg.DepositedinthecollectionoftheLaboratoryofEntomology,TokyoUniversityof
Agriculture.
TeltrabothrusJ'aponicusNAKANE
(Figs.1-4)
Telt,aboth・tus/aponlcusNAKANE,1991、Kita-kyushunoKonchu, Kokura,38:111. - KIsHIMoTo,1995、
Elytra,Tokyo,23:94, fig.l.
ThisspecieswasoriginallydescribedfromKagoshimaandNagasakiPrefectures,
Kyushu.In1995, sHIMoTorecordedit fromChibaPrefecture,Honshu.Inthepresent
study, Iexaminedaseriesofspecimenscollected fromtheRyukyuIslands. The fol-
lowingrecordsofthespecimenssuggestitswideoccurrenceinSouthwestJapan.
Specimensexamined [additionalrecords]. 2exs.,Sumiyou,Amami-oshima Is.,
6-VII-1986, 0. ToMINAGA leg; 2exs.,Hatsuno,Sumiyou-son, Amami-oshima Is.,
23-IV-1994, Y.KANEKo leg;9exs.,Takeda-rindou,Ishigaki-jimaIs.,28-II-1991,T.
7elt1abot/It'fisfromJapan 449
KlsHIMoToleg;3exs.,samelocalityandcollectorasabove,29-III-1991,2exs.,same
localityasabove,19-III-1991, M. 0wADA & Y. 0KUsHIMAleg; 2exs.,Takeda, Ishi-
gaki-jima Is., 27-II-1991, T.KlsHIMoTo leg; 3exs.,samelocality andcollector as
above,28-II-1991; 1ex.,samelocality andcollector asabove,20-III-1991; lex.,
samelocalityandcollectorasabove,14-VI-1993;1ex.,samelocalityasabove,6-
III-1991,T.HANATANIleg; lex.,Yonehara,Ishigaki-jimaIs.,30-III-1995,K.TOYODA
leg;2exs.,Mt.0moto-dake, Ishigaki-jimaIs.,25-m-1991,T.KIsHIMoToleg;1ex.,
Ohara, Iriomote-jimaIs.,26-IV-1981,S. MORITAleg; 5exs.,nearKanpira-no-taki,
Iriomote-jimaIs.,27-III-1991,T.KlsHIMoToleg;11exs.,nearMt.Urabu-dake,Yona-
guni-jimaIs.,23-III-1991,T.KlsHIMoToleg;4exs.,Mt.Urabu-dake,Yonaguni-jima
Is.,23-III-1991,T. K1sHIMoToleg.,9exs.,samelocalityandcollectorasabove,24-
III-1991,2exs.,samelocalityasabove,13-IV-1997,T. IsHIKAwA & H.YosHITAKEleg.
Disrtlbution. Japan(Honshu,Kyushu,Amami-oshimaIs.,Ishigaki-jimaIs.,Iri-
omote-jimaIs.,Yonaguni-jimaIs).
Acknowledgement
IwishtoexpressmycordialthankstoDr.Shun-IchiUENoandProfessorYasuaki
WATANABEofTokyoUniversityofAgriculture, for theircontinuousguidance.Hearty
thanksarealsoduetoMr. ItsuroKAwAsHIMAforhisassistanceinpreparingtheexcel-
lent illustrationof thewholeinsectinsertedinthepresentpaper. Iamalsomuchin-
debtedtothefollowingentomologistsfor theirkindofferofthematerialsusedinthis
study: Dr.Seiji MORITA, Mr. TatsuoHANATANI, Mr.ShigehisaHoRI, Mr.Shigehiko
SHIYAKE,Mr.YuichiOKUsHIMA,Mr.YoshinoriKANEKo,Mr.Koji TOYODA,Mr.Tadashi
IsHIKAwAandMr.HirakuYOSHITAKE.
要 約
岸本年郎:日本産Tot,abet/,,・us属と北海道産l新種の記載. - tot,aboth・,us属のハネカクシ
は, 東南アジアとオーストラリアを中心にll種が知られ, 日本からはコンボウヒゲブトハネカ
クシT.Japon,cusNAKANEの1極が記録されていた. 今回,北海道環境科学センターの堀 繁ク、
氏のご厚意により, 北海道産本属の個体を検討した結果, 新種であることが判明したので, キ
タコンボウヒゲブトハネカクシ「e1taboth・tusseptent,・ionalisKIsHIMoToと命名して記載した. コン
ボウヒゲブトハネカクシとは, 黄褐色の体色と複眼が小さいことで容易に区別できる. また,
コンボウヒゲブトハネカクシを, 流球列島より初めて記録した. キタコンポウヒゲブトハネカ
クシの発見は, 本属で初の日I 北区に深く侵入した種として生物地理学的にも注目に値する.
References
BERNHAUER, M., & 0. ScHEERPEl_TZ, 1926. Staphylinidae VI. inJUNK,W., & S. SCHENKLING (edS)
Coleoptet-orumCata1ogus,pars82(pp 499-988). W.JunLk,Berlin.
BLAcKwELDER,R.E., l952. ThegenericnamesofthebeetlefamilyStaphylinidae.U.Snatn.Mus.Bull.
450 Toshio KIsHIMoTo
200:1-483.
CAMERON,M.,1939. Coleoptera.StaphylinidaeIV.Part.11.Inthe:FaunaofBt1'tis1/1'ldiaincludingCey-
lonandBut-,na.iii十pp411-691,3pls.Taylor&Francis,London.
- 1943. NewspeciesofStaphylinidae(Col)fromBorneo.Ent,,101.,non.Mag.,79:139-143.
- l950. NewspeciesofStaphylinidae(Col)fromtheMalayPeninsula.A,1,1.Mag nat.Hist.,(12),
3:89-l31.
KlsHIMoTo,T.,1995. Firstrecordof 「et・,aboth・lusJapomcus(Coleoptera,Staphylinidae, Aleocharinae)
fromHonshu,Japan.Elyt,a,nokyo,23:94.
NAKANE,T.,1991. Notesonsomelittle-knownbeetles(Coleoptera)inJapan 8. Kita-kyus/t11'10Ko'1chu,
Kokut・a,38:111-ll5.
PACE, R., 1992. Aleocharinennepalesidel Museo diGinerva. Parte VI: Myrmedoniini (Coleoptera,
Staphylinidae). (112.ContributealiaconoscenzadelleAleocharinae).Re、uesulsseZoo1.,99:125-
145.
Elyt・,a, fok、,o,25(2):450,November15,1997
新 雑 誌 紹 介
AnEntomologicalSocietyandJournal
ENTOMOLOGICAL NEWSFROM RUSSIA
President:Mr.SergeiGUNDoRov Scientificadvisers:
PlantProtectionDepartment RobertALExls,Belgium.Coleoptera,Cetoniinae
AgriculturalInstitute A.S.ZAMoTAILov.Russia.Coleoptera,Carabidae
TetralnaiaSquare A.VSwIRIDov,Russia.Lepidoptera,Noctuidae
Saratov,410710Russia Ju.P.KoRsHuNov、Russia.Lepidoptera,Rhopalocera
Fax[phone] V.S.MuRzlN,Russia.Lepidoptera,Arctiidae
TodayinRussiaabout2,000entomologistsareengagedinthestudyoftheLepidopteraand
Coleoptera.Eachyear theymakenumerousexpeditionsindifferentregionsofRussiaandfor-
mer USSR.Unfortunately,verymanypeoplehavenocommunicationwitheachotherorwith
foreignpartners.Foralongtimetherehasbeenneedforcreationofamagazineandsociety, for
regularcommunicationandassociationofourefforts.Intheworldmanypeoplethinkthatnow
Russiaisinanunstablesituationandourmailisnotreliable.Itisnotso;theitemsofmailreach
quicklyandwithoutproblems.
ThefirstnumberofthenewmagazinewillappearinJanuary-February1998.Weplanto
issuefournumbersperyear.Eachissuewillconsistofacollectionofscientificarticles(reports
ofexpeditions, insect listsofseparateregions,descriptionofnewspeciesandsubspecies,ecol-
ogy,biology,conservationofnature,andothers)andnews(informationofnewbooks,organisa-
tionofexpeditions,searchforpartnersonapurchase,sale,exchangeandcultivationofinsects,
informationaboutinternationalexhibitionsanddaysofexchanges,etc.).Volumeofeachnum-
berwillbe50-100pageswithcolourphotos.ThemaganzinewillbeissuedinEnglishlan-
guage.Eachyearwillbeissuedalistofmemberswiththeirinterests.
Tobecomeamemberofoursociety,itisnecessaryforyoutoremitUS$65.Eachmember
ofoursocietywillreceivebyairmail fournumbersofthemagazineandnewsperyear. Also,
memberswillhaveopportunitytopublishtwoarticlesandtwoannouncements.