Three New Species of the Genus Nazeris (Coleoptera, Staphylinidae) from Taiwan

7 Pages·1996·6.9 MB·English

by  Ito, T

Elytra,Tlokyo,24(1):41-47,May15,1996
Three NewSpeciesoftheGenusNazerzs(Coleoptera,
Staphylinidae) fromTaiwan
Tatoo ITO
E7-303, 0tokoyamaYutoku8,Yawala, Kyoto,614Japan
Abstract Three new staphylinidbeetleso「thegenusNaze''isaredescribed
fromTaiwanunderthenamesofN.smetanatsp nov., N yasutoshiisp nov and N.
simulanssp nov.
Inthepresentpaper,I amgoingtodescribethreenewspeciesofTaiwanese
Nazeris collected by Dr. A.SMETANA andMr. Y.SHIBATA. They resemblethe
species belonging to theN feimoralisgroup but areeasily recognized on the
unarmedmalehindtrochanters.0nanaccompanyingmap(Fig 8),thedistribution
ofthenewspecieswillbeshown.
Nazerissmetanaisp nov.
(Figs.1-2)
Bodyrathersmallbut robust,shining,black,mandibles, labrumandbasal
two or threesegmentsofantennae reddish brown, maxillary and labial palpi,
remainingantennalsegmentsandlegsyellowishbrown;pubescenceonbodysurface
dark brown to black.
Length:4.7mm.
Headsuborbicularratherthansubquadrate,alittlelongerthanwide(1.05:1),
coarsely, closely and more or less irregularly punctate, the arrangement of
puncturesslightlydisturbedonsubdepressedfrons; labrumclearlyfour-toothed,
widelyand triangularlynotchedinmiddle, theinnertwo teeththickandalittle
longerthantheoutertwo;vertexgentlyconvex;eyesrelativelylarge,prominent,
thelongitudinaldiameterclearlylargerthanahalfthelengthofpostgena;postgenae
roundly narrowed toward neck; antennae slightly surpassing the middle of
pronotum,all thesegmentsdistinctlylongerthanwide,1stsegmentveryrobust
andnearlyaslongasthefollowingtwosegmentstogether,2ndshortestbutwide,
3rd to10thgraduallyshorteneddistad,11thslightly longer andwider than the
10th. Ventral surface of head similarlypunctate thoughmoreregularly to the
dorsalsurface;mentumshiny,submentumlessso.
pronotum oval, longer than wide (1.14:1), a little shorter (0.93:1) and
42 Tatoo ITO
narrower than head (0.86:l), widest at apical third, fromwhere thesidesare
strongly roundedapicadandgentlysobasad;discmorecoarsely punctatethan
onhead,thepuncturesbecominglesscoarselaterad,somewhatirregularlyarranged
nearmedianline,whichisnarrow,hardlydiscernible,andtraceableinbasalhalf,
with feebledepressiononeachside.
Elytrasubtriangular,moderatelynarrowedatshoulders,considerablyshorter
thanpronotum(0.86:1),widthatthewidestpartnearapicesabout twiceaswide
asbasesandhardlywider thanpronota1width;surfaceslightlyundulate,coarsely,
closelyandalittlerugoselypunctate,thepuncturesintermediateinsizebetween
thoseonheadandonpronotum.Prosternumcoarselyand transverselyseriate-
punctate,mediancarinaratherobtuseandalmostvanishingattheapicalextrem-
ity.Scutellumperceptiblypunctate.
Abdomenslightlydilated laterad,puncturesonbasal tergitessimilarlysized
asthoseonhead,becomingfiner towardapical tergites, thoseoneach sternite
coarser thanonthecorrespondingtergite,thoseonterminal tergiteveryfineand
obsolete. Inmale,5thsternitescarcely,6thweaklyand7thmoderatelydepressed
alongmiddle,8thsternitenotdepressedand rather widelyandshallowlyexcised
atapicalmargin inmiddle;hindtrochanterswithoutanyhooksonoutersides.
Malegenitaliatrilobed,medianlobecomposedofbasalspheroidalpieceand
apical sclerotizedpart, theapicalpartshapedasabamboo-leaf, pointedat tip
and slightly curved ventrad; a pair of apophyses heavily sclerotized, strongly
expanded laterad,sharplypointedat apices, not extendingbeyond theapex of
medianlobeandclearlythickenedinmiddle,whenviewedlaterally.
Holotype: e, Mt.Taipingshan (l,880m), IlanHsien, Taiwan, 14-VII-1993,
A.SMETANAleg.(CanadianNationalInsectCollection,Ottawa).
Though thepresent species isgenerallysimilar in thepunctuation to the
membersof theN femoralisgroup, it iseasilydistinguished fromthelatterby
theunarmedmalehindtrochanters.ItisalsoalliedtoN pa11idipesREITTERfrom
Caucasus in therobust body, but is immediately discriminated by much closer
punctureson thebody,obviouslyshorter labra1teethandquitedifferentshape
ofaedeagus.
2
Figs. 1-2. Nazerissmetana1sp nov;1,aedeagusinlateralview;2,sameinventral view
Three New a二e1・Isfrom Taiwan 43
Nazerisyasutoshiisp
nov
(Figs3-4)
Bodyalittleshiny,reddishblack,headslightlylightened,mandibles,labrum,
andbasal twoor threesegmentsofantennaereddishbrown,remainingantennal
segments, maxillary and labial palpi and legs brownish yellow; pubescenceon
bodysurfacedarkbrowntoblack.
Length:5.0mm.
Headsubquadrate,slightlylonger thanwide(1.07:1),coarsely,closelyand
rather regularlypunctate, thepuncturesscarcelydisturbed inarrangementeven
on subdepressed frons; labrum with inner teeth a little longer than the outer;
vertex evenly convex, postgenae subpara11e1-sided, slightly and sublinearly
narrowedbehindandwidelyangulatedtowardneck;eyesmoderate-sized,withthe
longitudinal diameter about ahalf the length of postgena; antennae slender,
extendingbeyond themiddleofpronotum,all thesegmentsclearlylonger than
wide, 1st segment robust and longest, 2nd shortest, 3rd to 10th gradually
decreasinginlengthdistad,10thapproximatelyequalinlengthto2ndandshorter
than11th.Ventralsurfaceofheadsimilarlypunctatetothedorsalsurface.
Pronotumovate, longerthanwide(1.20:1),aboutaslongasandnarrower
thanhead(0.89:1),widestat apicalthird, fromwherethelateralsidesaremore
gently rounded basad than apicad; disca1puncturescoarseand close, slightly
coarser thanonhead,andsomewhat irregular inarrangement onbothsidesof
median line,which exists inbasal half.
Elytra widened apicad, rather weakly contracted at bases, shorter than
pronotum(0.79:1),widestnearapices,andaswideaspronota1width;surface
slightlyundulateandcoarsely,rugoselypunctate,thepuncturesalittleirregular
in formduetoslight undulations.Prosternumwithmedian carinadiminishing
apicadinheight,andalmostinvisiblenearapicalmargin.
Abdomenslightlyenlargedlaterad,widestat6thsegment, fromwhichit is
narrowedbothapicadandbasad,withpuncturescoarseandcloseonbasaltergites,
fineandsparseonapical tergites,thoseonsternitesdeeperthanontheopposite
tergjtes.Inmale,6thsterniteveryweaklyorscarcelydepressedalongmiddle,7th
sternjteweaklyso,8thsternitenotdepressedandratherdeeplyand triangularly
3 4
Fjgs.3_4.Nazertsyasutoshiisp nov;3,aedeagusinlateralview;4,sameinventralview
44 Tatoo ITO
excisedatapicalmargininmiddle,eachhindtrochanterandhindfemurnormally
formed,withoutanyspecificfeatures.
Malegenitaliawithapicalpart ofmedian lobesharplytriangular,bending
ventrad,pointedatapexandprovidedwithapairoflateralprocessesnearbasal
third, theprocessessemitransparent, incurvedand directedbackwardat apices;
apophysesratherweaklysclerotized,withadistincttriangulartoothoneachinner
sideat basal third, slightly incrassateapicad in ventral viewand moderately
extendingbeyondthetipofmedianlobe.
Holotype: NearChihtuan, IlanHsien,Taiwan,23-VII-1978,Y.SHIBATA
,
leg. (TokyoUniversityofAgricultureCollection, Tokyo).
Thepresentspeciesresembles N perslm11isingeneralappearancewith the
exceptionofthefollowingdifferences:themalehindtrochantersnotuncinate,the
aedeaga1shapequitedifferent,and themale7thsternitemoredeeplyandmore
distinctlydepressed.
ThisspeciesisnamedafterMr.YasutoshiSHIBATA,Tokyo, towhomI am
muchindebted forhisofferofmaterialandinmanyotherways.
N「azerissimulanssp
nov.
(Figs5-7)
Body a little shining, reddish brown, head slightly lightened, abdomen
darkened,antennaeexcept for1stsegment,mouthpart andlegssordidyellow,
withbrownishtoblackishpubescence.
Length:4.7-5.0mm.
Headnearlyquadrate,alittlelongerthanwide(1.05:1),coarsely,closelyand
Fig. 5. Nazerissimula,tssp nov
Three New Naze1・isfromTaiwan 45
regularlypunctatebutalittleirregularlysoonweaklydepressedfrons;vertexevenly
convex; eyes moderate-sized, the longitudinal diameter subequa1to a half the
length of postgena, postgenae subpara11e1-sided, widely angulately narrowed
towardneck;antennaeextendingbeyondthemiddleofpronotum,allthesegments
apparently longer thanwide,1stsegment veryrobust andaboutas longasthe
followingtwosegmentstogether,2ndsegmentshortestbutwide,eachsegmentof
3rd to10thshorter than theprecedingone,11thslightlylongerandwider than
the10th.
Pronotum oval, longer than wide (1.24:1), a little longer (1.04:1) and
narrower(0.88:1) thanhead;lateralsides,eachbearingtwoor threelongsetae
near thewidest part at apical third,arcuatelyconvergent apicadandgradually
andsublinearlysobasad;disca1puncturescoarse,closeanddeep,becomingfiner
laterad,andslightlydisarrangedalongmiddlenearbasebymedianlinewhichis
hardly observable, with faint depression on each side. Scutellum small and
seeminglydevoidofdistinctpunctures.Prosternumwithmediancarinaweakened
near apex.
Elytraveryshort,narrowedbasad,notstronglycontractedatshoulders,much
shorter (0.72:1) and scarcely narrower than pronotum, coarsely, closely and
somewhat rugoselypunctate.
Abdomenslightlydilated toward6thsegment, thennarrowedtowardapical
segments,without anymicrosculpture, andwithpuncturesusuallydiminishing
distadinsize.Inmale,7thsternitehardlydepressedalongmiddle,8thsternitenot
depressed and triangularly excised at apical margin; hind femora and hind
trochanterswithoutanypeculiarities.
Malegenitaliasimilarinstructuretothoseoftheprecedingspecies,butslightly
moreslenderanddelicate,medianlobesimilarlycurvedventrad,sharplypointed
at thetip andwithapairof lateralprocessesbehindmiddle; apophysesmuch
thinner,hardlyextendingbeyondthetipofmedianlobeandnotbearingteethon
theinnerside at base.
6 7
Fjgs. 6-7. Nazerissimulanssp nov aedeagusinlateralview;7,sameinventralview
Holotype: NearJuisuiSpa(400m),HualienHsien,Taiwan,26-III-1980,
,
Y.SHIBATAleg.(TokyoUniversityofAgricultureCollection,Tokyo).Paratype:
19, thesamelocalityasholotype(260m),11-VIII-1976,Y.SHIBATAleg.
Furtherspecimense)camined 1 1 (tenera1),thesamedataasholotype.
,
Thepresentspeciesdiffersfromtheprecedingasfollows:theelytrarelatively
46 Tateo ITO
o
''
Fig.8. Mapshowingthelo-
calities of 0 -Maze,・Is
smetana1 sp. nov., △一
Maze''fs yasufos/uf sp.
nov., and◇一Nazerissi-
mulanssp nov.
short, thepronotumproportionally longer, themale6th and 7th sternitesof
abdomenmoreshallowlydepressedand theapophysesofaedeagusedentateon
innersides.
Acknowledgment
I am hea「tily thankful tODr. A.SMETANA, Ottawa, and Mr. Y.SHIBATA,
Tokyo, fortheirkindnessinofferingthematerialused inthisstudy.
要 約
伊藤建夫:台湾産Nazeris属ハネカクシの3新種について. - 台湾産のNazeris属ハネカク
シを3種記載した. これらは点刻がfemoralis群のものに類似するが, 雄の後転節に鉤状突起を
もたないことにより容易に区別することができる.本論文では3種を記載するとともに, そ
の分布図を示した.
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Elyt1・a,Tokyo,24(1):47-48,May15,1996
OntheMicrohabitat of T,aeluoceruspygmaeus
(Coleoptera,Passalidae)1)
Masahiro KoN
SchoolofEnvironmentalScience,TheUniversityofShigaPrefecture,
Hikone,Shiga,522Japan,
Kunio ARAYA
GraduateSchool ofHumanandEnvironmentalStudies,
KyotoUniversity,Sakyo, Kyoto,606-01Japan
and
Yutaka JoHKI
showaWomen'sJuniorCollege,Setagaya,Tokyo,154Japan
JoHKland KoN(1989) pointedout thatpassalidspecies livinginthedetritus-like
mjcrohabitatsbearmarkedlywidefronttibiaeascomparedwithoneslivingeitherinthe
galleryexcavatedintofallentreesorunderthebarkofdeadtrees,andshowedthreespecies
ofthegenusTaen1ocerusKAUpwithwidetibiae,Tbicant/1atus(PERCHERON),T.platypus
(KAup)andT.pygmaeus(KAup).Ofthese,theformertwospecieshavebeenreportedto
l) Thepresentresearchwassupportedin partbytheGrant-in-AidfromtheJapanMinistryof
Education,ScienceandCulture(No.04041068).