A New Species of the Genus Nazeris (Coleoptera,staphylinidae) from Yunnan Province,South China

5 Pages·1993·4.7 MB·English

by  Watanabe, Y

Elytra,Tokyo,21(1):129-133,May15,1gg3
ANewSpeciesoftheGenusNazerzs(Coleoptera,staphylinidae)
fromYunnanProvince,SouthChina
YaSuakiWATANABE
LabO「atOryofEntomology,TokyoUniversityofAgrjculture,
Setagaya,Tokyo,156Japan
and
XIA0Ning-nian
LaboratoryofInsectTaxonomy,KunmingInstjtutcofzoology,
AcademiaSinica,Kunming,Yunnan,650107chjna
AbSt「aet AnewStaphylinidbeetleofthegenusNazerisisdescrjbedandj11ustraled
uncle「thenameofNazerlszhang1. Itwasfoundinthelitterzoneoftemperateforests
onYu'an-ShannearKunmingCityofYunnanprovince.southchjna
SiXStaPhylinidSpeciesbelongingtothegenusNazerisFAuvELhavehjthertobeen
knownf「omChina;ofthese,twospecieswerereportedfromTienmuschanbyKOCH
(1939,PP・159-l61)andtheremainingfourfromSichuanProvincebyZHENG(1992,
PP・87-91). Du「in9aSine-Japanesecooperativestudyonthesoil faunaoftropical
fo「estinChinamadefromtheendofOctobertothemiddleofNovemberjn1gg2,the
authO「SCollectedaninterestingspeciesbelongingtothisgenus.
After a careful ex_
aminatOi n,ithasbecomeclearthatitisnewtoscienceonaccountofdifferentconfjgu_
「atiOnof9enita1organinthemale. It willbedescribedinthepresentpaper asthe
SeventhSpeciesoftheChineseNazerls. Thehole-andallotypesofthenewspecjesto
bedesc「ibedaredepositedinthecollectionoftheShanghaiInstituteofEntomology,
AcademiaSinica, China, and theparatypesaredistributedtotheco1lectjonsof the
Kunmin9InstituteofZoology,AcademiaSinica,China,andoftheLaboratoryof
Entomology,TokyoUniversityofAgriculture.
Before9oin9further, theauthorswishtoexpresstheirheartythankstoProfessor
YINWen-yingoftheShanghai InstituteofEntomology,AcademiaSinjca,andprofes_
SO「Genta「o IMADATEofTokyoMedicalandDental University for their kind help
thrOu9htheSine-Japanesecooperativestudy. DeepgratitudeisalsoduetoDr.shun_
lobi UENo of the National Science Museum (Nat. Hist), Tokyo, and Dr. Shuhei
NOMuRAoftheEntomologicalLaboratory,FacultyofAgriculture,KyushuUniversity,
Fukuoka, fortheiradviceonthepresentstudy,andtoProfessorHiroshiTAMuRAof
1) ThisstudyissupportedbytheGrant-in-aidNo.04041042forFieldResearchof theMonbusho
InternationalScientificResearchProgram,Japan.
30 YasuakiWATANABEandXIA0Nin9-nian
Fig. 1. aze1-1s' z7/angf sp. nov.,
Scale:2.0mm.
IbarakiUniversity,Mite,andthemembersoftheSine-Japanesecooperativestudyfol
theirkindcollaborationinsearchingfor thisnewspeciesinthefield.
Nazeriszhangisp nov.
(Figs.1-5)
Bodylength:4.1-4.4mm(fromfrontmarginofhead toanalend);2.3-2.4mm
(from frontmarginof head toelytralapices).
Body elongate, nearlyparallel-sided and subdepressed above. Colour reddish
brown to reddish black and moderatelyshining, withabdomenblackish; labrum and
mandiblesyellowishbrown,palpi,antennaeexcept for yellowishbrownbasalsegment,
andlegsyellow.
New Nazerisfrom South China 131
Fig 2. Last twoabdominal sternitesinmaleof
l' Naze1'lv z/ta'7g s nov. Scale:1.0mm.
Headsuborbicular,gentlyconvexmedially,aslongasbroadorslightlytransverse
(width/length=1.02), feeblynarrowedposteriadandwell constrictedat neck; lateral
sidesgentlyarcuate,withagrooveforthereceptionof1stantennalsegmentjnfrontof
each eye; surface reticulately covered with coarsesetiferous punctures, thesetae
blackish anddecumbent forwards;eyessomewhat prominent, the longitudinaldia_
meterofeacheyenearlyahalfaslongaspostocularpart. Antennaeslender,extendjng
tothemiddleofpronotumandnotthickenedapicad,withbasalsegmentpolished, the
remainingsbecominggraduallyopaquetowardstheapicalmostsegment,1stcylindrical
androbust,morethan three timesaslongasbroad, 2nddistinctlylonger thanbroad
(length/width=1.82)butapparentlyshorter(2nd/1st=0.40)andalittlenarrower(2nd/
1st=0.73)than1st,3rdto9thequalinwidthtooneanotherandgraduallydecreasing
in length, thougheachsegment isdistinctlylonger thanbroad,10thhardlyshorter
(10th/9th=0.94)butslightlybroader(10th/9th=1.11) than9th,apicalmost fusiform,
morethantwiceas longasbroadandapparentlylonger(apicalmost/lOth=1.61)and
slightlybroader(apicalmost/10th=1.10) thanloth.
Pronotum gently convex and semiova1, somewhat longer than broad (length/
width=1.07), almost aslongasbutsomewhat narrower (pronotum/head=0.92) than
head, widest atabout anterior thirdandmorestronglynarrowed posteriad thanante-
riad;lateralsidesarcuateinanterior thirdandalmoststraightinposterior two-thirds
asseenfromdorsalside;anteriormarginrounded,posteriormarginfeeblyemarginate
at themiddle, anteriorandposterioranglesrounded, thoughtheformer isnot visible
from above; surfacerather densely and very coarselypunctured and covered with
similar setae to those on head, bearingashort indefinite longitudinal carinaat the
middle before posterior margin and slightly depressed oneachside of thecarina.
Scutellum relatively small and subtriangular, uneven on the surface. Elytrasub-
trapezoidal,dilatedposteriadandsubdepressedabove,alittletransverse(width/length
132 YasuakiWATANABEandXIAoNin9-nian
Fjgs 3_5. MalegenitalorganofNaze1・isz/1angtsp nov.,ventralview(3),lateralview(4),and
dorsalview(5). Scale:0.5 mm.
l l7),djstinctlyshorter (elytra/pronotum=0.75)andsomewhatnarrower(elytra/Pro-
notum=0.93)thanpronotum;lateralsidesgentlyarcuate,posteriormarginemarginate
at themjddle,posterior anglesrounded;surfacesetiferouslypunctured, thepunctures
denser but lesscoarsethan thoseonpronotum, thesetaebrownishanddecumbent
posterjad. Legsmoderatelylong; profemur thickened, but abruptlyconstricted in
apjca1fourth;protibiasomewhatdilatedapicad,hollowedinbasalhalfontheinner
margjnandcloselysettledwithshortyellowishsetaeonbasalpartof thehollow,and
alsoprovidedwithfourorsoblackishsetaewithinthehollow;meso-andmetatibiae
sjmple;protarsa1segmentsofmalemoreslightlywidenedthanthoseinfemale.
Abdomenelongate,widestatthefourthvisiblesegment,thennarrowedbothanteriad
andposteriad,allthetergitescoveredwithfinebrownishpubescence;basalfourvisible
1ergjteseachshallowlyandtransverselydepressedalongthebase,anddenselycovered
wjthcoarsebutmuchsmaller puncturesthanthoseonelytra, fifthvisibletergiteless
denselyandlesscoarselypuncturedthanontheprecedingtergites;preapica1sternite
inmalesubtriangularlyexcisedatthemiddleofposteriormargin.
Malegenital organwellsclerotizedwiththeexceptionofdorsalsideofmedian
lobe, elliptical, almost symmetrical. Median lobespoon-shaped, broadest near the
middle, thennarrowed towardsapex,whichisna1Towlyrounded, apicalpartsome-
whatprojectedventradinprofile; ventralsurfaceprovidedwithafinelongitudinal
keel oneachsideofthemiddle, butthekeel isobscureinapical third. Parameres a
littlelonger thanmedianlobe,eachcurvedinwardsinapicalhalf,gentlyconstricted
beforethemiddleandlessstronglywidenedapicad thanbasad.
New NazerisfromSouth China 133
Typeseries. Holotype: ,allotype: Yu'an-shannear KunmingCity, Yunnan
,
Province, South China, 5-XI-1992, Y. WATANABEleg. Paratypes: 12 10
, ,
samedataas for theholotype; l3 5 ,same locality aridcollectorasfor the
,
holotype, 6-XI-1992.
,sfr,Our,o SouthChina(YunnanFrov).
.
Thepresentnewspeciesissimilaringeneral appearancetoN talwanus ITO from
Taiwan, but differs from the latter in thepunctureson thepronotum, thenarrower
elytraanddifferentconfigurationof genitalorganin themale.
Notes. All thespecimensofthetypeseriesof thisnewspecieswerefoundinthe
litterzoneofatemperateforestonYu'an-shanatanaltitudeofabout2,130m.
ThespecificnameisgiveninhonourofProfessorZHANGHanyun,ViceDirector
ofKunmingBranch,AcademiaSinica,whohelpedtheauthorsinsearchingforsoil-
livingstaphylinidbeetlesintropical forestsofYunnanProvinceinSouthChina.
要 約
: 渡辺 明・??ll 鵯し年 中 国云南省 明市郊外で採集されたNazeris属の1新種. - 1992年に実
施された中日tt同学術調査によって, 中国云南省 明市郊外の玉案山の林床に・積した腐葉層から採
集された Nazeris属の1種を検した結果, 新種と判定されたので下記のとおり命名記載した.
Nazeris zhangi Y. WATANABEet XIA0
本種は, 雄交尾器の形状からみて, 台湾の玉山および合能次山から記載された N taiwanus種群に
1,,, 近縁の種と考えられるが, 前11背{板はやや密に 組 く点刻され 11目 状構造が認められず 上 は前
, 月l阡板wより明らかに幅狭く ま た雄交尾器中葉はスプーン型を呈し, 端が順方に上反しているので
区別できる.
新種名は, 今回の云南省での調査に種々のご配1t、iiをいただいたi?1?_f中111科学院i't明分院副院長
に献名したものである.
References
BERNHAUER,M., & K.SCHUBERT, l912. Staphylinidae111. InJUNK, W., &S.SCHENKLING(edS),
Coleopterorun1Cata1ogus,pars40(pp.191-288). W.Junk,Berlin.
& 0.ScHEERpELTz,1933. StaphylinidaeVII (Supp1.1). Ibid.,pars l29(pp 989-1500). W.
Junk,Berlin.
ITO,T.,1985. OnthespeciesofNazerisfromTaiwan(Coleoptera,Staphylinidae). Ent.Re、,.Japan,
50:53-57.
KOCH, C,1939. Uberneueunci wenigbekanntepalaarktischePaederinae(Col.Staph),111. Ent.
BI.,35:156-172.
ZHENG,F.,1992. FournewspeciesofthegenusNazer!'sFAuvELfromChina(Coleoptera:Staphy-
linidae,Paederinae). Actaent.sin.,35:87-91. (InChinese,withEnglishsummary)