A New Apterous Ochthephilum (Coleoptera,staphylinidae) from Yunnan Province,Southwest China

5 Pages·1994·5 MB·English

Elytra, Tok、,o,22(l):109-113,May15,1994
A NewApterousOchtheph1'tum(Coleoptera,Staphylinidae)
from Yunnan Province,Southwest China
Yasuaki WATANABE
LaboratoryofEntomology,TokyoUniversityofAgriculture,
Setagaya,Tokyo,156Japan
and
XIA0 Ning-nian
LaboratoryofInsectTaxonomy,KunmingInstituteofZoology,
AcademiaSinica,Kunming,Yunnan,650107China
Abstract Anewspeciesofthegenus0(・/lt/1ep1/i1ll1,1isdescribedunderthenameof
0.、,un,Ia,Ie,1se,withillustrationsofhabitus,secondarysexualcharacteroftheabdon、inal
slernilesandthegenitalorganinthemale. Itwasfound fromunderdeadleavesand
jnthefillerzoneoftropicalrainforestsinXishuangbannaof YunnanProvince,South-
west China.
so farashasbeenknown to theauthors, fivespeciesofthegenusOcht/1ep/1i/um
have hitherto been known from China. Three of them werereported from North
ChinabyBERNHAUER(1928,p 38)andL1andCHEN(1990,P. l7),andtheothe「two
fromSouthChinabyBERNHAUER(1941,p 227)andSCHEERPELTZ(1933,P.1297).
BytheSine-Japanesecooperativestudyonthesoil faunaof tropical forestsin
Yunnan provinceofSouthwest China,made twicein theendofOctober, 1992, and
themiddleofSeptember,1993,aninterestingspeciesofthegenus0('ht/1ep/1l/11mwas
found from under dead leavesand in thelitter zoneof tropical rain forestsin Xi-
shuangbannaofYunnanProvince,SouthwestChina. Afteracarefulexamination, it
hasbecomeclear that it isnew tosciencefor reasonofdisagreementwiththeknown
congenersintheshapeofthehead,antennalarticulationandconfigurationofthesec-
ondarysexualcharacteroftheabdominalsternites. ItwillbedescribedinthePresent
Thehole-andallotypesof thenewspeciestobedescribedaredepositedin
paper.
theco1lectjonoftheShanghai InstituteofEntomology,AcademiaSinica,China,and
theparatypesaredistributedtothecollectionof the KunmingInstituteofZoology,
AcademiaSinica, China,NationalScienceMuseum(Nat. Hist),Tokyo,and theLab-
oratoryofEntomology,TokyoUniversityofAgriculture.
Beforegoingfurther, theauthorswishtoexpresstheirheartythankstoProfessor
YINWen_yingoftheShanghai InstituteofEntomology,AcademiaSinica,andProtes-
t)ThisstudyissupportedbytheGrant-in-aidNo.04041042forFieldResearchoftheMonbusho
InternationalScienceResearchProgram,Japan.
l ie YasuakiWATANABEandXIA0Ning-nian
sor Gentaro IMADATEof Tokyo Medical and Dental University for their kind help
through theSine-Japanesecooperativestudy. Deep gratitude is also due to Dr.
Shun-lobiUENooftheNationalScienceMuseum(Nat.Hist),Tokyo,Assoc.Professor
LuoZhi-yioftheShanghai InstituteofEntomology,AcademiaSinica,andMr.Yasu-
toshiSHIBA'IA, Tokyo, for theiradviceonthepresentstudy, and toProfessorHiroshi
TAMuRAof Ibaraki University,Mite,andthemembersof theSine-Japanesecooper-
ativestudy for their kindcollaborationinsearchingfor thisnewspeciesinthefield.
OchthephiiumJ'unnanensesp nov
(Figs.1-5)
Bodyelongate,parallel-sidedandsomewhatdepressedabove. Colour black and
shining,withelytranarrowlyandobscurelyreddishalongposterior margin,mouth
parts, antennaeandlegsreddishbrown,thoughthefemoraareyellowish.
Male. Headsubtrapezoida1andsomewhat depressed above, apparently longer
thanbroad(length/width=1.17),widestat posterior fourthandmorestronglynar-
rowedanteriad thanposteriad, withlateralsidesgentlyarcuateinposterior thirdand
nearlystraightinanteriortwo-thirds;postocularpartlong,nearlythreetimesaslong
asthelongitudinaldiameterofeacheye;surfacedenselycoveredwithrugoseumbilicate
punctures,whichbecomefinerandcloser inlatero-posteriorparts, thoughsmoothin
f「entalareabetweenantennaltubercleswhicharewellelevatedandglabrous. Anten-
naegeniculate, rather slender and not thickened apicad, three proximal segments
polished, the remainings opaque, 1stsegment thelongest and dilated towards the
apex,7timesaslongasbroad,2ndshort,lessthanone-fifthaslongas1standtwice
aslongasbroad,3rdelongate,alittlelonger than2nd(3rd/2nd=1.25)andtwiceas
long as broad, 4th somewhat shorter than 3rd (4th/3rd=0.80) thoughmore than
1.5timesaslongasbroad,5thto9thequal inbothlengthandwidthtooneanother,
eachalittlelongerthanbroad(length/width=1.40), 10thslightlyshorter than 9th
(loth/9th=0.91) thoughsomewhat longer than broad(length/width=1.28), apical-
most longer than loth (apicalmost/10th=1.19) andmorethan t5 times as longas
broad.
Pronotumsubcylindricalanddistinctly longer thanbroad (length/width=1.23),
slightlyshorter(pronotum/head=0.92)andalittlenarrower (pronotum/head=0.88)
thanhead,widestbetweenanterioranglesandapparentlynarrowedposteriad; lateral
sidesalmoststraight,butslightlyemarginatebehindthemiddle;anteriormargingently
rounded,posterioronealmoststraightthoughslightlyemarginateatthemiddle,anterior
anglesbluntlyangulate,posterioronesnarrowlyrounded;surfacemuchmorecoarsely
andlesscloselypuncturedthanonhead,bearingalongitudinalsmoothareaalongthe
median line,theposteriorhalf of whichisalittleelevated. Scutellumsubtriangular,
surfacesomewhatconvexandprovidedwithafewsetiferouspunctures. Elytrasquare
and somewhat depressed above, evidently longer than broad (length/width=1.19),
slightlybroaderthan(elytra/pronotum=1.03)butequal inlengthtopronotum;lateral
NewApterous0t・/It/lop/lilt//nfromSouthwestChina
Fig.1. Ocht/1ep1/iitl,lly11,Inane,lsesp nov.
,
Scale:2.0mm.
.
1It
/l
Fig 2. Last abdominal sternite in male of
0e/lthep/1ilumyu,Ila,tensesp nov. Scale:
0.5 mm.
sidesalmoststraight,posteriormargin forminganobtusere-entrant angle,posterior
anglesrounded;surfacedenselycoveredwithcoarseumbilicatepunctures;eachepi-
pleuronprovidedwithafinelongitudinalkeelwhichisobscurebehindhumeralangle.
Hindwingsdegeneratedtominutelobes. Legsrelativelyelongate, anterior tarsi thin.
Abdomen elongate and almost parallel-sided; basal threevisible tergites each
transverselyandshallowlydepressedalongbasalmarginandmoderately closelycov-
ll2 YasuakiWATANABEandXIAoNing-nian
'、 /
、、、・.1・11、、--'i・:..'i,'','1・
5
Figs 3-5. Malegenital organofOcht/1ephl1″lnytm,lane,1sesp nov.; ventral view (3), lateral
view(4),anddorsalview (5). Scale:1.0mm
eredwithcoarsesetiferouspunctures,apicalthreevisibletergitesmoresparinglyand
morefinelypuncturedthanontheprecedingthreetergites;preapicalsterniteprovided
withadeepV-shapednotchat themiddleofposteriormargin.
Genitalorgansclerotizedexcept formembraneousmedianlobe,elliptical,almost
symmetrical. Median loberelatively broad, gradually narrowed apicad and gently
rounded at the apex. Paramereselongate, remarkably longer than median lobe,
curved dorsad in posterior two-thirdsin profile; eachsomewhat constricted behind
themiddleandwidenedbeforetheapex,curvedinwardsinapicalhalfandendingina
smallacutedenticledirected outwardsasseen from ventralside.
Female. Similartomalein faciesandsize,thoughthepreapica1sterniteisround-
edatthemiddleofposteriormargin.
Typesol'ies. Holotype: ,allotype: , tropical rain forest (Tropical Botanical
Garden), Menglun, Mengla County, Xishuangbanna, Yunnan Province, Southwest
China,29-X-1992,Y.WATANABEleg. Paratypes:1 ,samelocalityasfortheholo-
type, l0-V-l992,XIAoN.1eg;4 l ,samedataasfortheholotype;1 2
, , ,
samelocalityandcollectorasfortheholotype,28-X-1992,3 2 samelocality
,
as for theholotype, 29-X-l992,S. UENo leg, 4 9 locality as for the
, same
,
holotype,10-IX-l993,Y.WATANABE&XIAoN.leg;1 ,samelocalityandcollector
as for theabove,11-IX-1993;1 ,samelocalityandcollector asfor theabove, 12-
IX-1993; l ,tropical rainforestinalimestoneareanearTropicalBotanicalGarden,
Menglun, MenglaCounty, Xishuangbanna, YunnanProvince,Southwest China,30-
X-l992, Y. WATANABEleg ; 1 , same locality as for theabove, 10-IX-1993, Y.
WATANABE& XIA0N.1eg.; l ,samelocalityanddateasfortheabove,K.FUKUYAMA
leg; 6 l MenglaNatureProtectiveArea, MenglaCounty, Xishuangbanna,
, ,
NewApterous0c/1t/1ep/1i11″11fromSouthwestChina 113
YunnanProv.,Southwest China, l3-IX-1993,Y.WATANABE& XIA0N. leg.
1'sfr,'加tlon. SouthwestChina(YunnanProv).
Notes. Thepresentnewspeciesissimilaringeneralappearanceto0.sem1opacum
(EppELsHEIM)(l895,p402) fromPegu,butdiffersfromitinthefollowingpoints:head
subtrapezoida1,5thto9thantennalsegmentsalmostequal inlengthtooneanother,
legsreddishbrownexcept foryellowishfemora,5thabdominalsterniteinmalenearly
truncateoronlyfeeblyemarginateatthemiddleofposteriormarginandlackingclearly
impressedsmoothspacebeforethemiddleofposteriormargin.
All thespec;minsofthisnewspecieswere found fromunderdead leavesandin
thelitterzoneof the tropical rain forest of Tropical Botanical Garden,Academia
Sinica and its vicinities.
要 約
渡辺泰明・11?f 一f年: 中国云南??lから採集された後 のi?化した 0chthephilum属の1新種. -
1992および1993年の両年にわたっで 施された中日共一同学術調査によって,中国云南省西双版納の熱
値物園およびその近隣地域の, 熱,l雨林の林床に」Ill積した腐集1,'1や落ち葉の下から, Ochthephilum
属の1l重fが採集された. この極は後iiiが,i?化したきわめて興味深いもので, 詳細に検討した結果, 新
重と判定されたので, 下記のとおり命名,ii成i した.
Ochthephilumyunnanense Y. WATANABEet XIAo,SP nov.
本種は, 体長および外部形態は EPPELsHEIM によって Peguから記載された 0. semi'opacum に
59, 類似しているが, 頭部は 1形を呈し,角角ｶの第 か ら 節 までの各節はほほ同長で 1支1は黄色い腿節
を除いては赤褐色を呈し, 雄の第5順 には明瞭な第二:次性徴が表われないなどの特徴によって区別
される.
References
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12:17-39.
- 1941. NeueStaphylinidenausChina. Elf.B/.,37:226-228.
EppELsHEIM,E.,1895. ZurStaphylinenfaunaOstindiens. Dtsc/1ent. Z.,1895:385-407.
L1,J.,&CHEN,P.,1990. ThefaunadistributionofStaphylinidaeinnortheasternChina. J. Not/least
,Io・,,t1. U,1i'、,., (Nat.Sci.Ed),(1):13-20. (InChinese)
ScHEERPELTz, 0., l933. StaphylinidaeVII (Suppl. I). /'1JUNK, W.,&S.SCHFNKLING(eds), Cole-
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