A New Guizhaphaenops (Coleoptera, Trechinae) from Western Guizhou, South China

2004·4.1 MB·

by  Ueno, S-I

Eht1・a,「okyo,32(1):l5-21、May31,2004
ANewGuizhaphaenops(Coleoptera,Trechinae) from
WesternGuizhou,SouthChina
Shun-lobi UENo
DepartmentofZoology,NationalScienceMuseum(Nat.Hist)
3-23-1Hyakunin-cho,Shinjuku,Tokyo,169-0073Japan
and
JingchengRAN
ManagementofMaolanNationalNatureReserve,
131Shichanglu,YupingZhen,LiboXian,
Guizhou,558400P.R.China
Abstract AnewcavespeciesofthetrechinegenusGil二l/1lphaenopsisdescribed
fromZhijinXianinwesternGuizhou.SouthChina,underthenameofG.(s.str)二hi/men-
sis. ItiscloselyrelatedtoGst1-1atusS.UENo,butisreadilyrecognizedonitselongate
elytra with less prominent humeral angles. It usually coexists with Z1/1jlnap/1ae,lops,
thoughevidentlylessdifferentiatedthanthemembersofthelattergenus.
Describinganaphaenopsoidtrechinegenuswiththreespecies fromZhijinXian
inwesternGuizhou, wehavenoticed that themembers of this remarkablegenus,
namedZhjjinaphaenops,usuallyoccur incoexistencewithaGuizhaphaenopsinthe
samelimitedhabitats,andthattheformerbecamemoreprofoundlydifferentiatedthan
thelatterwhichcouldberegardedasalater immigrant (cf.UENo &RAN,2002,pp.
47-48,etc.).WearegoingtodescribethenewGuizhaphaenopsinthepresentpaper
underthenameofG.(s.str)zhijlnensis.
Thisnewspeciesisclosely relatedtoG.striatusS.UENo (2000,pp 251, 255,
figs 6-7, 10) fromDuolinDongCave, whichisabout 63kmdistant to thesouth-
southwestinabeelinefromChengguan,thecentreofthedistributionalareaofG.zhi-
jinensis,butisreadilydistinguishedfromitbythedifferentconfigurationoftheelytra.
LiketheotherknownspeciesofthesubgenusGuizhaphaenops, itisincrediblyvari-
able,notonlyinsizebutalsoinmany otherpointsincludingtheelytra1chaetotaxy.
Thesmallestspecimenof thetypeseries isonly three-fourthsof thelargest onein
body length,andappearsspecificallydifferent fromthelatter.Theprothorax isvari-
abletosomeextentinconfiguration,aboveall intheshapeofhindangles.Theanterior
dorsalporeonthethirdelytralstriaiseitherpresentorabsent,orpresentonlyonone
l6 Shun-lobiUENoandJingchengRAN
side;evenifpresent,itusuallybearsadegeneratedsetamuchshorterthantheposterior
onethoughsometimesbearingafullydevelopedsetaandoftenlackinginlt.Themale
genitaliaarealso variable in length, thicknessandother minor details. Besides, all
thesevariationsarenotgeographicalbutindividual,sothat theycannotbeused for
recognizingsubspecies.Inthepresentpaper,therefore,wearegoingtoregardallthe
specimensfromfivedifferentcavesasbelongingtoasinglevariablespeciesnotclassi-
fiedintotwoormoregeographicalraces.Theonlyexceptionisasinglefemale from
ZhijinDongCave,whichmaybediscriminatedasasubspeciesorevenasaseparate
specieswhenadequatematerial isavailablebyfutureinvestigations(cf.Notesfollow-
ingthedescriptionofthenewspecies).
Theabbreviationsusedhereinarethesameasthoseexplainedinpreviouspapers
bythefirstauthors'.
Beforegoing further,wewishtoexpressourheartfelt thankstoMr.FANTingof
theAcademiaSinicaand theauthoritiesofZhijinXian for their kindsupport ofour
fieldinvestigationsmadeintheZhijinarea.
Guizhaphaenops(s.str)zJtifine,tsisS.UENoetRAN,sp
nov.
(Figs.1-3)
Length: 5.80-8.00mm (from apical margin of clypeus to apices of elytra);
6.45-8.85mm(includingmandibles).
Closely similar to G. st1・latusS. UENo, withwhich it agreesinmost important
features,buttheelytraaremoreelongateonanaverage,withmoreobtusehumeralan-
glesandlessamplebasalparts.ColourandmicrosculptureasinG.striatus.
HeadasinG.striatus,similarlydevoidoftheposteriorpairofsupraorbitalsetae;
HL/HW l.18-1.34(M I26),HL/PL0.86-0.97(M0.91);antennaevariableinlength,
usuallyreachingapical thirdofelytra,sometimesreachingonlyapical two-fifthsof
elytra, especially in females.Prothoraxas inG. striatus thoughusuallya littlemore
contracted at base, widest at about middle or a little before that level; PW/HW
1.30-1.38(M I34),PW/PL0.92-1.00(M0.97),PW/PAca.158-1.78(Mca.170),
PW/PBca.167-1.86(Mca. 174),PB/PAca.092-1.04(Mca.098); frontangles
usuallydistinctthoughsmall;hindanglesusuallymarkedthoughveryobtuse,some-
timescompletelyroundedoff;basebrieflyandveryslightlyemarginateoneachside
insidehindanglewhenthelatter isdistinctlymarked;postanguIar pair ofmarginal
setaemissing.
Elytrarelativelyelongate,widestataboutmiddle,andalittlemoregraduallynar-
rowed towards bases than towards apices; EW/PW 1.71-1.92 (M 1.81), EL/PL
2.84-3.13(M2.98),EL/EW 160-1.81(M I 70);humeral anglesveryobtuse, almost
rounded;prehumera1bordersnearlystraightandmoderatelyoblique;humeralmargins
almost invisibly serrulateandvestigially ciliated;sidesnearlystraight behindshou1-
NewGtli'/laphae,lopsfromWeslemGuizhou
l7
s Fi9 aP1/aeno - S-St「-)Zﾍ1y'nensl SuENoet N,sp nov., from wankeDongcaveal
ouc ,
18 Shun-lobiUENoandJingchengRAN
3
、 /
、一_/
1 l
0.4mm
Figs 2-3. Malegenitaliaof(tliz/1ap/1aenops(s.str)z11ljinenslsS.UENoetRAN,sp nov., fromWanke
DongCaveatHouchang;leftlateralview(2),andapicalpartofaedeagus,dorso-apica1view(3).
ders,then feeblyarcuate,andratherabruptlyroundedatapices,whichareeithercon-
jointlycurvedor formingasmallobtusere-entrantangleatsuture;striaesuperficial
thoughnearly entire,shallower than inG.stnatus, indistinctly crenulate,becoming
nearlyobsoleteatthesidesandinapicalareas;scutellarstrictoevanescent; apicalstri-
olerudimentary;stria3originally with twosetiferousdorsalpores af t/7-1/6and
2/5-1/2frombase,respectively;inamaleparatype,anextrasetiferousporepresenton
theleftelytronbetweenthenormalanteriorandposteriorpores;posteriordorsalpore
alwayssetiferousandordinarilydeveloped;anteriordorsalporevariable,eitherpresent
orabsent,orpresentonlyononeside,usuallysetiferousifpresent,thoughquitevari-
ableinthedevelopmentofsetaeandsometimeslackinginit;preapica1porealwaysab-
sent.
VentralsurfaceandlegsasinG.strlatus,thoughthepubescenceonventritesis
rathersparseonapicalandpenultimateones.
Malegenitalorganverysmallandlightlysclerotized,markedlydifferent fromthat
ofG.striatusintheslendererapicalpart,stronglybentbasalpart,andacicularapical
partofcopulatorypiece.Aedeagusonlyone-fifthaslongaselytrainmedium-sizedin-
dividuals,proportionallyalittlelargerthanthatinsmallindividuals,veryslender,reg-
ularlyarcuate,andnearlyparallel-sidedinprofile,withlargebasalpartandshortapi-
cal lobe; basal part ventrallydilated inprofile,withsmallbasalorificeandlargepro-
trudentsagittal aileron; viewed laterally,apical part gradually tapered toapical lobe,
whichisshort,gentlyreflexeci,andbluntattheextremity;vieweddorsally,apicalpart
NewGtltz/1ap1/aenopsfromWesternGuizhou 19
narrowly roundedat theextremity; ventral marginwidely andevenly emarginate in
profile.Copulatorypieceaboutone-fourthaslongasaedeagus,narrow,acuminate,and
formingacicular apical part.Stylesshort,with relatively narrow apical parts,each
bearingfourorfiveapicalsetae.
Typeseries. Holotype: ,allotype: ,paratypes:9 4 (ind.1tenera1 ),
,
15-X-2002,S.UENoleg.AlldepositedinthecollectionoftheDepartmentofZool-
ogy,NationalScienceMuseum(Nat.Hist),Tokyo.
Type locality. Limestone cave called Wanke Dong (formerly called Aoke
Dong),1,740minaltitude,atHouchangCunofSantangZheninZhijinXian,western
Guizhou,SouthChina.
Furtherspecimensexamined. 4 GanlaoDongCave,1,610malt., Houchang
,
Cun,SantangZhen,ZhijinXian,15-X-2002,S.UENo&J.RANleg;7 ,19(ind.1
tenera1(5),Dahei DongCave, 1,530malt., Mawozhai Cun,Houzhai Xiang, Zhijin
Xian,15-X-2002,S.UENo &J. RANleg; 7 2 (ind. 1tenera1 ),Shepayan
,
DongCave,1,370malt.,HehuaCun,ChengguanZhen, ZhijinXian,13-X-2002,S.
UENo&J.RANleg;1e,LianhuaDongCave,1,330malt.,XingxiuCun,Chengguan
Zhen,ZhijinXian, 13-X-2002,S.UENoleg;19,ZhijinDongCave, 1,310malt.,
GuanduCun,BabuZhen(nowcalledGuanzhaiCunofGuanzhaiXiang),ZhijinXian,
19-VII-l996,LIDaoHongleg.AllinNSMT.
Notes. Thisnewspecieshasso farbeenknown fromsixcavesinZhijinXian,
threeofthem(WankeDong,GanIaoDongandDaheiDong)lyingintheSantangarea
atthesouthwesternpart, two(ShepayanDongandLianhuaDong) intheChengguan
areaatthecentralpart,andone(ZhijinDong) intheBabuareaat thenorthernpart.
Specimensfromthefirstfivecavesaregenerallysimilarintheirmorphology,andthe
rangesoftheirvariationslargelyoverlaponeanother.Rangesoftheirbodylengthsand
standardratiosoftheirbodypartsareas follows:
<Ganlao Dong しave> Body length: 6.70-7.65mm [7.40-8.50mm incl
mandibles], HL/HW 1.24-1.29 (M 1.27), HL/PL 0.86-0.93 (M 0.89), PW/HW
1.32-1.39(M I35),PW/PL0.93-0.97(M0.94),PW/PAca.168-1.79(Mca.174),
PW/PB ca. 169-1.77(Mca. 174), PB/PA ca. 096-1.05 (Mca. 1.00), EW/PW
1.81-1.85(MI84),EL/PL2.83-2.96(M2.89),EL/EW164-1.71(MI67).
<I;)ahei L'eng しave> Body length: 6.35-7.70mm [7.05-8.50mm incl
mandibles], HL/HW 124-1.36 (M I30), HL/PL 0.88-0.94 (M 0.91), Pw/Hw
1.32-1.44(M I37),PW/PL0.93-1.02(M0.96),PW/PAca.167-1.81(Mca.173),
PW/PB ca. 178-2.00 (M ca. 185), PB/PA ca. 087-1.00 (M ca. 093), EW/PW
1.71-1.86(MI.80),EL/PL2.87-3.01(M2.93),EL/EW1.65-1.72(MI.69)
<Snepayan uong しave> Body length: 6.40-7.60mm [7.05-8.30mm incl
mandibles], HL/HW 1.17-1.37 (M 1.27), HL/PL 0.82-0.98 (M 0.89), PW/HW
1.29-1.38(MI35),PW/PL0.91-1.02(M0.95),PW/PAca.157-1.73(Mca.167),
PW/PBca. 160-1.76 (M ca. 168),PB/PA ca. 096-1.05 (M ca. 1.00), EW/PW
20 Shun-lobiUENoandJingchengRAN
1.74-1.85(M I.79),EL/PL2.76-3.05(M2.87),EL/EW1.68-1.74(M I.70).
<Liannua L'eng しave> Body length: 6.55mm [7.20mm incl mandibles],
HL/HW 1.20,HL/PL0.85,PW/HW1.40,PW/PL 0.99,PW/PA ca. 1.70,PW/PB ca.
1.71,PB/PAca.099,EW/PW169,EL/PL2.88,EL/EW172.
As is readily understood fromtheabovelist, theDahei Dongspecimens are
prominentintheexceptionallyhighPW/PBvalue.Thisismainlyduetoreductionof
thepronota1hindangles,whichareusuallyroundedoff.Inasmallmale,theestimated
widthofthepronota1baseattainsmerelytoahalfofthatof thewidestpart Onthe
other han theaedeagusisalittleshorter withsmaller basal part in thespecimens
fromtheChengguanarea(ShepayanDongandLianhuaDongCaves) thaninthetype
series.Incidentally,ShepayanDongCave,whichwasnotdescribedinour2002paper,
lies between ZiyanDongand XiaoyaoDongCaves, both ofwhichharbour Zhiji-
naphaenopspubescensbutnoGuizhaphaenops.Itisasinkswallowingthewaterofa
shortsurfacestream. (;iuizhaphaenopswas foundatthebottom, frombeneathaheap
ofmuddystonesandvegetabledebriswashedinfromtheoutside.
Whatisofspecial interestisafemalespecimentakeninZhijinDongCave. Hav-
ingbeenpreservedlonginspiritus,itisdiscolouredandwhollydarkene andbesides,
theelytraarepartiallycrushed.However,itdiffersfromall theotherspecimensofG.
zhijlnenslsinthenarrowprothoraxwhichiswidestatthree-fifths frombaseandhas
thesidesalmoststraight inbasal fourth.Standard ratiosofbody partsare:HL/HW
1.18,HL/PL0.84,PW/HW1.21,PW/PL0.86,PW/PAt.48,PW/PB1.63,PB/PA0.91,
EW/PW199,EL/PL2.84,EL/EW166.Thebodymeasures7.35mmfromtheapical
marginofclypeustotheapicesofelytra,and7.95mmincludingmandibles,andthe
antennaearerelativelyshort,onlyreachingapical two-fifthsofelytra. It istherefore
mostprobablethat theZhijinDongpopulationofGulzhaphaenopsbelongstoasub-
speciesofitsownoraspeciesindependentofG.zhijlnensis.Unfortunately,however,
we failed inobtaining freshmaterial of thisGuizhaphaenops in ZhijinDongand
nearbycaves,andprefertoleavethefinaldeterminationofitssystematicstatusfor fu-
tureinvestigations.
要 約
上野俊一・冉 景丞:中国一?州省の西部で発見されたGu,z/ap/,ae,lops属チビゴミムシの1新
種. - 中国rli州省の西部, ?只金 の石灰洞6カ所から, Ci,a::1,aphaenops属のチビゴミムシ
のl新種を記載し, これにG,az1/ap/,aenopsz/,ljinensisS.UENoetRANという新名を与えた. この
種は, 同所的に分布するZhJiinap/,aenops属のメクラチビゴミムシ類に比べて種分化の程度が低
く, しかも種内の変異はぃちじるしぃ. おそらくZhijinaphaenopsよりあとから?,?金」iL:付近に
分布を拡げてきて比較的, 新しい時代に定着したものだろう.
NewGtliz/1ap1/ae,lopsfromWesterGuizhou 21
References
UENo, S.-I., 2000. Noteson Gttlzhaphae,lops(Coleoptera, Trechinae),withdescriptionsof two new
species. Elyt・,a, nokyo,28:247-264.
- & J. RAN, 2002. A new genus with three new speciesof aphaenopsoid trechine beetles
(Coleoptera,Trechinae)fromwesternGuizhou,SouthChina. Jspeleo1.Soc.Japan,27:42-59.
VIGNATAGLIANT1, A.,1997. Anewgenusandspeciesoftrog1obiticTrechinae(Coleoptera,Carabidae)
fromsouthernChina. Int.JSpeleo1.,25[for i996]:33-41.
Elyt1・a,Tokyo,32(1):21-22,May31,2004
ANewRecordofAesalussatoz(Coleoptera,Lucanidae)
from Vietnam
KunioARAYA1)andShuheiNoMURA2)
l)GraduateSchoolofSocialandCulturalStudies,KyushuUniversity,
4-2-1Ropponmatsu,Chuo-ku,Fukuoka,810-8560Japan
2)DepartmentofZoology,NationalScienceMuseum(Nat.Hist),
3-23-1Hyakunin-cho,Shinjuku,Tokyo,169-0073Japan
AsthefirstrecordofthelucanidgenusAesalttsfromtheIndochinaRegion,Aesalussato1
wasoriginally describedbasedon thespecimenscollectedonMt.Pan, northeasternLaos
(ARAYA&YosHIToMl,2003), butnoadditionalspecimenshavebeenrecordedsincethen.Re-
cently,duringasecondexpeditionofajointpartyofJapaneseandVietnameseentomologists,
made in2002, thesecondauthor collectedanadditional maleof this species inLaoCal
Provinceof North Vietnam.Here,wewillreportthenewrecordofthisinterestinglucanidbee-
tlefromVietnam. Inthefollowingdescription,PELdenotespronotum-elytralength,andEW
elytrawidth.
Specimenexamined. 1(3,DocTramTon,nearSaPa, LaoCalProv.,N.-Vietnam,21-VI-
2002,S.NoMURAleg.
Notes. ThepresentVietnamesematerial wascapturedbyalight-trapsetonthepassat
about1,850minaltitude,whosesurroundingsweregrasslandwithshrubbery,andsteepslopes
werecoveredwithanevergreenbroad-leavedforest.Itwascloudywithoccasionaldrizzledur-
ingthelight-trapping,andtheindividual ewtolightbetween20and210'clock.These facts
indicatethatthisspeciesisanactivenocturnal ier.TheVietnameseindividualisalmostidenti-
calwiththetypespecimensfromLaosinboththeexternalandgenitalicmorphologies(Figs.