Four New Laena Species (Coleoptera，Tenebrionidae)from Yunnan,Southwest China

6 Pages·1994·6.1 MB·English

by  Masumoto, K

Elytra,Tok、.,o,22(1):165-170,May15,1994
Four NewLaenaSpecies(Coleoptera,Tenebrionidae)
fromYunnan,Southwest China1)
Kimio MASUMOT0
InsljtuteofHumanLivingSciences,0tsumaWomen'SUniVe「Sity,
12sanbancho,Chiyoda-ku,Tokyo,102Japan
and
YINWen-ying
shanghai InstituteofEntomology,AcademiaSiniCa
Shanghai,200025China
FournewspeciesofthetenebrionidgenusLaenaaredescribedf「omthe
Abstract
mountajnsjnthevicjnitiesofDaliCity,YunnanProvince,SouthwestChina,uncle「the
nan、esL.(s.str)yuz/ule,Isis,L.(s.str)vial,1anensis,L.(s.str)da/iensisandL (S・St「・)
x-laoi (Adeliini,Tenebrionidae).
ThegenusLaenaisagroupofsmallapteroustenebrionidbeetlesusuallyfound
underhumusjntemperatebroadleaved forests. Inthecourseofthezoo1o9iCa1Su「Vey
ofasjno_JapanesejointpartyofentomologistsonsoilanimalsinYunnan,D「.Shun-
IchjUEN0andDr.YasuakiWATANABEmadeasmall collectionofLaenaSpecimens
fromthemountainsinthevicinitiesofDaliCity. TheyweresubmittedtotheauthO「S
for taxonomjc study, and were found to contain four new species. They Will be
descrjbedjnthepresentpaperunderthenamesLaena(s.str)yuz17uenSSi,L.(S・St「・)
yunMnens1's, (s.str)dail'e7'slsand (s.str)xfaol.
. .
Theholotypesofthenewspeciestobedescribedaredepositedinthecollection
oftheShanghaiInstituteofEntomology,AcademiaSinica.
Theauthorswishtoexpresstheir deepest appreciationtoDr.Shun-lobi UENo,
NatjonalScjenceMuseum(Nat.Hist),Tokyo,Prof.Dr.YasuakiWATANABE,Tokyo
UnjversityofAgriculture, andMr. XIAoNing-nian,KunmingInstituteofZoology,
AcademiaSinica, for their kind helpextended to theauthors in thecourseof the
presentstudy. Thanks are also due to Dr. Yasuhiko HAYAsHI and Mr. Kiyoshi
ANDo,OsakaColeopterologicalSociety,fortakingphotographsinsertedinthispaper.
Lao,ta(s.str )yuzlMe,Isissp nov
(Fig.1)
Male. Dark reddish brown, with basal portionsof antennae, maxillarypalpi,
l) Thisstudy issupported by the Grant-in-aid No. 04041042 for Field Research of the Mon-
busholnternationalScientificResearchProgram,Japan.
166 KimioMAsuMoToandYINWen-ying
tarsi,etc., lighterincolour,marginsofgenae,apexofpronotum, femoraandmiddle
portion ofabdomenmuchdarker,eyes black; forebodyslightlymicro-shagreened
aboveandsericeouslyshining,elytramorestronglyshiningthanforebodyabove;each
surfacegentlyclothedwithfineshorthairs. Bodyratherelongate,moderatelythick-
enedanddistinctlyconstrictedbetweenprothoraxandelytra.
Headsubquadrate, irregularlyandcoarselypunctate;clypeustransverselyhex-
a9ona1andgentlyconvexabove, truncatein front,distinctlyclothedwithlonghairs
oneachside;genaeratherstronglyraisedanteriad,roundlyproducedobliquelyfor_
wards,withpostero-ocularportionsweaklyproducedlaterad; fronswithanoblong
impunctateportioninmiddle, fronto-clypea1suturefineandsublinear;eyesmedium-
sized, weaklyconvex laterad, diatoneabout 6 timesthewidthoftransversedjameter
of an eye. Antennae reachingbasal portionof pronotum, ratio of the length of
eachsegmentfrombasaltoapical:0.42,0.2,0.35,0.21,0.23,0.23,0.23,0.23,0.24,0.25,
0.47.
Pronotumsubcordate,1.2timesaswideaslong,widestatapical1/3;apexnearly
straight inmiddlewidely, neithermarginednor rimmed; basemoderately rounded
andfinely rimmed; lateralmarginsarcuatelateradand finelyrimmed; front angles
rather distinctlyangulate;discgentlyconvex, ratherclosely,irregularlyandcoarsely
punctate,eachpuncturewithashortdecumbent hair.
Elytraoblongovate,about16timesaslongaswide,2.4timesthelengthanda
littlemorethan t2timesthewidthofpronotum,widestatbasal3/7;dorsumrather
stronglyconvexthoughslightlyflattenedinmiddle, thickest at themiddle;discrather
strongly punctate-striate; intervals gentlyconvex, eachwith of minute and
a ro w
hairedpunctures; apicesproducedposteriad;9thintervalwith threesetiferousumbil-
icatepores, oneatbasal t/5,whichisgentlyprojectedlateradandvisible fromabove,
anotheratapical2/7,andtheotheratapical1/7.
Propleurasomewhatvitreous,strongly,rathersparselypunctateandfinelyhaired;
each femur withoutspine, ratiosof the lengthsof pro-,meso- and metatarsomeres:
0.51,0.32,0.31,0.28, 1.2; 0.62,0.39, 0.31,0.29,1.24;1.31,0.67,0.37,1.53.
Male genitalia fusiform and about 125mm in length; fused lateral lobes I/5
timesthelengthofbasalpiece,withapexnarrowlyrounded.
Bodylength:5.5-5.7mm.
Holotype: DiancangShanMts., Yuzhu Feng(3,500malt), DaliShi, Yun-
,
nan, China, 5-IX-1993, Y.WATANABEleg. Paratype: 1ex., same locality and date
asfortheholotypebut3,550minaltitude,S.-I.UENoleg.
N「otes. Thisnewspeciessomewhat resemblesLaena(s.str),hododendr1'KAszAB,
1977,originallydescribed fromEastNepal,butcanbedistinguishedfromthelatter
by themedium-sizedeyes, closelypunctategenae, andsubcordatepronotumwithan
impressiononeachside. Thenumberandpositionofsetiferousumbilicateporeson
the9thelytralintervalseemtoserveasanimportantfeatureforidentifyingthespecies.
Four New Lae,tafrom Yunnan 167
Lao'Ia(s.str )yunnane,Isissp nov
(Fig 2)
Male. Dark yellowish brown, withmarginsof pronotum,sutural intervalsand
femoradarker incolour,mouthparts, tibiaeand tarsi paler;dorsalsurfacestrongly,
vitreouslyshining,ventralsurfacemoderatelyshining,eachclothedwith rather long
hairs,whicharedistinct inpostero-lateral portionsofelytra. Body ratherelongate,
thickenedposteriorly,distinctlyconstrictedbetweenprothoraxandelytra.
Headwidelypentagonal,gentlyraisedinmiddle,withanimpressioninanterior
portiononeachside,irregularlyandstronglypunctate;clypeussomewhat transversely
elliptical,distinctlyclothedwithratherlonghairs,truncateinfront;genaeraisedand
almost impunctateinapicalportions,sublinearlydivergent forwards indorsal view;
eyesmedium-sized, convex laterad, diatoneabout 5 times thewidth of transverse
diameter ofaneye. Antennaereachingbasalportionofelytra, ratio of the fen9th
ofeachsegment frombasaltoapical:0.41,0.2,0.38,0.23,0.26,0.28,0.29,0.31,0.31,
033,0.46.
.
pronotumshortsubcordate,1.2timesaswideaslong,widest at apical1/3;apex
nearlystraight,slightlymargined inlateral portions; basehardly produced, finely
margined; lateralmarginsmoderatelyarcuatelaterad,finelymargined; frontan9leS
rounded;discgentlyconvex,rathercloselypunctate.
Elytraabout1.6timesaslongaswide,2.6timesthelengthand13timesthewidth
ofpronotum,widest atbasal3/7, thickestat themiddle,andratherstronglyConvex
ondorsum;discwithrowsofstrongpunctures,whichareoftenweaklystriated and
arelargestinthe3rdrow;intervalsslightlyconvex,eachwitharowofspa「SePunc-
tures;3rdintervalwithasetiferousumbilicateporesatapical1/7,7thwithoneatbasal
l/ll,andgthwjththree:oneatbasal t/7,whichisdistinctlyprojectedlateradand
vjsjblefromabove,anotheratapical2/7,andtheotheratapical1/7, thelatte「two
poresbeingmoreorlessprojectedpostero-laterad.
propleurasomewhatvitreous,rathercloselypunctate;eachfemurwithoutSpine,
ratiosof thelengthsofpro-,meso-andmetatarsomeres:0.47,0.32,0.30,0.23,0・89;
0.63, 0.31,0.26,0.23, 1.18; 1.1, 0.68,0.32,1.27.
Malegenitaliarather long(ca. l3mm),withabasalpiecetoothedat theapex
oneachsideandratherdistinctlycurvedinbasalportion.
Bodylength:4.2-4.6mm.
Holotype: ,DiancangShanMts., ZhongheFeng (2,500malt),DaliShi,4-
lx_1gg3, s.-I. UENo leg. Paratypes:10exs.,samedataasfor theholotype;5eXS・,
zhonghe Feng(2,500malt), 4-IX-1993,Y.WATANABEleg; 4exs., ZhOn9heFen9
(2,620malt),3-IX-l993.S.-I.UENoleg;2exs.,ZhongheFeng(2,620malt),4-IX-
1993, Y. WATANABEleg.
ThisnewspeciessomewhatresemblesL.(s.str)prehimalaylcaKASZAB,
Notes.
l977,originallydescribedfromCentralNepal,butcanbedistinguishedfromthelatter
by thebody larger anddistinctly haired, the pronotum gently convex and rathe「
l68 KimioMAsUMoToandYINWen-ying
2 3 4
Figs.1-4. HabitusofLaenaspp. - l, L. (s.str)),llz/ufe,Isissp nov., , holotype;2 ・一(S
St「.)yun'Ia'Ie'1stssp nov., ,holotype;3,L. (s.str)da/iens1'ssp nov.,(j',1、o1olype 4:
(s.str)λ-l'ao'sp nov., holotype.
,
Closelypunctate,elytra1puncturesinrowsnotcoarserthanpronota1ones,andjnter-
valswith5setiferousumbilicatepores.
Laena(s.str)dalieltsisspnov.
(Fig3)
Thisnewspeciescloselyresemblestheprecedingone, Laena(s.str)、,Lmna,1ensls'
SP nov., inhaVin95poresontheelytra,butcanbediscriminatedfromthelatterby
thefollowingpoints:
Male. Piceous,withantennaeandlegslighterincolour,eachsurfacemoreclosely
Punctateandclothed with finer anda littledecumbent hairs. Body morestrongly
constricted between prothorax andelytra; forebodyabovemorethickened, whjle
theelytraarelessso.
Eyesalittlelargerandmorestronglyconvexlaterad,diatoneabout5.2tjmesthe
widthof transversediameterofaneye; fronto-clypea1andfronto-genal bordersjm_
pressed. Antennaewith ratioofthelengthofeachsegment from basal to apical:
0.39, 0.2, 0.35, 0.24, 0.23, 0.23, 0.23, 0.24, 0.28, 0.26, 0.48. Pronotum a little less
than t3timesaswideaslong;basenotmargined.
Elytraslightlymorethant5timesaslongaswide,2.2timesthelengthand12
timesthewidthofpronotum;rowsofpuncturesmoredistinctlystriated;intervalsmore
Convex,eachwitharowofdenserpunctures;3rdintervalwithonesetiferousumbilicate
poreatapicall/9,7thwithoneatbasal t/9,and9thwiththree:oneatbasalt/6,which
isdistinctly projectedlateradandvisiblefromabove, anotherat apical1/5, and the
Four New Lao,1c1from Yunnan 169
otheratapical1/10,thelattertwogentlyprojectedpostero-laterad:apicesmorestrongly
producedposteriad.
Propleuramorefinelypunctate;legsmorethickened:eachfemurwithoutspine;
tibiaegentlyincurved; ratiosofthelengthsofpro-,meso-andmetatarsomeres:0.37,
0.28,0.26,0.24, 1.18 0.57,0.32, 0.28, 0.26,1.2;1.27,0.52, 0.24,1.36.
,
Malegenitaliashorter(ca.1.1mminlength)and thinner,withabasalpiecenot
toothedat theapexoneachsideandlessstronglycurvedinbasalportion.
Bodylength:4.4-4.6mm.
Holotype: LaohuShan (2,200malt), Dali Shi, 3-IX-1993, Y. WATANABE
.
leg. Paratypes:2exs..samedataasfor theholotype.
aena(s.str )_w'act'sp nov
(Fig 4)
Thisnewspeciesalsocloselyrosen、blesL. (s.str )、、tut,1a11enslssp nov.inhaving5
poresoneachelytron,butcanbedistinguished fromthelatterbythefollowingpoints:
Male. Reddis、l brown,withmouthpartsand tarsi lighterincolour;eachsurface
clothed with shorter, decumbent pale hairs. Bodyshorter and m ore strongly con-
strictedbetweenprothoraxandelytra,slightlymoreconvexabove.
Headnarrower,moresparselyandfinelypunctate, withanimpunctateportion
in middle; genae less distinctly divergent forwards; eyes smaller and lessstrongly
convex laterad, diatoneabout 6 times thewidth of transverse diameter of an eye.
Antennae a littleshorter, reaching baseof pronotum, ratio of the length of each
segment from basal to apical: 0.41, 0.2,0.36, 0.22, 0.24, 0.26, 0.27, 0.25, 0.27, 0.29,
039.
.
Pronotum l 3 timesaswide as long, widest at apical 1/3; disc weakly micro-
shagreened:lateralmarginsandbasefinelymargined;hindanglesslightly,obliquely
truncateand feeblysinuatebeforethetruncation.
Elytra alittlelessthan t 6timesaslongaswide,slightly lessthan 2.4 times the
lengthandabout13timesthewidthof pronotum, widest atbasal 2/5;rowsofpunc-
turessparserandnotstriated:intervalslessconvex,eachwitharowoffinerpunctures;
3rd interval with onesetiferousumbilicateporeatapical 1/8, 7th with one at basal
1/l8,and9thwiththree:oneatbasalt/7,whichisdistinctlyprojectedlaterad,another
atapical l/4、andtheotheratapical l/8, thelatter twoporesbeingmoreor lesspro-
jectedpostero-1aterad:apicesmorestronglyproducedposteriad.
Propleuramico-shagreened,morefinely punctateandhaired; ratiosofthelengths
ofpro-,meso-andmetatarsomeres: 0.33, 0.26,0.25, 0.24,0.83;0.43,0.28,0.25,0.23,
0.81 0.77 0.28 026, 124.
. , , . .
Malegenitaliasmaller(ca. 1.1mm in length), with alessstronglycurved basal
piece.
Bodylength:4.0-4.5mm.
Holotype: , DiancangShanMts.,Yuzhu Feng(3,290malt), DaliShi,5-IX-
170 KimioMAsUMoToandYINWen-ying
l993,S.-I. UENoleg. Paratypes:1ex.,samedataasfor theholotype;3exs.,Yuzhu
Fen9(3,500malt),5-IX-l993, Y.WATANABEleg.
要 約
益本t-.lsit '?ト 文英:中国云南省産チビヒサゴー」ミムシダー、,シ属(Laena)の4新種 (ゴミムシダマ
シ科, チビヒサココミムシダマシ族). - 1993年8~9月, 中国云南省大理付近で, 国立科学1専物
館上野俊一博士および東京農業大学渡辺 明教授によって採集されたチビゴミムシダマシを検討した
結果, 4種を新種とみとめ, それぞれ Laena (s.str)yuzhuensis, L. (s.str) yunnanensls, L. (s.
str) daliensis, L. (s. str) xiaoi と命名した
References
GEBIEN,H.,1942. Kata1ogderTenebrioniden. Mitt.,川1,lc1/,1.elf.Ges.,32:746_80g.
KASZAB,Z.,1965. NeueTenebrioniden(Coleoptera)ausChina. A,1,11shist.-nat.Mus.nat1, hu,lg.,
(parszool),57:279-285.
- 1970. FunfneueTenebrionidenausAsien(Coleoplera). Elf.Alb. Mus.Fl・ey,21:112_122.
- 1973. Tenebrioniden(Coleoptera)ausNepal. Actazool.Acad.s(l'.hlmg.,lg:23_74.
- 1976. TenebrionldaederNepal-ExpeditionenyonDr.J. MARTENS(l969_1974). so,token_
belg biol.,57:241-283.
- 1978. VierneueTenebrionidenausNordbengaI(Coleoptera). Foliaelf hu,lg., (ns),31:
187-190.
MASuMOTo,K.,1989. AnewLao'Ia(Coleoptera,Tenebrionidae)fromNorthwestThailand. Elyt1・a,
T1okyo,17:61-64.
- 1990. NewHimalayanspeciesofLao,Ia(Coleoptera,Tenebrionidae)preservedjnthecoffee_
tionoftheNationalScienceMuseum,Tokyo. Bull.,tatn.Sci.Mus.,Tokyo,(A),16:175_1g6.
- & YINWen-ying,1993. TwonewYunnanesebeetlesofthegeneraLao,Ia(Tenebrjonjdae)
andSivacryptt'cus(Archeocrypticidae)(Coleoptera). Elytra, Tokyo,21:23g_243.