Table Of ContentElytra,「okyo,28(1):145-161,May15,2000
AdditionstoPleszophthaml usanditsAlliedGenera(Coleoptera,
Tenebrionidae,Amarygmini) fromEastAsia,Part2
Kimio MAsUMoTo
InstituteofHumanLivingSciences,0tsumaWomen'sUniversity,
Tokyo,102-8357Japan
Abstract ThisisthesecondpartofthestudyofPtesiophthalmusanditsallied
genera.EightnewspeciesofthegenusPlesiophthalmus,anewspeciesofJavamarygmus,
andalsoa newspeciesofEuspinamarygmusaredescribed fromEast Asia. They are
namedasfollows:Plesiophthalmusyukaesp nov.,Rgaoligongensissp nov.,Rkume1sp
nov.,Rcaobangensissp nov.,Rthalperpulchrussp nov.,Revaesp nov.,Rtsugeaesp
nov.,F)violaceisim11issp nov.,Javamarygmuskumeisp nov.,andEuspinamarygmusbre-
merisp nov.
Thispaper isthesecondpartoftheadditionalstudyonthePlesiophthalmusand
itsalliedgenerafromEastAsia.Iamgoingtodescribetennewspeciesofthisgroup.
Besidesmycollection,thematerialsexaminedaresubmittedtomeforthepresent
studyfromMr.StanislavBECvA CzechAcademyofSciences,Dr.HansJ.BREMER,
Melle,Germany,Dr.GiulioCuccoDoRo,Museumd'Histoirenature11e,Geneve,Mrs.
JaneBEARD,theNaturalHistoryMuseum,London,Messrs.KunioKUME,Tokyo,Han-
mei HIRAsAwA,NaganoPref.,MinoruTAO,YokohamaandHideoAKIYAMA, Yoko-
hama,toallofwhomIwishtoexpressmyheartfeltthanks.ThanksarealsoduetoDr.
MakotoKlucHl,InstituteofSericulturalandEntomologicalScience,TsukubaCity, for
takingverybeautifulphotographsinsertedinthispaper.Finally,IappreciateDr.Shun-
IchjUENo,NationalScienceMuseum(Nat.Hist),Tokyo, forconstantguidancetomy
taxonomicstudy.
Theho1otypeswillbedepositedinthemuseumscitedinthetext.Abbreviations
usedforthedepositoryofthetypesarethesameasshowninthepartoneofthisseries
(1999,p 357).
1.GenusPlesiophthalmusMoTscHuLSKY,1857
Plesiophthalmusyukaesp nov.
(Figs.1-2,12-13)
piceous;male: - headandscutellumbluishblack,pronotumdarkbluishviolet,
elytradeepviolet,eachsternumwithbluishorgreenishtinge,abdomenpartlywith
blujshreflection,legsdarkblue,dorsalsurfacevitreouslyshining,ventralsurfacemod-
l46 Kimio MAsUMOT0
eratelytoweaklyshining; fema1e:- headdarkblueandpartlygoldengreen,prono-
tumdeepviolet,scutellumdarkblueandpartlyviolet,elytradeeppurplewithgolden
ectionlatera11yundercertainlight,ventralsurfacedarkgreentoblue,dorsal sur-
re
facestrongly shining,ventralsurfacemoderatelyso. 0vate;stronglyconvexabove,
andratherhunchbacked.
Head transversely elliptic, finely, rather closely punctate, partly micro-sha-
greened;clypeussemicircularand rathernarrow,gentlybentventrad, fronto-clypea1
borderweakly,semicircularlyimpressed;genaeoblique,ratherstronglyraisedlatera
withproducedoutermargins; fronssomewhatboldT-shaped,steeplyinclinedanteria
diatoneabout0.5timesthewidthofthetransversediameterofaneyeinmale,0.75
timesin female.Eyessomewhatcomma-shaped,gentlyconvex laterad,roundly inlaid
intohead.Antennaesubfiliform,reachingbasal t/4ofelytrainmale,basal t/5in fe-
male, ratioof thelengthofeachsegment frombasal toapical (inmale): 0.68, 0.2,
125,0.67,1.1,0.79,0.66,0.64,0.58,0.55,0.77.
.
Pronotum16 timesaswideas long,widestatbase, roundly narrowedapicad;
apexfeeblysinuousoneachside,borderedandrimmed;basegentlyproduce(しneither
borderednormargine sinuousoneachside;sidessteeplydeclinedtolateralmargins,
whichareborderedand rimmed, thoughtherimsare invisible fromabove inmale,
scarcelysoin female; frontanglessubrectangularwithacutecorners,hindanglesal-
mostrectangular,withslightlyproducedcorners;discstronglyconvex,scatteredwith
microscopic punctures. Scutellum wide triangular, irregularly scattered with small
punctures,whichareslightlylargerthanthoseonpronotum.
Elytra132timesaslongaswide,2.78timesthelengthand l42timesthewidth
ofpronotum,widestatapical1/3;dorsumstronglyconvex,highestslightlybeforethe
middle;discmicro-aciculateandunclearlymicro-punctate,withrowsofsmallpunc-
tures,5throwimpressedclosetobase;intervalsalmost at;sidessteeplyinclinedlat_
erad,weaklycompressedatbasal t/3,withlateralmarginsborderedandrimmedL,the
rimsbeingvisible fromabove;basescrenulate;humeriswollen;apicesveryslightly,
roundlyproducedposteriad.
Maleanalstemitegentlyemarginateatapex.Anterioredgeofprofemurspjnedat
apical2/5;maleprotibiaprolongedandcurvedinteria withinteriorsidenoticeably
gouged in basal half; male mesotibia curved interia with interior side weakly
widenedinapical4/7; ratiosofthelengthsofpro-,meso-andmetatarsomeres(in
male):0.6,0.3,0.25,0.24,0.22,1.2;0.8,0.33,0.26,0.22,1.22;1.77,0.58,0.37,1.29.
Malegenitaliasubfusiform,about3.2mminlength,1.2mminwidth,weakly
curvedinlateralview; fusedlaterallobestriangular,1.5mminlength,withprolonged
apicalparts,whicharenoticeablyserratelaterally.
Figs. 1-9. Habitus. - 1-2.Plesiophthalmusyukaespnov;1,heloty;pe,3;2,paratype,
3
gaoligo'1genslssp nov.,holotype, 4.Rkumeisp nov.,holotype, . - 5.Rcao.ban_gensjs
. -
sp nov.,holotype,(3. - 6.Rthaipe,pulch,・fisspnov.,holotype,3. - 7.Revaespnov.,hole_
type, . - 8.Ptsugeaesp nov.,holotype, 9. violaceisimilissp nov.,holotype,
. - .
AdditionstotheAmarygminifromEastAsia,2
147
il
L
-
''・・
9
一
148 Kimio MAsUMOT0
Body length:14-15mm.
Holotype:3,PhupingPalace,ChiangMalProv.,N.ThailandL,20-V-l981,H.DE-
TAN1leg.(NSMT).Paratypes:1ex.,DoiSuthep,ChiangMalProv.,8-V-1997,K.MA-
suMoToleg;1ex.,Mt.DoiPui,1,400-1,500m,ChiangMal, l-V-1982,1ex.,ditto,
6_v_1982,ditto,1ex.,10-V-1982,T.SHIMoMuRAleg;1ex.,DoiPui,24-V-l978,
H.AKIYAMAleg; 5exs.,DoiSuthep,ChiangMalProv.,11-V-1996, 3 exs., ditto,
15_V-1996,2exs.,ditto,18-V-l996,1ex.,ditto,19-V-1996,K.MASUMOToleg;1
ex.,Doi Suthep,18-V-1987, l ex.,ditto,21-V-l987,H.HIRASAWAleg;1ex.,Mt.
Doi Pui, V-1985, A. COTTON leg; 1 ex., Phuping Palace, 20~21-V-1985, H.
AKIYAMA leg; l ex.,PhupingPalace, 20~21-V-1985, M.SAwA11eg;2 exs.,Doi
Suthep,10-V-1986,M.TAOleg;2exs.,ChiangMal, l988,nativecollector; lex.,Doi
Suthep-DoiPui,19~23-IV-l991,J.HoRAKleg.(Coll.BREMER);3exs.,DoiSuthep,
l5-V-l996,K.MAsUMoToleg;2exs.,DoiSuthep,16-V-1996,K.MAsUMOTo leg;1
ex.,DoiSuthep,16-V-l997,K.MAsuMoTo leg;1ex.,DoiSuthep,22-V-l997,K.
MAsUMoTo leg; 1ex., Doi Suthep, l8-V-1996,K. MAsUMoTo leg; 1ex., Wiang
Papao,ChiangRaiProv.,nativecollector;2exs.,DoiPui,6-VI-l984,nativecollector;
1ex.,DoiSang,ChiangMalProv.,26-V-l990,K.KuMEleg;1ex.,WiangPapao,
Chiang Rai Prov., 2-VI-1993, native collector; 1 ex., Doi Suthep, VI-l986, N.
Ko1YAMAleg; l ex.,N.ThailancLnootherdetaileddata.
Nlotes. Ihavecommonlyobservedthevioletandpurplishspecimensatthesame
placeoftheforestsinNorthThailand.Atfirst,Ibelievedthat thereoccurredtwodif-
ferentspecies.Recently,Mr.StanislavBECvARsuggestedtomethatthetwotypesof
specimensquitedifferentincolorationshouldbelongtothesamespecies.Ihavecon-
firmedthisontheoccasionofthisstudy.
ThemaleofthisnewspeciesresemblesPlesiophthalmusviolaceus(Pfc, l926),a
memberofthespecies-groupofPex:cottons,originallydescribed fromCambodia,but
thetypespecimenissmallerandlessconvex,andbesides,violetinthefemale.
PIcdescribedmany“species”ofPlesiophthalmusbased on females from In-
dochina.JudgingfromsuchsexualdimorphismincolorationasisfoundinRyukae,a
careful re-examinationofthetypesandmaterialsbelonging tothespecies-groups f)
tonkinensisandPex:cottonsfromthisareashouldbeneededinfutureforclarifyingthe
truesystematicstatusofthespeciesinvolved.
Plesiophthalmusgaoligongetlsisspnov.
(Figs3,14-15)
Dark green, anal sternite, tarsi, etc., darkbrown, head, pronotum,scutellum,
femoraandtibiaemetallicdeepgreen,elytradeeppurple,postero-1ateralportionsof
elytrawithgoldengreenishreflection;head,pronotum,scutellumandlegsexcept for
tarsistronglymetallicallyshining;elytradully,somewhatalutaceouslyshining,ventral
surfaceratherweaklyshining.0vate;stronglyconvexabove.
Head transversely elliptical,closely, finelypunctate;clypeussemicircular,bent
AdditionstotheAmarygminifromEastAsia,2 149
ventrad in apical half, fronto-clypea1border arcuateand finely impressed; genae
obliquelysubrhombica1,stronglyraisedlaterad,withoutermarginsobtuselyangulate;
fronssteeply inclined forwards,shallowly impressedbetweeneyes,diatoneabout0.56
timesaswideasthetransversediameter ofaneye.Eyessomewhatcomma-shaped,
roundly inlaidintohead,moderatelyconvex laterad.Antennaesubfiliform,reaching
basal t/3ofelytra,ratioofthelengthofeachsegment frombasaltoapical:0.66,0.5,
1.28,0.65,1.12,0.67,0.62,0.59,0.62,0.48,0.63.
Pronotum15timesaswideaslong,widestatbase,graduallynarrowedapicad;
apexnearlystraight thoughslightlysinuousoneachside,ratherboldlyborderedand
finely rimmed;basegentlyproduce sinuousoneachside, not bordere emarginate
opposite to scutellum; sides rather steeply declined to lateral margins, which are
clearlyborderedandfinelyrimmed,therimsvisible fromabove; frontanglessubrec-
tangularwithpointedcorners,hindanglesalmost rectangular; discstrongly,slightly
transverselyconvex,veryshallowlyimpressedinmiddle,whollypolishedbutscattered
withmicroscopicpunctures.Scutellumtriangular,slightlyelevate very feeblymicro-
shagreene irregularlyscatteredwithmicroscopicpunctures,whichare larger than
thoseonpronotum,transverselyimpressednearapex.
Elytra1.54timesaslongaswide,3.1timesthelengthand1.36timesthewidthof
pronotum, widest at apical2/5; dorsumstrongly convex,highest at basal t/3; disc
micro-shagreened and micro-aciculate,scattered with microscopic punctures, with
rowsofverysmallpunctures,whicharesparselysetandindistinct,5throwimpressed
closetobase;sidesrathersteeplydeclinedtolateralmargins,whichareboldlybor-
deredandfinelyrimmed;basescrenulate;humeriswollen;apicesveryslightly,roundly
produced.
Maleanalsterniteweaklyemarginate.Profemurspinedatapical2/5onanterior
edge;maleprotibia curved interia with interior facegouged in basal half; male
mesotibia curved interia withinterior faceslightlythickenedinapical3/5;ratiosof
thelengthsofpro-,meso-andmetatarsomeres:0.66,0.27,0.26,0.23,1.2;0.83,0.38,
0.35,0.28,1.2;178,0.58,0.36,129.
. .
Malegenitaliasubfusiform,4.2mminlength,1.2mminwidth,withbasalpiece
weaklycurvedinlateralview; fusedlateral lobesabout13mminlength,withpro-
longedapicalparts,whicharefinelyserratelaterally.
Body length:12.5-13mm.
Holotype: (5、,100kmWofBaoshan,Gaoligongshan“NatureReserveofChina,''
Yunnan Prov., China, 14~21-V-1993, E. JENDEK & 0. SAUSA leg. (NMNHP).
Paratype:1ex.,samedataasfortheholotype.
Notes. Thisnewspeciessomewhatresemblesthe femaleoftheprecedingnew
species,Ryukaesp nov.,incolorationofboththesexes,butcanbedifferentiatedfrom
thelatterbythefrontanglesofthepronotumwithpointedcorners,thescutellumtrans-
verselyimpressedneartheapex,theelytranoticeablymicro-shagreenedandmicro-aci-
culate,thesuturalmarginsmorestronglyraised,andthedifferentlyshapedmalegeni-
talia.
150 KimioMAsUMOT0
10 11
Figs. 10-11. Habitus. - 10.Java,nar、,g,mlsk:umetsp nov.,holotype, . - ll.Etlspina'naryg'nus
,-e,no,・1spnov.,holotype,
.
Plesiophthalmuskuttteispnov.
(Figs4,16-17)
Dark blue and partly green, headgreenishblue, elytradark bluewith feebly
greenishtinge,scutellumdarkblue,elytrapurpleinmajorpartsofthemiddle,outer
marginsof thepurplishpartssurroundedby goldengreenandgreenishbluebands,
humeralparts,sidesnearlateralmarginsandpostero-latera1marginsdeepvioletblue;
dorsalsurfacestrongly, metallically shining, ventral surfacegently,somewhat aluta-
ceouslyshining.0vate;stronglyconvexabove.
Headovateand transverse,weaklymicro-shagreenecl, frequentlyscatteredwith
microscopicpunctures;clypeusrather transverse,depressedinbasal2/3,bentventrad
inapical 1/3, fronto-clypea1borderslightly arcuateand strongly impressed; genae
oblique,raisedlaterad,withroundedoutermargins; fronsratherwide,steeplyinclined
anteriad,withafaintlongitudinal impressioninmiddle,diatonel2timesthewidthof
thetransversediameterofaneye.Eyessubreniform,somewhatobliquely inlaidinto
hea convexlaterad.Antennaesubfiliform, feeblythickenedapicad,ratioofthelength
ofeachsegment frombasaltoapical:0.59,0.2,1.12,0.5,0.74,0.69,0.67,0.57,0.46,
0.55, 069.
.
Pronotum1.87timesaswideaslong,widestatbase,graduallynarrowedapicad;
apex veryslightly emarginateandbisinuous,bordere theborder deepened laterad;
base weakly produced andbisinuous, finely margine almost straight opposite to
scutellum;sidessteeply inclinedlatera withlateralmarginsgroovedandvisible from
above; front anglesrectangular with rounded comers, hindangles rectangular with
slightly producedcorners; disc ratherstrongly,somewhat transversely convex, pol-
ishe scatteredwith very minute punctures. Scutellum triangular, slightly elevated,
AdditionstotheAmarygminifromEastAsia,2 151
veryweaklymicro-shagreene sparselyscatteredwithmicroscopicpunctures,which
arelargerthanthoseofthepronotum.
Elytra1.27timesaslongaswide,3.48timesthelengthand1.5timesthewidthof
pronotum, widest at apical2/5;dorsumstrongly convex, highest at basal t/3; disc
weaklymicro-aciculate,verysparselyscatteredwithmicroscopicpunctures,withrows
ofsmallpunctures,whichareoften finelystriated inthelateralparts,5throw im-
pressedclosetobase; intervalsalmostflat;sidessteeplyinclinedlateradandenvelop-
inghindbody,withlateralmarginsgroove andcompressedslightlybeforethemid-
dle;basesslightlycrenulate;humerifeeblyswollen;apicesslightlyproduced.
Maleanalsternitefinely impressedalongoutermargin,withoutsexualmodifica-
tion.Profemurspinedatapical1/3onanterioredge;maleprotibiagougedoninterior
faceinbasalhalf;malemesotibiathickenedinapical2/5ofinterior face;ratiosofthe
lengthsofpro-,meso-andmetatarsomeres:0.5,0.24,0.22,0.21,1.2; 0.63,0.36, 0.29,
0.23,1.23;127,0.38,0.26,136.
. .
Malegenitaliafusiform,2.6mminlength,0.6mminwidth,noticeablycurvedin
middle in lateral view; fused lateral lobesequilateral triangular, 0.75mm in length,
withapicesstronglyserratelaterally.
Bodylength:10.3-12.5mm.
Holotype: , Tam Dao, N. Vietnam, 20-V-1995, K. KuME leg. (NSMT).
Paratype:1ex.,samedataasfortheholotype.
Notes. Thisnewspeciesresembles1)semlpurpureus(PIc,1917),amemberof
thespecies-groupof e)cce11ens,originallydescribedfromBengal.However,thiscan
bedifferentiated from1)semlpurpu、reusbythepronota1puncturesmuchweaker,the
elytrawithnoticeabledeepvioletbluepatchesinthepostero-1atera1parts,andthemale
genitaliawiththeapicesdistinctlyserrateinthelateralparts.
Plesiophthalmuscaobangettsissp nov.
(Figs5,18-l9)
Darkblue,partlygoldengreenorpurple,headdarkgoldengreenwithpurplish
centralpart,pronotumpurpleinlateralparts,deepblueinmiddleandpostero-1atera1
parts,antero-interna1partsandscutellumdeeppurple,elytrapurpleinhumeraland
postero-1atera1parts,whose internal portionsareyellowish green, though the col-
orationand reflection aredistinctly changeableunder certain light; dorsal surface
stronglymetallicallyshining,ventralsurfaceweakly,alutaceouslyso.0vate;St「on9ly
convexabove.
Headtransverselyelliptical,weaklymicro-shagreened,ratherirregularlyscattered
wjthsmallandmicroscopicpunctures;clypeussemicircular,depressedinbasalhalf,
bentventradjnapicalhalf,fronto-clypea1borderarcuateandfinelyimpressed;9enae
obljquelyrhombica1,raisedlaterad,withobtuseoutermargins;fronsrathersteeplyin-
cljned forwardsinapical half weakly attenedinposteriorbaffintheareabetween
eyes,longitudinallyimpressedatthemiddleofposteriorpart,diatoneabout l25times
152 Kimio MAsUMoT0
thewidthof thetransversediameterofaneye.Eyessomewhatcomma-shapecしsub-
hexagonallyinlaidintoheacしconvexlaterad.Antennaesubfiliform,thoughtheapical
fjvesegmentsareclavate,reachingbasal t/4ofelytra,ratioofthelengthofeachseg-
ment frombasaltoapical:0.58,0.2,1.35,0.64,0.79,0.71,0.69,0.54,0.44,0.49,0.63.
Pronotum153timesaswideaslong,widestatbase,graduallynarrowedapicad;
apexnearlystraightindorsalview,clearlybordered;basegentlyproduced,sinuouson
eachside, neithermarginednor impresse emarginateoppositetoscutellum;sides
gradually inclinedlaterad,withlateralmarginsgroove gentlyreflexed,andeasilyvis-
iblefromabove; frontanglessubrectangularwithroundedcomers,hindanglessubrec-
tangular withhookedcorners; disc ratherstrongly convex,very weakly micro-sha-
greened,scatteredwithsmall andmicroscopic punctures, whichbecome largerand
closer laterad. Scutellum subcordate, feebly convex, partly very weakly micro-sha-
sparselyscatteredwithsmallpunctures,transverselyimpressednearapex.
greene
Elytra129timesaslongaswide,2.76timesthelengthand152timesthewidth
ofpronotum,widestatapical4/9;dorsumstronglyconvex,highestatbasal t/3,rather
transversely impressedatbasal t/4oneachside;discveryweaklymicro-shagreened
andmicro-aciculate,scatteredwithmicroscopicpunctures,withrowsofsmallpunc-
tures,whichareoftenoblong;intervalswide,almostflat;sidessteeplyinclinedlaterad,
compressedatbasal t/3,withlateralmarginspunctate-groove feebly expanded lat-
andvisiblefromabove;basescrenulate;humericonvextransversely;apicesvery
era
slightlyproducedposteriad.
Maleanal sterniteimpressedalong outer margin, truncate at apex. Profemur
spinedatapical1/3onanterioredge;maleprotibiaratherstronglycurvecしgougedin
basal4/7on interior face;malemesotibiagradually thickenedapicad;ratiosof the
lengthsofpro-,meso-andmetatarsomeres:0.48,0.27,0.25,0.22,1.2;0.68,0.62,0.29,
0.27,1.2;1.52,0.39,1.22.
Malegenitalianotmodified,slightlyelongatedfusiform,4.25mminlength,0.72
mminwidth,weaklycurvedinmiddleinlateralview;fusedlaterallobesnearlyeton_
gatedequilateraltriangular,1.5mminlength,withsimpleapicalparts.
Bodylength:12mm.
Holotype: ,CaoBang,N.Vietnam,26~28-V-1995,M.ITOleg.(NSMT).
Notes. Thisnewspeciesisamemberofthespecies-groupofRperpulchrusand
resemblesRpiciMASuMoTo,1990,fromN.Vietnam,butcanbedistinguishedfrom
thelatterbythesmallerbody,withslendererlegs,thedifferentelytra1colour_patches,
andthedifferentlyshapedmalegenitalia.
MASuMOTo(1990,p719)mentionedthespecies-groupof1)perpulchrus,whjch
Consistsofthreespecies,F)perpulchrus(Pfc,1930) fromYunnan, plot' MAsUMoTo,
1990, f「omN.Vietnam,and1)nlshikawai(MAsUMoTo,1981) fromTaiwan.TheTaj_
waneseonePossessesaeumolpoidbody withdorsal surfacesimply darkbronzy jn
colourandlackingiridescentpatches.Thisspeciesthereforeshouldbeexcluded from
theSpecies-groupandformsanewgrouptogetherwithRsparsepunctatus(pfc, lg25),
fromNorth Vietnam.
AdditionstotheAmarygminifromEastAsia,2 153
Plesiophthalmusthaiperpulchrussp nov.
(Figs6,20-21)
Darkblueandpartlypurple, headgoldengreenwithpurplishpatchmedially,
pronotumwithpurplishpatchesatantero-media1,antero-Iatera1andbasalparts,each
surroundedbyrathergoldenandbluishareas,scutellumgoldencoppery,elytrawith
purplishpatchesinmedic-basal,humeralandpostero-1atera1parts,eachsurroundedby
goldenandbluishareas,thepostero-1atera1patcheswithgreenishbluepartsinmiddle;
dorsalsurfacestronglymetallicallyshining,ventralsurfacemoderatelyshining,partly
alutaceous.0vate;stronglyconvexabove,hunchbackedandrathereumolpoid.
Headovateandsomewhat transverse, rathercloselypunctate,sparselyscattered
withmicroscopicpuncturesamonglargerones;clypeusrectangular,depressedinbasal
part,weakly bentventradinapicalhalf, fronto-clypealborder groovedandarcuate;
genaeobliquelyrhombica1,gentlyraisedoutwards,withobtuselyangulateoutermar-
gins; fronsgraduallyinclinedapicad, faintlyimpressedinmiddleofposteriorpart,dia-
tone1.1timesthewidthofthetransversediameter ofaneye. Eyesrathercomma-
shaped,roundlyinlaidintohea convex laterad.Antennaesubclavate,apicalfiveseg-
mentswidene ratioofthelengthofeachsegment frombasaltoapical:0.6,0.2,1.17,
0.56,0.61 0.63,0.64,0.49,0.41,0.39,0.56.
,
Pronotum 143 timesaswideaslong, widest at base, roundly narrowedapicad;
apexveryslightlyproduced,bordereli,theborderbecomingbolder laterad;basepro-
ducedposteriad,slightlysinuousoneachside,emarginateoppositetoscutellum;sides
steeplyinclinedlatera withlateralmarginspunctate-groovedandvisiblefromabove;
front angles rectangular,hindanglesslightly obtuse; discstrongly convex, weakly
micro-shagreened, irregularly scatteredwithsmall, roundpunctures, shallowly im-
pressedinantero-media1part.Scutellumsemicircular, feeblyelevatedthoughalmost
flat,sparselyscatteredwithsmallpunctures.
Elytra123timesaslongaswide,2.57timesthelengthand136timesthewidth
ofpronotum,widestatapical4/9;dorsumstronglyconvex,highestatbasal t/3,rather
transversely impressedatbasal t/4and faintlysoclosetobaseoneach side; disc
weaklymicro-shagreenedandmicro-aciculate,scatteredwithmicroscopicpunctures,
withrowsofsmallpunctures; intervalsnotconvexbutpartlyslightlywrinkled;sides
steeplyinclinedlatera compressedatbasal t/3,withlateralmarginsfinelyexpanded
laterad,andvisiblefromaboveinposterior2/3;basescrenulate;humeriswollenpos-
tero-interiad;apicessimplyrounded.
Maleanalsternitefinelyimpressedalongposteriormargin,truncateatapex.Pro-
femurspjnedatapical1/3onanterioredge;maleprotibianoticeablygougedinbasal
3/5ofinterior face;malemesotibiaslightlygougedinbasal2/5ofinterior face;ratios
ofthelengthsofpro-,meso-andmetatarsomeres:0.3,0.28,0.26,0.22,1.2;0.69,0.36,
0.33,0.31,1.24;1.5,0.32,0.3,1.28.
Malegenitaliaweaklyelongatedfusiform,3.7mminlength,0.65mminwidth,
gentlycurvedin lateralview; fusedlaterallobeselongatedequilateral triangular,1.3
154 KimioMAsUMoT0
mminlength,withsimplyacuteapices.
Bodylength:11mm.
Holotype: Doi Pui, 1,400-1,500m alt., Chiang Mal Prov., N. Thailan
,
18-VI-1983,T.SHIMoMURAleg.(NSMT).Paratypes:1ex.,PhupingPalace- DoiPui,
N.Thailand,2-V-1985,M. TAOleg;1ex.,nearChiangMal,Thailand,30-IV-1985,
M.TAOleg;2exs.,ChiangMal,Thailand,1988,nativecollector;1ex.,nearFang,
1,930malt.,N.Thailan 10~16-VI-1989,N.KoYAMAleg.
Notes. Thisnewspeciesisamemberofthespecies-groupofRperpulchrusand
resemblesPpiciMAsuMoTo,1990, fromN.Vietnam,butcanbedistinguished from
thelatterbythemorestronglypunctatepronotum,themorecoarselymicrosculptured
elytrawithdifferentcolourpatterns,andthedifferentlysizedmalegenitalia(4.3mmin
lengthinRpi,ci).
It isworthnotingthat thetwospeciesbelonging tothesamespecies-group,1;)
perpulchrusPfc andthisnewspecies,aredistributedinthesamearea,DoiSuthep-
DoiPui,ChiangMalProv.,NorthThailand.
Plesiophthalmusel,aesp nov
(Figs 7,22-23)
Piceous with dark bluish re ection,headdarkgreenishblue, pronotumgolden
castaneousinmajorpartofthemiddle,greenishorbluishinbasalparts,andsomewhat
deepvioletinlateralportions,scutellumpartlybluish,greenishorviolet,elytragolden
castaneousinmajorparts,somewhatbrassyinsuturalportions,deeppurpleinpostero-
lateralportions,basalpartsof femoraandtibiaedarkblue,apicalpartsof thesame
darkviolet;dorsalsurfacestronglyandmetallicallyshining,ventralsurfaceratheralu-
taceous.0vate;stronglyconvexabove,ratherhunchbacked.
Head transverselyelliptical, rather closely, finelypunctate; clypeus transverse,
strongly bent ventrad in middle, fronto-clypea1bordernearly straightly impressed;
genaeobliquelysubrhombica1,strongly raised latera with roundedoutermargins;
fronssteeplyinclinedapicad, faintlyimpressedbetweeneyes,diatoneabout0.45times
the width of the transverse diameter of an eye. Eyes somewhat comma-shaped,
obliquely inlaid intohead, convex laterad. Antennaesubfiliform, feebly thickened
apica reachingbasal t/3ofelytra,ratioofthelengthofeachsegment frombasalto
apical:0.6,0.2,1.03,0.39,0.72,0.65,0.63,0.44,0.43,0.41,0.66.
Pronotum167timesaswideaslong,widestatbase,graduallynarrowedapicad;
apexalmoststraightindorsalview,borderedandrimmed;basegentlyproduced,bisin_
uousoneachside,emarginateoppositetoscutellum,withoutmarginor impression;
sidesmoderatelydeclinedtolateralmargins,whicharebordered,finelyre?exed,and
easilyvisiblefromabove; frontanglessubrectanguIarwithroundedcorners,hjndan_
glessubrectangularandratherslightlyhooked;discgently,rathertransverselyconvex,
veryweaklymicro-shagreene scatteredwithverysmallandmicroscopicpuncturesjn
middle,closelyandstronglypunctateinlateralparts.Scutellumtriangularwithslightly
