Two New Species of the Family Ceratocanthidae from Taiwan

2005·3.9 MB·

by  Ochi, T

E、l,1,・1(.Tok、・0.33(2):491-496.Novemberl9.2005
TwoNewSpeciesoftheFamilyCeratocanthidaefromTaiwan
TeruoOcHI
21-6.Koft1dai5chemo,Toyono-choToyono-gun,Osaka,563-0104Japan,
Jing-FuTsAl
SystematicEntomologyLaboratory.DepartmentofEntomology.NationalChungrisingUniversity
250KuokuangRoad、Taichung,40227Tai、van,RO(-
and
Kimio MAsUMoT0
InstituteofHumanLi、,ingSciences,0tsumaWomen'sUniversity,Tokyo,102-8357Japan
Abstract TwonewspeciesofthefamilyCeratocanthidaearcdescribedunderthe
nan、esofMt1(/''asostest1(1、l'a'1-.,,Iespno、,.andMad1clsostessにl tl、/-11sp no、,.Thisisthefirst
articledealingwiththeoccurrenceof、thcfamilyCeratocanthidae、ll-omTai、、,an.
TheCeratocanthidaeisamoderate-sizedfamilyoftheScarabaeoideacontaining
over250species intheworld(1992, 0c1-ll,p.1).Membersofthisfamilyaremainly
distributedintheforestsofthetropicalandsubtropical zones. IntropicalAsia,seven
generaandmorethan50specieshavebeenrecorded. Thenorthernperiphery ofthe
distributionalareaofthisfamilyinAsiaisKagoshimaatthesouthernpartofKyushu,
SouthwestJapan.However,nospecieshashithertobeenknownfromTaiwan.
Thebeetlesofthis familypossessveryremarkablecharacteristics: thebodyand
legsarecontractile,andalsothebody iscapableofrollingup likeaball. Theyare
often foundunder thebarkofrottenwoodlyingontheforest floor. InJapan,Mad1-a-
.sosteskazunla10cHI,JoHKIetNAKAT^,1990,wasrecorded fromthegalleryofwood-
feedingtermites,Coptoter111esfo1・1nos1tulusSHIRAKlonNakanoshimaIslan(i,theTokara
Islands,SouthwestJapan(IwATAeta1., l990).Thelarvaeofthebeetlesareknown to
feedonthedetritusoftermitesandwood-feedingcockroaches.
Beforegoingintodetails, theauthorswouldliketoexpresstheircordialgratitude
toDr.WataruSUZUKI,HoseiUniversityDainiHighSchool,Dr.MunehiroMARUYAMA,
NationalScienceMuseum(Nat. Hist),Tokyo,Mr.HiroshiSuGAYA, HokkaidoUniver-
sity,forofferingthematerialsforthepresentstudy.Theyalsoexpresstheirgratitudeto
Dr.MakotoKIucHI,TsukubaCity, fortakingclearphotographsinserted in thispaper,
492 Teruo0c1l1,Jing-FuTs、landKimioMAsu、,loTo
andMr.J.-Y.LIu,NationalChungrisingUniversity,forassistingtheresearchconcern-
ingthe faunaofLanyuIsland.TheauthorsareindebtedtoDr.MasahiroKoN,Gradu-
ateSchoolofEnvironmental Science, theUniversity ofShigaPrefecture,Dr.Kunio
ARAYA,GraduateSchool ofSocial andCulturalStudies, KyushuUniversity, andDr.
Man-MiaoYANG,NationalChungHsingUniversity, forgivingtheminvaluableadvice
forthisstudy.
Theho1otypestobedesignatedinthispaper willbedepositedintheNational
MuseumofNaturalHistory,Taichung(=NMNHT),andtheNationalScienceMuseum
(Nat.Hist),Tokyo(=NSMT).
Madrasostestaiwa,tensesp nov
(Fig.1)
Body well convex above. Colourblack, dorsal sidewith amoderate cupreous
tinge;ventralsidesomewhatreddish,stronglyshining;legsblackwithaslightcupre-
oustinge.
Headsubpentagona1,stronglyconvexanteriad,alittletransverse,withinterspaces
betweenpuncturesshining;clypeuswidelyand triangularlyproduced forwards,dis-
tinctlyserratealongoutermargin,withastrongsharptoothatthemiddle;genalangles
wellproducedlateradandtoothed;ocularcanthuswell developedposteriadandex-
tendingtoapicalfive-sixthsofeyelength;clypeo-gena1sutureindistinct;surfacerather
sparselycoveredwith roun coarse,ocellatetohorseshoe-shapedshallowpunctures
ondisc,whichareclearlyarrangedinconcentriccircles;marginalportionofheadwith
longfinesculptures.Eyeobviouslynarrowandelongateindorsalview.Antennaewith
tensegments.
Pronotum simple in shape, about 17 times as wideas long (n=1), shining
smooth;apexbisinuate,conspicuouslyboldlyborderedbyadoublemarginal lines,
outermarginsbecomingbolder laterad;lateralmarginsfinelybordered;anteriorangles
angulatewithroundedcorners,posteriorangleswidelyrounded;baseweaklybisinu-
ate,widelyandroundlyproducedinmiddle,basalmarginboldlybordere theborder
boldestatthemiddle;surfacerathersparselycoveredwithsimilar-sizedpuncturesto
thoseonheadinmiddle,becomingcoarseranddenserlaterad,eachwithashort fine
hair. Scutellum moderate-size ratheracutelyangledatapex, triangularlyconcaveat
themiddle,rugose-punctateandpubescent.
Elytrastronglyconvex,distinctlysubglobular,about l2timesas longaswide,
noticeablycircularinoutlinethoughbearingsixprotuberancesnearapicesclearlyper-
ceptibleindorsal view,with lateral marginsproduced ventradinbasal halves;each
elytronwithfourweakdorsal longitudinalcostae: thefirstcosta(=sutural)almostre-
ducedandnotraisedinanteriortwo-thirds,distinctlyraisedinposterior third;thesec-
ondcosta veryslightlyraised inapical five-sixthsanddistinctlyraised inposterior
sixth,thoughonceinterruptednearapex;thethirdcostaweaklyraised fromanterior
TwoNewSpeciesofTaiwaneseCcratocanlhidac 493
r
・
1 2 3
一、 _一ーー一
Figs.1-3. Mad1'asostesspp fromTaiwan. - 1,HabitusofM tat、、la11e11sesp nov., female,holotype;
2,habitusofMsualkiisp nov.,male,holotype;3,malegenitaliaofMsuztlki1spnov
fifthtoposterior fourth,ratherstronglysoinapical4ththoughthecostaisinterrupted
twoor three times, with thebasal fifthweakly impressed; the fourthcostaweakly
raisedfromanterior third,becomingstrongerposteriadandreachingbeforeapex; first
interval finely striate inposterior thirdalong thefirst costa, witharow of ocellate
punctures;surfaceshallowly,somewhatdenselycoveredwithhorseshoe-shapedcoarse
punctures,whichareopenposteria finelyhaire andlongitudinally, ratherregularly
ranged;lateralpartsofelytronwithlongitudinalsculptures.
Epipleuronwithacarinastronglyelevatedinbasalhalf,thengraduallybecoming
obsoleteposteriad.Protibiaealittleasymmetricalbetweenrightandle量ones: theleft
protjbjawjthoutermarginbearingtwostrongapicalteeth,theremainingpartcoarsely
serratewith fourdistinctdenticles; therightprotibiawith twoapical teeth, thefl「St
verysmallandthesecondlarge,theremainingpartofoutermargincoarselySe「「ate
wjthsjxdenticles.Mesotibiaoblong,3.6timesaslongaswide,withinnerma「9in
weaklysjnuateatthemiddle,outermarginfinelyserrateinobliqueview.Metatibia
subtrjangular,about19timesaslongaswide,ventralsidewiththeinternalhalfbea一「
veorsofjne1ongjtudjna1carinae,theexternalhalftransverselySCulPtu「ed;do「Sal
1ng
sidefeeblyrugu1oseandhairedinexternaltwo-thirds,threecarinaerunnin9ininte「na1
third; jnterna1(ventral)marginsinuateat themiddle,external(do「Sal)ma「9indis-
tinctlyserrate;twoterminalspurssmi pleinshape.MetatarsidistinctlyShe「t,about
7/10aslongasthewidthofapexofmetatibia.
Length:7.2mm;width:2.8mm.
494 TeruoOcl.l1,Jing-FuTs^1andKimioMASuMOTo
Holotype: “Taiwan,TaitungHsieng,Chihpeng,(litter,400m),1-IV-2002,Hi-
,
roshiSUGAYAleg” (NSMT).
ThepresentnewspeciesiscloselyrelatedtoMadlasosteskazunlaiOCHI,
Notes
JoHKletNAKATA,1990, fromJapan,butcanbeeasilydistinguishedfromthelatte「by
thefo11owjngcharacteristics:1)bodywithaslightcupreouslustre(uniformlyblackin
M k=Mkazunla1);2)headstronglyconvexwiththeclypea1marginSt「onglyP「e-
ducedintoasharptoothat themiddle(obtusetoothatthemiddleinM k);3) head
wjthpuncturesshallowerandrathersparseonthedisc(withdeepandverydense
puncturesjnMk);4)pronotumwiththeanterioranglesangulate(veryobtuseandal-
most rounded jn M k);5)pronotumwithanteriormarginconspicuouslyproducedin
theareaofanteriorangle(notconspicuouslyproducedintheareaofanterioranglein
M k);6)scutellumstrong、l concaveinthemiddle,withtheapexobviouslyacutely
angledattheapex(shallowlyconcaveandmoreobtuselyangulateinMk);7)sixpro-
tuberancesobviouslyperceptibleontheelytra1outline(only fourprotuberancesper-
ceptibleinM k).
Madrasostessuzukiisp
nov
(Figs2-3)
Bodyconvex,notsowide,stronglyshining;dorsalsidesparselyclothedwithin-
conspicuousminutewhitehairs,eachhairsimple,notclavateatapex.Colourreddish-
browntoblackish-brown,withslightpurplishtogreenishtingeondorsalside;antenna
reddish-brown; legsalmostreddish-brown.
Headwidelysubpentagona1,weaklyconvex;clypeusbroadlyandtriangularlypro-
duced forwards inmiddle,withoutermarginnotserratebutalmostsmooth,theme-
dianangleobtuse,neitherdistinctlyproduced forwardsnortoothed;genalanglesob-
tuse,roundatcorners;ocularcanthuswelldeve1ope extendingtoapicalfive-sixthsof
eyelength;clypeo-gena1sutureveryfine;surfacerathersparselytomoderatelydensely
scatteredwithrathersmall,strong, roundpuncturesondisc,whicharenotclearly
arranged inconcentriccircles, interspacesbetween themshining; anterior margjna1
Portionofheadcoveredwithratherlongfinesculptures.Eyesratherlargeandovaljn
dorsalaspect.Antennawithtensegments.
P「onOtumt「anSverse,about169to1.78timesaswideaslong(n=3);antero_me_
dianPO「tio11juStbehindanteriormarginslightlybutclearlyraisedandtransverselycar_
inate;ante「Oi「marginbisinuate,ratherboldlyborderedbyadoublemargjna11jnes;lat_
e「alma「9inSSlightlysinuateinfrontandaml ostroundedbehjnd,wjthdjstjnctmarginal
bo「do「;ante「iO「an9lesveryobtuseorrounde posterioranglesentirelyrounded;basal
ma「9inWeaklybSi inuate,roundlyproducedandfinelyridgedjnmjddle;surfacemod_
e「atelyShining,denselycoveredwithsimilar-sizedpuncturestothoseonhead,thoseIn
ante「Oi「andmedialpartsstrongandrounded,andthoseinlateralandposterjorparts
「athe「ocellateandopenposteriad.Scutellumrathersmallandtriangular,shjnjng,scat_
TwoNewSpeciesofTai、vancseCcratocanthidae 495
teredwithseveralirregularlyshapedpunctures.
Elytraconvex,obviouslynarrowerthanpronotum,about1.0timesaswideaslong
(n=3),withlateralmarginspl-educedventradinbasalhalves;eachelytronwith four
weaklongitudinalcostae: thefirst(=sutural)costaalmostreducedandnotraisedinan-
terior two-thirds,distinctlyraisedinposterior third; thesecondcostaalmostreduced
andflatthroughout,thoughthetraceisbarelyperceptibleasanimpunctate1ongitudi-
na1smootharea;thethirdcostaveryweakinanteriortwo-thirdsthoughbarelypercep-
tibleasanimpunctatelongitudina1smoothareaaswellasthesecon andgradually
raised in posterior thir strongly costateinposterior end; the fourth costaweakly
raisedinanterior two-thirds,andobviouslystronger inposterior third;surfaceshal-
lowly,somewhat denselycoveredwitharcuatetohorseshoe-shapedsmall punctures,
whichareopenposteria becomedenserandduplicate,andpartly form irregularly
longitudinalortransversesculpturesinmarginalportions.
Epipleuronwithacarinastronglyelevatedinbasalhalf,thengraduallybecoming
obsoleteposteriad.Protibiaeratherslender,alittleasymmetricalbetweenrightandleft
ones;theleftprotibiaslightlymoreprolongedthantherightinapicalpart,withouter
marginbearingtwoapicalteeth,theremainingpartserratedwithaboutninedenticles,
whicharerathersharpintheanteriorpart,andblunt intheposteriorpart,withinner
marginwidely,weaklygougedinmiddle, lobedantero-ventradatbasalquarter; the
rightportibiaslightlywider thantheleft,withoutermarginbearingtwoapicalteeth,
theremainingpartserratedwithsomesixrathersharpdenticlesinanteriorpart,and
fourtofivebluntdenticlesinposteriorpart,withinnermarginmoreweaklygougedin
middle,moreweaklylobedatbasal four-fifths.Mesotibiaoblong,3.3to3.7timesas
longaswide,withinnermarginweaklysinuate,outermarginfinelyserrateinoblique
aspect.Metatibiaratherelongate,subtriangular,about2.1timesaslongaswide;ven-
tralsidewithinternalhalfbearingfiveorsofinelongitudinalcarinae,external half
transverselysculptured;dorsalsidecoarseandirregularly reticulateinexternal two-
fourths,smoothandshiningininternal fourth; inner(posterior)marginsmooth,outer
(anterior)onefinelyserrate.Metatarsusalmostofthesamelengthasthewidthof
metatibia.
Malegenjlaliaabout15mminlength,basalpiecestronglytwisted; lateral lobes
0.2mminlength,subfalciforminapicalhalf.
Length:3.9-4.3mm;width:2.2-2.4mm.
Holotype: Lanyu Island, Taiwan, 2-X-2004, J.-F. TSAI & J. Y. LIu le9.
,
(NMNHT).paratypes:1e,Samedataasfortheholotype;1e,YeyouViii.,LanyuIS-
Ian(i,Taiwan,29-III-2004,(FIT),W.SUZUKIleg.
Notes.・ ThepresentnewspeciesissomewhatrelatedtoMad1'asostestonkinenSe
pAULIAN, lg45, from“Tonkin”,butcanbeeasilydistinguished fromthelatterbythe
fo11owjngcharacteristics:1)headweaklyconvex(verystronglyconvexinM f =M
tonkjnense);2)surfaceofheadrathersparselycoveredwithroundstrongpunCtu「oSex-
cept fornarrowanteriorportionofclypeus(coveredwithfinetransverseSCuPl tu「oSon
anterjorhalfanddenselycoveredwithirregular,coarse,ocellatepuncturesinM t); 3)
496 TeruoOcl.ll,Jing-FuTsAIandKimioMAsuMoTo
clypealmarginalmostsmooth(distinctlyserrateinM t);4)pronotumwithanterior
anglesobtuseandroundedattheapices(truncateandsharpenedattheexternalcomers
inM t);5)pronotumdenselycoveredwithroundstrongpunctures(denselycovered
withirregularcoarseocellatepuncturesinM t);6)bodyreddish-browntoblackish-
brown, withslight purplish togreenishtingeonthedorsal side(entirely greenish-
bronzeinM f).
KeytotheSpeciesoftheGenusMadrasostesfromTaiwan
1(2)Bodyratherrobust,withpronotumnotwider thanelytra.Elytradistinctlyglobu-
lar,circular inoutline.Headstronglyconvex;clypeuswithasharptoothat the
middle;clypea1margindistinctlyserrate;discdenselyandcoarselypunctate, ir-
regularlyandarcuatelysculpturedinmarginalportions,thepuncturesandsculp-
tures forming aconcentric circle. Pronotumsparsely covered inmiddle, and
ratherdenselysowithcoarsehorseshoe-shapedocellatepunctures 7.2mm.....
M fat11,,anensesp nov
2(1) Bodysomewhatslender,withpronotumobviouslywider thanelytra.Elytranot
distinctlyglobular,subquadrateinoutline.Headweaklyconvex;clypeuswithout
stronglyproduced,sharptoothat themiddle;clypea1marginnotdistinctlyser-
rate;surfaceneitherdenselynorcoarselypunctateondisc,irregularlyandarcu-
atelysculpturedinanteriormarginalportion,thepuncturesandsculpturesnever
forming concentric circle. Pronotum densely covered with small punctures.
3.9-4.3mm M.suzukiisp nov.
要 約
越智輝雄・蔡 経甫・益本仁准i :台湾産マンマルコガネムシ科2新極について. _ 台湾
にマンマルコガネムシ科の甲虫の2新種が分布していることが判明した. そこで, 本論文にて
Mad'asostestalwanensesp nov.とM.suzukiispnov.と命名した. また,両者を同定できる検索表
もつけた. なお,台湾にこの科の昆i、が分布していることの報告としてもこの論文が最初であ
る.
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