Three New Species of the Genus Callistethus (Coleoptera, Scarabaeidae, Rutelinae) from Palawan and Borneo

9 Pages·1998·7.9 MB·English

by  Wada, K

Eh(cid:3)t,a(cid:1)(cid:2)ok(cid:1),o(cid:1)26(1):145-153(cid:1)May15,1998
ThreeNewSpeciesoftheGenusCaliistethus(Coleoptera,
Scarabaeidae,Rutelinae) fromPalawanandBorneo
KaO(cid:2)u WADA
3-13-19,Kokubunjidai,Ebina-shi,Kanagawa246-1100Japan
Abstract ThreenewspeciesofthegenusCa11istethusfromPalawanIslandofthe
PhilippinesandBorneoaredescribed.TheyarcnamedCpala(cid:1)(cid:1)(cid:3)ale,Isis,Cnaka,telandC
decf1a,1,01-el.
Seventeenyearsago, I obtainedaremarkablespeciesofthegenusCaliistethus
fromPalawanIslandofthePhilippines,andrecently,IreceivedtwoBemoanspeciesof
thesamegenus. 0ntheotherhand, Ihadopportunitiesofvisitingseveralnaturalhis-
torymuseumsinEurope from l993 to t995, whereI wasable toreexaminethe type
specimensofthegenusCa11istet/11ls.
TheAsianmembersofthisgenushavebeenclassifiedinto11species-groupsby
MAcHATscHKE(1972).Afteradetailedstudy, Ihaveconcludedthat thespeciesmen-
tionedaboveare new toscience, and that they belong to the Ca11istethusexce11ens
group. Thisspecies-group is characterized by theelongatedmesosternal process,
which isstrongly compressedinventral view,andbentdownward,broadly triangular
or broadly hem-shaped in lateral view. Though MAcHATscHKEincluded C ltlbrictls
OHAUs,1915andC ''ledeliLANsBERGE,1880intheexce11ensgroup, Iprefer toex-
cludethem fromthegroup forthereasonofdifferentlyshapedmesosterna1process.
In thisarticle,I amgoingtodescribethreenewspeciesofthegenusCa11istetht.ls
under thenames C a/awanensls, Cdec/lam ,(cid:3)eland C ,1ai,ane1.
Beforegoing further,IwishtoexpressmysinceregratitudetoDr. ManfredUHLIG
andMr.JoachimScHuLzEoftheMuseum fiirNaturkundeder HumboldtUniversitatzu
Berlin, Dr. Roger-Paul DEcHAMBREof the Museum National d'Histoire Nature1le,
Paris, Dr.J. KRIKKENoftheNationaa1NatuurhistorischMuseum, Leiden, Dr. Martin
BAEHR of the Zoologische Staatssammlung, Miinchen, Dr. Lother ZERcHEof the
DeutschesEntomo1ogisches Institut,Eberswalde,and Dr. 0tt6MERKLoftheMagyar
Termeszettudomanyi Muzeum,Budapest, for theloanofmaterials under theircare.
DeepindebtednessshouldbeexpressedtoMr.MalcolmD.KERLEYoftheNaturalHis-
tory Museum, London,andalsotoDr.C. 0'TOOLoftheHopeEntomologicalCollec-
tionsoftheUniversityMuseum,Oxford, forgivingmetheopportunitiesofexamining
the collectionsof thegenus Ca11istethus. I express my deepest appreciation to Dr.
KimioMAsUMoToofOtsumaWomen'sUniversity,Tokyo, forhisconstantguidanceof
l46 KaOru WADA
myentomologicalstudy.Finally,myheartythanksareduetoMr. Takeshi ITOforhis
kindhelpinmaterials.Theho1otypesofthenewspecieswillbepreservedinthecol-
lectionoftheKanagawaPrefecturalMuseumofNaturalHistory,0dawara,Japan.
KeytotheSpeciesoftheCa11istethusexce11e,IsGroup
1 4 Middleandhindtibiaecloselyanddistinctlypunctate
2 3 Mesosterna1process horizontally projected (Fig. 4); head, pronotum and
scutellumdarkpurplishred,elytradeepgreen;PalawanIs
Cpalawatlensisspnov
3 (2) Mesostema1processprojectedslightlydownwards (Fig. 9); head,pronotum
andscutellumdeep orange, elytradarkgrayish blue; Borneo,Sumatra,
NiasIs.,MalayPeninsula,Indochina... C excetlensNoNFRIED.
. . . . . . . .
4 (1) Middleandhindtibiaesparselypunctateorimpunctate.
5 (8) Upperbranchofinnerclawof forelegalmoststraight;dorsalsurfacealmost
ofthesamecoloration,chestnutbrowntodarkbrown.
6 (7) Inner clawof forelegslender,upperbranchofinnerclawof forelegofthe
samewidthasthelowerone;mesosterna1processroundlyprojected,with
bluntapex(Fig.7);Java C d''esc11eriOHAUs
7 (8) Innerclawofforelegnotslender,theupperbranchofinnerclawofforeleg
slendererthan thelowerone;mesostema1processprojectedandangulate,
withacuteapex(Fig 8);MalayPeninsula_. __ _.CnlalayusOHAUs.
8 (5) Upperbranchof innerclawof forelegcurveddownwards;dorsalsurface
variousin coloration.
9 (10) Mesostema1 process horizontally projected and angulate, with sharply
pointed apex (Fig 5); head, pronotumand scutellum dark red to dark
greenishred;elytradarkpurplishred, tarsiandtergumdarkred todark
greenishred;Borneo C ,lata,le sp nov.
10 (9) Mesostema1processprojectedupwards
11 (12) Mesostemal process with feebly rounded apex (Fig. 6); head, pronotum,
scutellum andelytradark reddishbrown,withstronggreenishmetallic
lustre,pronotumwithreddishyellowbandinmarginalportions;Borneo
Cdec11a,nbre1sp nov.
12 (11) Mesostema1processwithmoderately pointedapex(Fig.10);hea(i,prono-
tumandscutellumdeepgreenishyellow;elytradarkgrayishbrown;tarsi
deepgreentoblue,tergumdeepgrayishbrown;Borneo
C lllOM/f0(cid:1)0HAUS
CaliistethuspalaH'a'to'Isisspnov.
(Figs.1,4)
Bodylength:17.9-19.4mm,width:9.3-10.9mm.
ThreeNew Ca1/1steliltlsfromPalawanand Borneo 147
2 3
Figs. l-3. HabitusofCa111stet11tlsspp. - 1.Cpa/a(cid:1)(cid:1)'ane'Isissp nov.,holotype(cid:1)3. - 2. C 'taka'lei
sp nov.,holotype. 3.C decha,nb,(cid:2)e1spnov.,holotype,(S.
. -
Head,pronotumandscutellumreddishbrown; fronswithavaguedarkreddish
brownpatchatthemiddle,pronotumwithapairoflargevague,darkreddishbrown
patchesmedially,whicharesometimeswidened;elytradeepgreen;propygidium,py-
gidium,andabdominal stemitesdark reddishbrown;metasternumandlegsreddish
brown to dark reddish brown; dorsal surfacewithmetallic lustre, ventral surfacewith
vitreous lustre.
Head feebly microsculptured, with sparse, erect reddish brown setae (0.42-
0.48mm in length)alongeyes; clypeusbroadly rounded, 2.0-2.05 timesaswideas
long,re exedalongmargin,closelypunctate, thepuncturesinmiddledense, thosein
lateralportionspartlycoalescentandreticulatelyrugu1ose, fronsirregularlypunctate,
thepuncturesbecomingdenserandlargeranteriad,smallertowardsvertex;vertexscat-
teredwithshortelongatepunctures,whichbecomelongerlaterad.
Pronotum 175-1.77timesaswideaslong,narrowedapicadinapical1/3,sublin-
early andslightly widenedbasadinbasal2/3; frontanglesprojectedandacute,hind
anglesobtuse; disc scatteredwithsmall punctures, which become largerantero-1at-
erad; lateral margins of pronotum with sparse, erect yellowish brownsetae (0.5-
0.625mm in length); rims of lateral margins extending tohindangles. Scutellum
sparselypunctateinanteriorportion.
Elytramicrosculptured,obviouslyvisibleunder40X,with11rowsofpunctures;
interval between first andsecond rows irregularly scattered with round punctures,
whichareintermixedwithminutepunctures(visibleunder60X);sidesslightlyarcuate
laterad,slightlysinuousinanterior1/3,widenedinmiddle, thennarrowedposteriad;
distalmarginsrounded;rimsoflateralmarginsthickenedinbasal t/3,becomingthin-
nerinapical2/3,anddisappearingathindcorners;marginalmembranethin,startingat
148 KaO(cid:3)uWADA
basal1/4andextendingtoelytralapices.
Pygidium triangular with rounded apex, weakly microsculptured, irregularly
punctate,thepuncturescrescent-shaped,becoming largerandmoretransverselaterad,
partlycoalescentandreticulately rugu1oseinantero-1atera1portions; lateralportions
4 (cid:1) 5
6
8 9 10
Figs. 4-10. Mcsostema1processinlateralview(scale:1mm). - 4,Ca11istethuspala(cid:2)(cid:2)ane,Isissp nov;
5,Cnakane1sp nov;6,Cdec;1ambre1sp nov;7, C d,-esche(cid:4),iOHAUs,1915;8, C ,nalavusOHAUs,
l932;9, Cexce11ensNoNFRIED.l894;10,C'noultoniOHAUs(cid:2)l910.
ThreeNewCalli(cid:1)tethtlsfromPalawanandBorneo 149
andapical marginwithseveral erect yellowishbrownsetae; rims ofoutermargins
nearlystraight.
Mesosterna1processmoderatelyprojected,compressed fromsides,extendingbe-
fore the level of procoxae, withbroadly roundedapex (Fig 4);metasternumwith a
mediangroove,punctatesparselyandminutelyinmiddle,becominglargeranddenser
laterad,partly coalescent inlateralportions,eachpuncturewithanerect yellowish
brownseta(0.55-0.75mminlength).
Abdominal sternites with a transverse row ofappressed reddish brown setae
(0.175-0.25mmin length)atbasal t/4,distinctlypunctate, thepuncturesinmiddle
smallandcrescent-shaped,becominglargeranddenserlaterad.
Protibiabidentate;apico-externa1denticleacuteinmale, rectangularand feebly
roundedat innercornerin female; innerclawof forelegandouterclawofmiddleleg
incisedapically, formingtwobranches,theupperbranchof forelegabout3/5times
thewidthoftheloweroneat thebase,thelowerbranchslightly longer thantheupper
one;outerclawof foreleg,innerclawsofmiddleandhindlegssimpleandacuminate.
Holotype: d Bindoyan, Palawan Is.,Philippines, 19-IV-1979, leg.F. DAcAsIN.
Allotype: ,samedataasfortheholotype.Paratypes: ,samedataas fortheholotype;
2 dsamelocalityasfortheholotype,2-IX-1984,nativecollector.
Callistetllusnaka'telsp nov
(Figs 2(cid:1)5)
Bodylength:16.6-19.3mm,width:9.5-10.6mm.
Head,pronotum,scutellum,propygidium,pygidium,legsandventralsurfacedark
redtodarkgreenishred;elytradarkpurplishred;dorsalsurfacewithvitreouslustre,
ventralsurfaceratherweaklywithvitreouslustre.
Headmicrosculptured, withsparse,erect reddishbrownsetae(0.37-0.4mm in
length)alongeyes;clypeusbroadlyrounded,2.11-2.29timesaswideaslong,reflexed
alongmargin,denselypunctate, thepunctures largeandelliptical,partlycoalescent;
fronssparselypunctateinmiddle,thepuncturesround,becomingsmallerlaterad, ner
andsparsertowardsvertex.
Pronotum1.62-1.88timesaswideaslong,narrowedapicadinapical2/5,slightly
widenedbasadinbasal3/5; frontanglesprojectedandacute,hindanglesalmostrec-
tangularandweaklyroundedatapices;discscatteredwithsmallpunctures,whichbe-
comelarger anddenser laterad;marginalportionswithsparse,erect reddishbrown
setae(0.55-0.625mminlength); lateralmarginswithrims, therimsextendingbase-
laterad.Scutellumsparselypunctate.
Elytramicrosculptured,clearly visibleunder40X,with11rowsofsmall punc-
tures; intervals irregularlyscatteredwithminutepunctures,whicharevisibleunder
60x;sidesslightlyarcuatelaterad,slightlysinuousinanterior2/5,weaklywidenedin
middle, thennarrowedposteriad; distal margins rounded; lateral margins with rims
thickenedinbasal2/5,becomingthinner inapical3/5,anddisappearingathindcor-
l50 Kaoru WADA
11 12
Figs. ll -12. Innerclawof fore leg(scale: 1mm). - ll(cid:1)Ca11istethtlsd,-esehe,(cid:2)iOHAus, l915, holo-
type(cid:1) ;12.C t'lata(cid:1)'tls0llAUs(cid:1)l932,holotype, (S
ners;marginalmembranethin,startingatbasal l/4andextendingtoelytralapices.
Propygidiumweaklymicrosculptured,sparselypunctateinmiddle, thepunctures
crescent-shaped,becominglargerlaterad.
Pygidiumweaklymicrosculptured,shallowly grooved inanterior portion,with
twopairsofshallowdepressionsnearbaseandat themiddle, irregularlypunctatein
middleinacrescent-shape,becominglargerlaterad,thoseinlateral portionselliptical,
andthoseinantero-latera1anglesandapicalportionsparse;lateralportionsandapical
marginwithsparse,suberectreddishbrownsetae;rimsofoutermarginsnearlystraight
laterad,roundedatapex.
Mesosternal processhorizontally projected and angulate, strongly compressed,
extending tothelevel ofprocoxae,withsharplypointedapex (Fig 5); metasternum
withamediangroove,irregularlypunctate,thepuncturessparseandminuteinmiddle,
those in lateral portions largeandsetiferous, each with anerect reddishbrownseta
(0.23-0.55mminlength).
Abdominalstemitesconcentrativelypunctateinanteriorandposteriorportions,
thepuncturescrescent-shaped,becominglargerlaterad,thoseinlateralportionsirregu-
larly punctate; lateral portions with sparse decumbent reddish brown setae (0.4-
0.48mminlength).
Protibiabidentate,apico-externa1denticleacuteinmale,rectangular, roundedat
innercornerandacuteatoutercorner infemale;innerclawof forelegandouterclaw
ofmiddleleg incisedapically, formingtwobranches, theupperbranchof foreleg
about halfthewidthoftheloweroneatthebaseinmale,almost equal in female,the
lowerbranchslightlylongerthantheupperoneinmale,thelowerbranchshorter than
theupperonein female;outerclawof foreleg, innerclawsofmiddleandhindlegs
simpleandacuminate.
Holotype: (3Mt.Bawang,WestKalimantan,Borneo, IV-l990,nativecollector.
Allotype: (isamedataasfortheholotype.Paratypes:8 3 ,samedataas forthe
,
holotype;2 d samelocality as for theholotype,X-l990, nativecollector; , near
Keningau,alt 800m,Sabah,Borneo,16-III-1989,leg.MasaoITO; CrockerRange,
,
Sabah, Borneo, 10-VI-1996, nativecollector; d, Trus Madi, Sabah, Borneo, Vill-
i996. nativecollector.
ThreeNewCa11isteth1(cid:2)fromPalawanand Borneo 151
Callistethusdeclla(cid:1)lbrel'sp nov
(Figs3,6)
Bodylength:18.8mm,width:10.9mm.
Hea pronotum,scutellumandelytradarkreddishbrown;pronotumwithbroad
reddishyellowbandinlateralportions;propygidium,pygidium,andabdominalstern-
itesreddishbrown;metasternumandlegsreddishyellow;dorsalsurfacewithstrong
greenishmetalliclustre,ventralsurfacewithcopperylustre.
Head feebly microsculptured, with sparse, erect reddish brown setae (0.42-
0.55mminlength)alongeyes;clypeusbroadlyrounded,1.95timesaswideaslong,
weaklyre?exedalongmargin,distinctlypunctate, thepunctureselliptical in lateral
portions,partlycoalescentinanteriorportion; fronsirregularlypunctate,thepunctures
beingintermixedwithminutepunctures, thelargeronessparseandroundinmiddle,
becomingdenserandlargerantero-1aterad.
185 timesaswideaslong,weaklyarcuate-sided, roundedinapical
pronotum
half,thenlinearlyandslightlynarrowedbasadinbasalhalf; frontanglesstronglypro-
jectedandacute,hindanglesrectangularwithslightlyroundedcorners;discscattered
with small punctures, which are intermixed with minute punctures (visible under
60x), the formerbecomingslightlylargerantero-laterad;marginalportionsofdisc
withsparse,erectyellowsetae(0.475-0.825mminlength); lateralmarginswithrims
extendjngtobase-lateralportions.Scutellumtriangular,sparselyscatteredwithminute
punctures.
Elytrawith11rowsofpunctures,whichareintermixedwithextremelyminute
punctures(vjsjbleunder60x);intervalbetweenfirstandsecondrowsirregularlyscat-
teredwjthroundpunctures;sidesslightlyarcuatelaterad;lateralmarginsslightlysinu-
ousinanterior1/4,weaklywidenedinmiddle,thennarrowedposteriad;distalmargins
almoststraight;rimsoflateralmarginsthickenedinbasal2/5,becomingthinnerinapi-
cal3/5anddisappearingathindcomers;marginalmembranethin,startingatapical
3/10andextendingtoelytra1apices.
Pygidiumfeeblymicrosculptured,sparselypunctate, thepuncturessmallandin-
termjxedwithminutepunctures,theformerbecominglargeranteriad,partlycoalescent
andreticulatelyruguloseinanteriorportion; lateralandapicalmarginsofpygidium
wjthsparseerectreddishbrownsetae;outermarginswithrimsnearlystraight;apex
rounded.
Mesosterna1processprojectedslightlyupwards,stronglycompressed,extending
Iotheleve1ofprocoxae,with feeblyroundedapex(Fig 6);metasternumwithame-
diangroove,irregularlypunctate,thepuncturesinmiddlesparseandsmall,becoming
larger and denser laterad,eachwithanerect reddish yellow seta (0.52-0.8mm in
length).
Abdominalsternitessparselypunctateinmiddle, thepuncturessmall,becoming
largeranddenserlaterad,withatransverserowofsuberectreddishbrownsetae(0.3-
0.4mminlength)inthemiddleexcept formedianportions.
l52 KaOruWADA
\ (cid:2) \
(cid:2) (cid:2)
l (cid:2)
0
(cid:4)
(cid:5)l
l
E 100' 10S' lie' 11S' l2f l2S' (cid:1) BS' l40'
Fjg. 13. ApproximatedistributionoftheCa11istet1/usexcellensGroup. - a,CpalawanensissP nov;
b,Cdechamb,-ejsp nov;c, C nakaneisp nov;d,Cmoulton10HAUS(cid:2)l910;e,C 'nalayuSOHAUS,
l932;f,Cdi-es.(cid:5)die,(cid:5)iOHAUs, l915;g,Cex'cottonsNONFRIED,1894.
protjbjawjthtwoteeth;apico-external toothacutewith feeblyroundedapexin
bothsexes; jnnerclawof forelegandouterclawofmiddlelegapicallyincised, form-
jngtwobranches,theupperbranchofforelegabout3/4timesthewidthofthelower
oneatthebase,thelowerbranchslightlyshorterthantheupperone;outerclawoffo(cid:3)e
leg,innerclawsofmiddleandhindlegssimpleandacuminate.
ThreeNewCa11istethusfromPalawanandBorneo 153
Holotype: d,CrockerRange,Sabah,Borneo,8-VI-l996,nativecollector
(cid:28) (cid:23)
(cid:7)(cid:18) (cid:27):(cid:66)(cid:70)(cid:72)(cid:73)(cid:10)(cid:35)(cid:55)(cid:52)(cid:68)(cid:71)(cid:65)(cid:60)(cid:36)(cid:56)(cid:19)(cid:29)(cid:40)(cid:58)(cid:45)Ca11istethus(cid:9)(cid:63)(cid:61)(cid:65)(cid:69)(cid:64)(cid:50)3(cid:14)
(cid:21). _ ca11istethus(cid:9)(cid:49)(cid:9)(cid:42)(cid:57)(cid:63)(cid:61)(cid:65)(cid:69)(cid:64), C.palawanensis(cid:59)(cid:66)(cid:70)(cid:72)(cid:73)(cid:10)(cid:36)(cid:56), (cid:53)(cid:45)C
nakanei(cid:35)(cid:55)(cid:52)cdechambrei(cid:59)(cid:68)(cid:71)(cid:65)(cid:60)(cid:36)(cid:56)(cid:30)(cid:32)(cid:41)(cid:45). (cid:39)(cid:58)(cid:56)(cid:50)(cid:21)(cid:51)(cid:34)(cid:43)(cid:58)(cid:54)exce11ens(cid:24)(cid:49)(cid:9)(cid:42)
(cid:57)(cid:37), (cid:44)(cid:50)(cid:16)(cid:13)(cid:20)(cid:48)(cid:26)(cid:12)(cid:35)(cid:55)(cid:52)(cid:1)(cid:25)(cid:22)(cid:31)(cid:50)(cid:11)(cid:17)(cid:36)(cid:56)(cid:6)(cid:62)(cid:71)(cid:75)(cid:67)(cid:50)(cid:2)(cid:21)(cid:47)(cid:51)(cid:8)(cid:15)(cid:49)(cid:4)(cid:3)(cid:46)(cid:38)(cid:57).
References
OHAus,F.,1910. BeitrligezurKenntnisderRuteliden.VII. Annis.Soc.ent.Belg.,54:213-227.
_ lg15. xvII.BeitragezurKenntnisderRuteliden.(Col.Lame11) Stett e'It.Ztg.,76:88-l43.
_ lg32. vI.MalayanRutelinaeinthecollectionoftheFederatedMalayStatesMuseums. Jfeed
MalaySt.Mus.,17:122-143.
MAcHATscHKE, J. W., 1972-'74. Scarabaeoidea: Melolonthidae, Rutelinae. /n WILCOX, J. A(cid:74) (ed(cid:74)),
coteopterumCatalogusSupple"1enta, (ed2), (66): i-ii+1-361[1972](cid:5)i+363-429[1974].Junk,
's-Gravenhage.
E1:ytru,(cid:33)okyo,26(1):153-154,Mayl5,l998
ARecordofDiartigerfo(ssulatusdentlpesNOMURAetLEE
(Staphylinidae,Pselaphinae) fromShikoku,Japan
ShuheiNoMURA
DepartmentofZoology,NationalScienceMuseum(Nat.Hist),
3-23-1Hyakunin-cho,Shinjuku,Tokyo, l69-0073Japan
Djartjgerfo(ssulatusdentipesNoMURAetLEEisasubspeciesofDfossulatuSSHARPbe-
1ongjngtothetrjbeClavigerini,whichhasbeenknownonlyfromSouthKorea.InthisrepO(cid:33)t,
thissubspeciesisrecordedfromShikoku,whichisnewtotheJapanesefauna.
Iwjshtoexpressmyspecial thankstoDr.MasahiroSAKAIofEhimeUniversityforhis
kindofferoftheinvaluablespecimens.