Table Of ContentElytra, Tok:yo,23(2):177-185,November15,1995
Noteson theTaiwaneseSpeciesof theGenus
Arthron,tacra(Coleoptera,Tenebrionidae)
Masahiro SAIT0
4-3-23-115,Mikunihigashi,Mikuni-cho,Sakai-gun,FukuiProf.,913Japan
Abstract Threenewlagriine tenebrionidbeetles,Arth・lo,nacrabico1o,sp nov.,A.
imasakaisp nov andA tanasp nov.,aredescribedfromTaiwan.AkeytotheTaiwanese
speciesofthegenusisalsogiven.
BeforeSAsAJI's account (1986), thegenus Arthromacla KIRBY, 1837, has been
represented in Taiwan onlyby A abnormalisKoNo, 1929.SAsAJl (1986) addedone
newspecies, A fo(rmosana, andoneobscurespeciesto the Arthromacra faunaof
Taiwan.Followinghim,MAsuMoTo(1988)describedtwonewspecies,A tsuyukiiand
A minuta, listedthethenknownspeciesofthegenus,and transferredA abnormalis
tothegenusHosoha,nudamaestablishedbyhimself.
Inthispaper,Iamgoingtogivenotesonthethreeknownspecies,andtodescribe
threenewspeciesunderthenamesArthromacrabico1o1・sp nov., A. imasakaisp nov.,
and A tana sp nov. A key to theTaiwanesespeciesof thegenusArth1・omacrawill
beprovided.
Beforegoingfurther,IwishtoexpressmydeepgratitudetoProfessor Hiroyuki
SAsAJI(Fukui University, Fukui) forhiscontinuousadviceandencouragement,and
to Dr. Shun-lobi UENo of the National Science Museum (Nat. Hist), Tokyo, for
critically reading themanuscript of thispaper. Hearty thanks arealso due to Mr.
ShoichiIMAsAKA(Nagasaki)forhiskindhelpinofferingmaterials,andtoMr.Masaru
OsADA(Fukui) for takingphotographsinsertedinthispaper.
Alltheho1otypesandallotypesofthenewspeciestobedescribedbelowwillbe
depositedinthecollectionoftheDepartmentofZoology,NationalScienceMuseum
(Nat. Hist), Tokyo.
GenusArthromacraKIRBY,1837
ArtltromacraKIRBY,1837,FaunaBoreali-Americana,238; typespecies: Lag''IaaeneaSAY,1824.
MAsUMoTo (1987)placed thisgenusin theStatirini.SAsAJl (1986)recordedan
unidentifiedspecies, whichisomitted fromthispaper.
178 MasahiroSAITo
ArthromacratsuyukiiMAsUMoTo,1988
[Japanesename:Samehada-hamushi-damashi]
ArthromacratsuyukiiMAsuMoTo,1988,Ent.Rev.Japan,43:38-39,pl 3,fig5,pl 6,figs28-29;type
locality: NanfengshaninTaiwan.
Notes. Thefemaleofthisspeciesisverysimilartothemale.Theterminalsegment
oftheantennaislongerthanthethreeprecedingsegmentstogetherasinthemale(in
mostspeciesofArthromacra, theterminalsegmentof theantennain thefemaleis
shorterthaninthemale).Thisistheuniquecharacternotfoundinanyothercongeneric
speciesfromTaiwanandJapan.
Specimene:x:amined 1 Lushan,Taiwan, l2-V-l978,S. IMAsAKAleg.
,
ArthromacraminutaMAsUMoTo, l988
[Japanesename:Chibi-ao-hamushi-damashi]
ArthromacraminutaMAsuMoTo,1988, Ent.Rev.Japan,43:39-40,pl 3, fig 6,pl 6, figs30-31; type
locality:Mt.LalashaninTaiwan.
Specimense)camined 3(j'(1',1?,Jiuyuehtan, Taiwan, l5-IV-l975,S. IMAsAKA
leg;1 Nanshanchi, Taiwan, 28-IV-1975,S. IMAsAKAleg;19,Fenchihu, Taiwan,
,
21-IV-1975,S.IMASAKAleg.
Arthromacra fomosanaSAsAJI, l986
[Japanesename:Taiwan-ao-hamushi-damashi]
(Figs.4-5)
Arthromacrafo(rmosanaSAsAJI,1986, Mem. Fac.Educ.Fukui Univ.,(II),(36):11-13, figs 8-10; type
locality:Tsifeng [sic] inTaiwan.
Notes. Thisspecies isverysimilar toA decora(MARsEuL,1876) fromJapan,
and isnotseparablefrom it byexternal characteristics. However, theparameresof
themalegenitaliaareroundedatthetipsintheformer,whichisclearlydifferent from
verynarrowlytruncated tipsinthelatter. 0ntheotherhand,A formosanaresembles
AamamlanaNAKANE,1963,fromIs.Amami-0shima,butthisJapanesespeciessparsely
bearsrather longerecthairsontheelytra1disc.
Specimensexamined. 1(j',2 ,Meifeng,Taiwan, l5-VI-1978,S.IMAsAKAleg;
Ie,samelocality,16-VI-1978,S. IMAsAKA leg; Ie,samelocality,20-V-1977,S.
IMAsAKAleg; 1 ,Mt. Lalashan,Taiwan, 29-IV-l987, T. 0cH1leg.
ArthromacrabicolorM.SAITo,sp
nov.
[Japanesename:Futairo-hamushi-damashi]
(Figs.1,6-7)
Description. Male. Body elongate, about 4 times as long aswide. Dorsal
surfaceofbodyalmostcopperyincolourwithmetalliclustre,sometimeswithgreenish
TaiwaneseSpeciesofArthromac''a 179
Figs. 1-3. A,・th1・o,nac,・aspp fromTaiwan. - 1,A bico1o1・M.SAITo,sp nov;2,A. imasak;alM
SAIT0,sp nov;3,A talrlaM.SAIT0,sp nov.
shimmer, forehead,apicalandbasalmarginsofpronotumnarrowly,andscutellum
with bluish greenmetallic lustre; ventralsurfacebluish green with metallic lustre.
Mouthpartdarkbrownexcept for labrum;antennaedarkbrown,2ndsegmentand
baseof3rdsegmentpale;legsalsodarkbrown,sometimeswithgreenishlustre.Dorsal
surfaceofbodyalmosthairless;ventralsurfacesparselycoveredwithpalehairs;mouth
parts, legsandantennaecoveredwithshort palehairs.
Headnearlyrhombic,slightlynarrower thanpronotum;discverystronglyand
coarsely punctate, but usually narrowly impunctatebehindmiddle; interspaces of
punctures almost smooth; antennal insertionsdistinctly raised, without punctures;
frontoclypea1furrowsomewhatwidelyandweaklyarcuate. Clypeusabout 2.5times
aswideaslong,sparselypunctate,anteriormarginwidelyandveryweaklyarcuate.
Labrum about 175-1.9 timesaswideas long, rathersparselywith finepunctures,
anterior margin arcuate. Antennaeslender, about a half as long as body length;
terminalsegmentalittlelongerthan3precedingsegmentscombinedandabout l3
timesaslongasthedistancebetweeneyes,surfacefrosted.Relativelengthsofantennal
segments frombasal toapical: 0.55,0.5,1.0,1.0,1.0,1.0,1.0, 1.0, 0.95,0.9, 3.0.
Terminalsegmentofmaxillarypalpuscultrate,about18-1.9timesaslongaswide;
innercorner rectangular.
Pronotum subcylindrica1, widest at base,as wideasmedian length, distinctly
narrowed anteriad, swollen in middle, with anterior margin narrowly carinate-
180 MasahiroSAITo
marginate;discverystronglyandcloselypunctate, thepuncturesalittleconfluent,
almostevenlyarranged,sometimeswithapairofindistinctdepressionsinlateralareas
alittlebehindthemiddle.Scutellumtriangular,truncatedorroundedatthetip,surface
almostsmooth.
Elytrasubpara11e1,about2.6-2.8timesaslongaswide,andabout4.8-4.9times
aslongaspronotum;discverystronglyandcloselypunctate,thoughsparselypunctate
alongsuture; punctureson elytral disc larger than those on pronota1disc, often
confluent transverselyand formingarugosestructure.
Legsslender; hind femur about 13-1.4 timesas longaselytra1width; basal
segmentofhindtarsusabouttwiceaslongas2ndsegment.
Malegenitalia:parameresabout 19-2.0timesaslongaswide, thetipsunited
witheachother,curveddownwardsandsharplypointed;basalpieceabout4times
aslongaswide,andabout3 timesaslongasparameres.
Female. Similartomale,butthebodyislargerandstouter,about3.7timesas
longaswide;terminalsegmentofantennaaslongas3precedingsegmentscombined.
Length:e,7.5-8.2mm(7.5intheholotype);9,10.3-11.2mm(11.2intheallotype).
Typeseries. Holotype: Nanshanchi, Taiwan, 17-IV-1974, K. SuGINo leg.
,
Allotype: Shenmu, Taiwan, 14-V-l977, H.FUJITAleg.Paratypes: I ,samedata
,
astheholotype;1 1 Nanshanchi,Taiwan, l9-IV-1975,S.IMAsAKAleg;1(j',same
, ,
locality,28-IV-1975,S. IMAsAKAleg.
Notes. ThisnewspeciesresemblesA fo(rmo.sanaSAsAJl,butdiffersfrom it in
thecopperydorsalsurfaceandin thesharplypointed tipsofparameres.
ArthromacralmasakaiM.SAITo,sp nov.
[Japanesename: Imasaka-hamushi-damashi]
(Figs2,8-9)
Description. Male. Bodyelongate,about4timesaslongaswide.Bodywholly
greenwithmetalliclustre,sometimeswithcopperylustre;mouthpartsdarkyellowish
brownexcept for labrum;apicalpartof terminalsegmentofmaxillarypalpusdark
brown;antennaeyellowishbrown,gradually becomingdarker apicad; legsalmost
yellowishbrownexcept for coxae.Variationofbodycolour aswillbenoted later.
Dorsalsurfaceofbodyalmosthairless;ventralsurfaceofbody,mouthparts,legsand
antennacoveredwithpalehairs.
Headnearly rhombic,slightlynarrower thanpronotum; disc verystronglyand
coarsely punctate; antennal insertionsdistinctly raised, withoutpunctures; fronto-
clypea1 furrowdeeplyand weaklyarcuate. Clypeusabout 2.5-2.8 timesaswideas
long,sparsely punctate, anteriormarginwidely and veryweakly arcuate. Labrum
about17-1.9timesaswideaslong,rathersparselypunctate,anteriormarginarcuate.
Antennaeslender,aboutahalfaslongasbodylength;terminalsegmentalittlelonger
than3precedingsegmentscombinedandabout14-1.7timesaslongasthedistance
betweeneyes, surface frosted. Relative lengthsof antennalsegments from basal to
TaiwaneseSpeciesofArth・to,nacta l8]
4 5 6 7
8 9 10 11
Figs.4-11. MalegenitaliaofArth'omacraspp fromTaiwan - 4-5,A fo(rmosanaSAsAJI; 6_7,
A bicolor M.SAITo,sp nov;8-9,A. imasakaiM.SAIT0,sp nov;10-ll,A tanaM.SAITo,
sp nov;4,6,8,10,dorsalview;5,7,9,11,lateralview.(Scale:1mm)
182 MasahiroSAIT0
apical:0.6,0.5,0.85,0.9,1.0,1.0,1.0,1.0,0.9,0.8,3.0.Terminalsegmentofmaxillary
palpuscultrate,about2.0timesaslongaswide;innercorneralittleobtuse.
Pronotumsubcylindrica1,widest at base,aswideasmedian length, distinctly
narrowed anteriad, swollen in middle, with anterior margin narrowly carinate-
marginate;discverystronglyandcloselypunctate, thepuncturesalittleconfluent,
almostevenlyarranged,sometimeswithapairofindistinctdepressionsinlateralareas
alittlebehindthemiddle.Scutellumtriangular,truncatedorroundedatthetip,surface
structurevariablefrombeingsmoothtorugose.
Elytrasubpara11e1,about2.8-2.9timesaslongaswide,andabout5.1-5.5times
aslongaspronotum;discstronglyandcloselypunctate, thoughsparselypunctate
along suture, the punctures often confluent transversely and forming a rugose
structure.
Legsslender;hind femoraabout 13-1.4 timesas long aselytra1width; basal
segmentofhindtarsusabouttwiceaslongas2ndsegment.
Malegenitalia:parameresabout1.9-2.0timesaslongaswide,thetipsunitedwith
eachother,curveddownwardsandsharplypointed;basalpieceabout19timesas
longaswide,and4.6timesaslongasparameres.
Female. Similartomale,butthebodyislargerandstouter,about3.7-3.9times
aslongaswide;terminalsegmentofantennaaslongas3precedingsegmentscom-
bined.
Length: , 9.0_10.3mm(10.6 in theholotype); 1, 9.0-11.5mm (10.6 in the
allotype).
colour variation. Thisspeciescanbeseparableat firstsight into twoco1ou「
formsoftheelytra:oneincludingtheholotypeisbrightgreenwithmetalliclust「e,
andtheotherdarkgreenwithsomewhatdullmetalliclustre.Thelegsandtheantennae
aresometimesdark brown.
Typeseries. Holotype:?,Meifeng,Taiwan,3-V-1975,S.IMASAKAleg.Allotype:
,samedataastheholotype.Paratypes:9 2 ,samedataastheholotype; l
, ,
Mt. Alishan, Taiwan, 22-IV-l975, S. IMAsAKA leg; 2 3 Meifen9, Taiwan,
, ,
13_V_1975,S. IMAsAKAleg; 2 I , samelocality, 19-V-1977, S. IMASAKAle9.;
,
4 ,same locality, 15-V-1978,S. IMAsAKAleg; 3 1 Mt. LalaShan, Taiwan,
, ,
29-IV-1987,T. 0cHIleg.
Notes. ThisnewspeciesissimilartoA bicolor M.SAITo,sp nov.,but diffe「S
fromit inthemoreelongatebodywhichiswhollygreen.
Arthromacra tanaM.SAIT0,sp nov.
[Japanesename: Ibushi-hamushi-damashi]
(Figs 3,10-11)
Description. Male. Bodyelongate,about4timesaslongaswide.Wholebody
somewhatleathery.Dorsalsurfacedarkcopperywithsomewhatdullmetalliclust「e,
sometjmeswjthgreenish lustreinsomeplaces; palpidarkyellowishbrown; apical
TaiwaneseSpeciesofArt11rornacra 183
partof terminalsegment ofmaxillarypalpusdarkbrown;antennaedarkyellowish
brown, graduallybecomingdarker apicad; legsyellowishbrown, apical halvesof
femoradarkbrownwithcopperylustre,theirboundarybeingindistinct.Dorsalsurface
of body almost hairless; ventralsurfaceofbody,mouthparts, legsandantennae
coveredwithshortpalehairs.
Headbroadlyrhombic,slightlynarrower thanpronotum;discverycoarselyand
stronglypunctate,sizeandformofpuncturesnotuniform,enlargedinmiddle;antennal
insertionsdistinctlyraised,withoutpuncturesforwards; fronto-clypea1furrowdeep
andarcuate.Clypeusabout2.9-3.3timesaswideaslong,coarselypunctate,anterior
marginwidelyarcuate. Labrumabout19-2.0timesaswideaslong, rathersparsely
punctate,anteriormarginarcuate.Antennaeslender,about ahalfas longasbody
length; terminalsegmentas longas5precedingsegmentscombinedandabout2.3
timesaslongasthedistancebetweeneyes,surfacefrosted.Relativelengthsofantennal
segmentsfrombasaltoapical:0.6,0.5,0.9,0.9,1.0,1.0,1.0,0.9,0.8,0.7,4.5.Terminal
segmentofmaxillarypalpuscultrate,about1.6-2.0timesaslongaswide;innercorner
obtuse.
Pronotum subcylindrica1, widest at about middle, as long as wide, distinctly
narrowed anteriad, swollen in middle, with anterior margin narrowly carinate-
marginate; disc very coarsely and strongly punctate, the punctures transversely
confluent and forming rugose structure in some places, with a pair of distinct
depressionsinlateralareasalittlebehindthemiddle.Scutellumtriangular,truncated
atthetip,surfacestructurevariablefrombeingsmoothtorugose.
Elytrasubpara11e1-sided,about 2.7-2.8timesaslongaswide, andabout 5.0-5.2
timesaslongaspronotum;discsomewhatcoarselypunctate,thoughsparselypunctate
along suture, the punctures somewhat cone-shaped, confluent transversely and
formingrugosestructure; interspacesofpuncturesbroadinsomeplacesandmaking
twopairsof longitudinal intermittent bands.
Legsslender; hind femora about 13-1.4 timesaslong aselytra1width; basal
segmentofhindtarsusabout twiceaslongas2ndsegment.
Malegenitalia:parameresabout1.7-1.9timesaslongaswide,withratherstrong
constrictionat base, the tipsbeing unitedwitheach other, curveddownwardsand
dully rounded. Basalpieceabout 4.5timesaslongaswide, and about 3.6 timesas
longasparameres.
Female. Similar tomale,butthebodyislargerandstouter,about3.6timesas
longaswide;elytraweaklybroadeningposteriad;terminalsegmentofantennaabout
aslongas4precedingsegmentscombined.
Length: , 9.2-10.6mm (10.6 in the holotype); 9, 11.6-12.5mm (12.5 in the
allotype).
Typeseries. Holotype: ,Meifeng,Taiwan,3-V-1975,S.IMAsAKAleg.Allotype:
. Tsuifeng,Taiwan,2-V-1978,A.SHINoHARAleg.Paratypes:1e,samedataasthe
allotype; l I Sungkang, Taiwan, 4-V-1978, A. SHINoHARA leg; I Meifeng,
, , ,
Taiwan,16-V-1978,S. IMAsAKA leg.
184 MasahiroSAITo
Notes. ThisnewspeciesissimilartoA.imasaka1M.SAITo,sp nov.,butdiffers
fromthelatterinthewhollydarkcopperybodyandintheterminalsegmentofantenna
almostaslongasthe5precedingsegmentscombined(inmale) oralmostaslongas
the4precedingsegmentscombined(infemale).
KeytotheTaiwaneseSpeciesoftheGenusArthromacra
Elytra densely and independently punctate, never confluent; interspaces of
puncturesratherflatwithshagreenedstructure.Pronotumverycloselypunctate,
leavingalmostnospacesofpunctures,butthepuncturesarehardlyconfluent.
f Dorsalsurfacedarkgreen incolour fsuyuｽz MAsUMoT
Elytradenselypunctate,moreor lessconfluent transverselyand formingrugose
structure, interspaces of punctures swollen and almost smooth. Pronotum
denselypunctate,interspacesofpuncturesdistinct,thepuncturesmoreorless
confluenttransversely 2
2 Terminalsegmentofantennashorterthan4precedingsegmentscombinedinmale
anddistinctlyshorter than4precedingsegmentscombinedin female.Colour
ofelytra1discgrassywithclearmetalliclustre
Terminalsegment ofantennaalmost aslongas5precedingsegmentscombined
inmaleandalmostaslongas4precedingsegmentscombinedinfemale.Elytra1
surfacesomewhat leatherywithmoreor lessdullmetallic lustre;colourdark
coppery A tanaM.SAIT0,sp nov
Terminalsegment of antennadistinctlyshorter than thedistancebetweeneyes
Interspacesofpuncturesonheadandpronotummicroshagreened,metalliclustre
duller than that ofelytra.Colourofdorsalsurfacecopperytogoldengreen.
A minuta MASUMOT0
Terminalsegmentofantennaat leastaslongasthedistancebetweeneyes,usually
longer. Interspaces of punctureson head and pronotum without microsha-
greenedstructure,metalliclustreasonelytra 4
4 Parameresofmalegenitaliadullyroundedatthetip.Puncturesofelytraunevenly
arranged.Bodysomewhatbroad.Colour ofdorsalsurfacegoldengreen
A fOt「mOSanaSASAJI
Parameresofmalegenitaliasharplypointedatthetip.Puncturesofelytraevenly
andcloselyarranged. Bodymoreelongateandsubparalle1-sided. _ .. _ 5
5. Dorsalsurfaceofbodyalmostcoppery;ventralsurfacebluishgreen.Elytraabout
2.6-2.8timesaslongaswide,about4.8-4.9 timesaslongaspronotum. ....
A bicolor M.SAITo,sp
nov
Whollygreen.Body largeandveryelongate;elytraabout 2.8-2.9timesaslong
aswide, andabout5.1-5.5 timesaslongaspronotum
A. imasakai M.SAITo,sp nov
TaiwaneseSpeciesofArthromacra 185
要 約
斎藤昌弘:台湾産アオハムシダマシ属について. - 台湾のアオハムシダマシ属について, 佐々
治(l986)以前にはAabnormalisKONoのみが知られていた.佐々治(l986)はl新種を追加し,の
ちに益本(1988)は2新種を追加してリストを作成した.今回,3新種, フタイロハムシダマシAb_j
Colo「M・SAIT0, イマサカハムシダマシA. imasakaiM.SAIT0, イブシハムシダマシA tanaM.sAIT0を
記載し, 全種を検索表に示した.
References
BoRcHMANN,F.,1936. ColeopteraHeteromeraFam.Lagriidae. InWYTsMANN,P.(ed),(:lion.Ins.,(204):
1-561,9pls. LouisDesmet-Verteneui1,Brexe11es.
MAsuMoTo, K.,1988. AstudyoftheTaiwaneseLagriidae. Ent.Rev.Japan,43:33-52,pls3-6.
SAsAJl, H., 1986. TheCucujoidea(Insecta:Coreoptera)collected bytheNagoya UniversityScientific
ExpeditiontoFormosain1984. Me,n.Fac. Educ.FukuiUniv.,(2),(36):1-14.
Elytra,Tokyo,23(2):185,November15,1gg5
AnIndoorCollectingRecordofHy1otrupesbajulus
(Coleoptera,Cerambycinae) inWesternTokyo
TatsuyaNnsAT0
BioindicatorCo.,Ltd.,Takada3-16-4,Toshima-ku,Tokyo, l71Japan
Attheendof theyear1991,Mr.T.WAKEJIMAcollectedastrangeca1lidinecerambycid
speciesathishomeinHachiohji-shiofwesternTokyo.HehadaNewYearEvepartywith
somefriendsofhis,andatthatnight,mightbetoodrunkonwine.Thecerambycidwasshattered
byhishandbecausehefailedtoseeitclearlyandthought itasattyoracockroach.After
that, thedamagedspecimeninquestionwassubmittedtomeforidentification.Atasight,it
wasdeterminedas Hy1otrupesbajulus (LINNE, 1758), which iswidespread in thePalearctic
andpartofNorthAmerica.Thecollectingdataareasfollows:1(j',Terada-machi (indoor),
Hachiohji-shi,Tokyo,Japan,31-XII-1991,T.WAKEJIMAleg.
Hy1otrupesbaf'tdushasso farbeenunknown fromoff thecontinentalsideof Asia; i.e.,
Siberia,Shanghai,andsoon.Thelarvaofthespeciesisawellknownboreroflumberandhas
strongtolerancefordriedcondition.Thespecimenpresentlyexaminedismostprobablyderived
fromthenorthernEuropemadefurnitureathishome.
Iam9ratefu1toMessrs.T.WAKEJIMAandY. KUsAKABEfor their kindsupplyingwithan
interestingspecimen.
