A Redescription of Xylographella punctata (Coleoptera, Ciidae), with Description of a New Tribe

6 Pages·1996·6.1 MB·English

Elyt・,a,Tokyo,24(1):125-130,May15,l996
A Redescriptionof Xy1ographenapunctata(Coleoptera,
Ciidae), withDescriptionofaNewTribe
Makoto KAwANABE
BioindicatorCo., Ltd.,Takada3-16-4,Toshima-ku,Tokyo,171Japan
and
Mutsu0 MIYATAKE
7-38, Kuwabara1-chome, Matsuyama,Ehime,790Japan
Abstract TheJapaneseolidspecies,Xy/og1・aphe/1apunctata,isredescribedand
illustrated.Morphological featuresofthegenusXy1ogapheuaarediscussedindetail,
andanewtribe, Xy1ographe11ini,isestablishedbasedonthisgenus.
Xy1ographe11apunctata,oneof theJapaneseolidspecies,wasdescribedby
MIYATAKE(1985)withonlyabriefdiagnosis.Sincethen,detailedmorphological
featuresof thisspecieshavenotbeendescribedor illustrated.
ThemonotypicgenusXy1ographe11awasestablishedfor theuniquespecies,
x.punctata,whichisconsiderablydifferent inmorphological featuresfrom the
otherknownspeciesofthesubfamilyCiinae.Amoredetaileddescriptionof the
genus, incomparisonwithvariousgeneraofthefamily, isneeded forclarifying
itssystematicstatus. As theresult of our recent study,wehavecometo the
conclusionthatthegenusXy1ographe11arepresentsanewtribeofthesubfamily.
Inthispaper,wearegoingtoredescribeandillustrateX.punctata,andtoestablish
anewtribe, Xy1ographellini.
Theabbreviationsusedhereinareas follows:PL-medic-longitudinal length
ofpronotum;PW-greatestwidthofpronotum;EL-medic-longitudinal length
ofelytrafromthebaseofscutellumtotheelytra1apices;EW-greatestcombined
widthofelytra;TL-sumofPLandEL.
Beforegoingfurther,wewishtoexpressourgratitudetoDr.S.-I.UENoof
theNatjona1ScjenceMuseum(Nat.Hist),Tokyo, forhisreadingthemanuscript
andgivingususefulsuggestions.
TribeXylographellininov
Typegenus: Xy1ographe11aMIYATAKE,1985.
126 Makot0 KAwANAB三I and Mutsu0 MIYATAKI
Includedgenera:Xy1ographeliaMIYATAKEandScolytoclsBLAIR?
Antennaewith largeand compactclub; terminal segmentofclubprovided
withmorethan fivesensi11ifers. Labium3-segmented,prementumelongateand
pentagonal; insertion of labial palpi near themiddleof prementum; terminal
segment of labial palpus widened. Prosternum relativelyshort, procoxaesub-
conical, strongly projecting beyond the level of presternal process. All tibiae
spinulate latera11y. Meso- and metafemora each with longitudinal row of
a
setiferouspuncturesondorsum. NinthabdominalsterniteinmaleY-shaped.
Remarks. Thegenus Xy1ograp/1e11abelongsto thesubfamily Ciinaein the
senseof LAWRENCE(1974).Thetribesof thesubfamilyCiinaehavebeenmainly
determinedbyfeaturesof theprocoxae,andup tothepresent, two tribes,Ciini
andOrophiini,arerecognized.ThetribeCiinihastransverseorglobularprocoxae
and thetribeOrophiinihassubconica1ones. Though procoxa1conformation is
nodoubt important fordefiningtribesofthesubfamily, thereareother features
that should be taken up for tribal classification. For instance, labialstructure
is identical between theCiini andOrophiini, but is fundamentallydifferent in
Xy1og1'aphelia,thoughthisgenusisapparentlyalliedtotheOrophiiniinprocoxa1
features.Besides,conformationofantennalclubwith itssensiIlifersisuniquein
Xy1ographe11a,nointermediaryinthecharacteristicsoftheseorganshavingbeen
knownbetweenthisgenusandthemembersoftheothertribes.Thesepeculiarities
seemtoustosuffice for recognitionofanewtribe forthegenusXy1og・liphe11a,
whichshouldbecalledXy1ographe11ini.
GenusXylograpltellaMIYATAKE,1985
Xy1og''ap/1e//aMIYATAKE,1985,Coleopt.JapanCol.,Osaka,3:279.
TypeSpecies:Xy1ograp1/e11apun(fataMIYATAKE,1985,bymonotypy.
Bodyshort,cylindrical,stronglyconvex,ratherstout,parallel-sided,glabrous
ondorsum;vestitureconsistingofveryshort finehairs.Headstronglydeclined,
almostexposedfrompronotum;labiumwithprementumelongateandpentagonal,
produced forward; insertion of labial palpus near themiddle of prementum;
terminalsegmentoflabialpalpussubtriangular;genalridgeverystronglycarinate;
antennal fossaverydeep.Antenna10-segmented;8thto10thsegmentsformjng
acompactclub;10thsegmentprovidedwithsevenormoresensi11ifers.Pronotum
Somewhat constricted anteriorly, narrowly margined laterally; lateral margjns
COa「Selycrenulate;anteriormarginsimpleinbothsexes;anteriorcomersobtusely
an9ulateinlateralview.Elytrairregularlyandumbilica11ypunctate;suturenot
inflexedat apex. Hindwing fullydeveloped.Presternal disc in front ofcoxae
She「t, t「ansverselyexcavated;procoxaeprojecting;presternalprocessshort and
Very thinly lamellar. All tibiae strongly expanded apicad, spinulose laterally
MeSo-andmetafemora1ongitudina11ysetoseondorsum.Tarsal formula44
4 jn
bothSexes.Abdominal foveainmaleabsent.NinthsterniteinmaleY_shaped
RedescriptionofX、,/og・la/)/Ie//a/)u11(fata 127
Secondarysexual charactersnot found.
Ren7arks. This genus issomewhat allied to theSamoan genus Scolytocls
BLAIRingeneral features,but inthelattergenustheantennais9-segmented, the
elytra1puncturesareseriateand the tarsal formula is3-3-3.
Xy1ogrllphelilllpullctataMIYATAKE,1985
[Japanesename:Kokikui-tsutsukinokomushi]
(Figs.1-10)
Xy1og1・ap/1e/1apuncttltaMIYATAKll,1985,Coleopt.JapanCol.、Osaka,3:280-281,pl 46, fig 4.
Redescl・tption. Male. Bodysubquadrate,somewhatstout,shiny ondor-
sum,stronglyconvex.Color dark reddishbrown;mouthpartsexcludingmandi-
bles, antennal funicles and tarsi yellowish brown. Punctures on dorsum each
bearingafine,shortandinconspicuoushair.
Headlargelyexposedfrompronotum,somewhatstronglyconvex,finelyand
conspicuouslyreticulated,closelypunctate;punctureslargebutshallow; fronto-
clypea1ridgenarrowlymarginedandveryslightlyproducedoneachside;mandi-
blesnotsalient anteriorly.
Pronotum slightly broader than long; anterior margin not ridged, gently
rounded; anteriorcornersobtuselyangulateinlateral view, forminganangleof
Fig. 1. Xy/og1'ap/1e/1apun('lataMIYATAKE
128 Makoto KAwANABEand Mutsuo MIYATAKE
about 135°; lateral margins narrowly ridged, invisible from above, relatively
stronglydivergent frombasetobasal two-fifths, then rather rapidlyconvergent
apicad, feebly arcuate in lateral view; basal marginnarrowly ridged, and very
slightlybisinuate;hindanglesbroadlyroundedinlateralview;dorsumsomewhat
shiny, irregularly, distinctly and closely punctate; punctures uniform in size,
umbiliform,somewhatdistorted,shallow, largebutclear,eachpuncturebearing
averyshortandfinehair; intersticesbetweenpuncturesconspicuouslyandfinely
reticulated. Scutellum small, triangular, entirely glabrous. Elytra subquadrate;
sidesslightlydivergent frombasetobasaltwo-thirds, thengraduallyconvergent
apicad, invisible from aboveexcept for basal corners; disc somewhat shiny,
irregularlyandverycloselypunctate,somewhatsmallerbutsimilarinconformation
to thoseonpronotum; puncturesclearandclose,seeminglyconfluent in
some
places,eachbearingashortandfinehair;suturenarrowlymargined.
Presternaldiscin frontofcoxaetransverselyandsomewhatconspicuously
depressed;presternalprocessreduced intoaverythin lamellaandon thesame
level as thebaseofprosternum. First abdominal sternitedevoid ofpubescent
fovea.
Eighthabdominalsternitesubtrapezoida1,withtheapical marginshallowly
emarginateat themiddle,bearingamixtureoflongandshorthairs.Tegmenvery
narrowlyelongate,somewhatneedle-shaped,sidessubpara11e1frombasetobasal
seven-tenths,thengraduallyconvergentapicad,withconspicuousgranulesinapical
parts
arfatzon加tiletypeserfes.
Male& female(n=22)
TL (mm):1.36-1.65(1.49±0.08) EW(mm): 0.7-0.82(0.77±0.04)
TL/EW:1.86-2.02(1.93±0.05) PL/PW:0.82-0.93(0.89±0.03)
EL/EW:1.07-1.l9(1.14±0.03) EL/PL:1.3-1.53(1.43±0.05)
Specimens,e:lcamlned. [Honshu] <TochigiPref>10exs., Irohazaka, Nikko
City, 5-IV-1992, M. KAwANABE leg. <Gifu Prof.> 3 exs., Hakusan, Nogo,
Neo-mura,Motosu-gun,20-V-1993, K.SETsUDAleg.<NaraProf.>10exs., Mt.
Omniesan,7~9-VIII-1989,M.KAwANABEleg.[Shikoku]<EhimeProf.>2exs.,
Mt.Ishizuchisan,22-VII-1958,M.MIYATAKEleg;1ex.,0damiyama,10_VI_1984,
E.YAMAMOT01eg;2exS.,samelocality,27~28-IV-1989,M.KAwANABEleg;4
eXS.,Mt.0mOgosan,23-VII-1989,M.KAwANABEleg.<TokushimaPref>75exs.,
Mt.Tsuru9isan,9-VIII-1954,M.HRIAIleg.(includingholotypeand21paratypes);
lex., IChinomori~Fujinoike,Mt.Tsurugisan, l2-VII-1976,M.MIYATAKEleg
ThesespecimensaredepositedinthecollectionoftheEntomologicalLaboratory,
Figs. 2-10. Xy1og''aphe11apunclataMIYATAKE. - 2, Antenna;3,antennalclub;4,labjum,
ventralview;5,prothorax,ventralview;6,prothorax,frontalview;7,meso-andmatasterna,
ventralview;8,leftprotibia;9,leftmiddleleg,dorsalview;10,eighthandninthabdominal
sternitesinmale.Scalesfor Figs 2,5,6,7,8&9:0.1mm; for Figs 3,4&10:0.05mm
t29
MakotoKAwANABEandMutSuoMIYATAKE
130
collegeofAgriculture,EhimeUniversity,Matsuyama,Japan.
Distribution. Japan(Honshu,Shikoku).
Fomesfomentarius(L:FR)FR.(TsuriganetakeinJapanese)
Hostfungus
要 約
川那部 真・宮武陸夫:コキクイッッキノコムシの再記載およびこれに基づく族の創
設. - コキクイッッキノコムシXy1ographe11apunctataは, 著者の一人である宮武により,
1985年に原色日本甲虫図鑑 (m) に新属新種として記載された種である. しかしこの記載は短
くて不十分であり, またその後に再記載がなされていなかったので, 著者らは本種について詳
細な再記載を行った. また本種がッッキノコムシ亜科Ciinaeに属する他の種とはいちじるしく
異なる形態的特徴をもっことから, 他属との詳細な比較検討を行い, 明らかに既知の族とは異
なる独自の族を形成していると認められたので, コキクイッッキノコムシ属?y1ographe11aに基
づいてコキクイッッキノコムシ族Xy1ographe1liniを新し;く設立して記載した.
References
BLAIR, K. G., 1938. Heteromera, Bostrychoidea, Malacodermata and Buprestidae. Insects of
Samoa,4(2):67-109.
LAWRENCE,J. F., 1971. Revisionof theNorthAmericanCiidae(Coleoptera). Bull. Mus. comp.
Zoo1.,142:419-522.
- 1974. ThelarvaofSphindocisdentico11isFALLandanewsubfamilyofCiidae(Coleoptera:
Heteromera). Brev1ora,Ca,nbridge,(424):1-14.
MIYATAKE,M.,1985. Ciidae. InKUROSAWA,Y.,S.HIsAMATsU&H.SAsAJI(eds),TheColeoptera
ofJapanlnCo1o,,3:278-285 [incl.pl 46]. Hoikusha,Osaka.(InJapanese)