Distribution of the Anoplophora Species (Coleoptera, Cerambycidae, Lamiinae) in Okinawa Island, Southwest Japan

7 Pages·2001·7.4 MB·English

by  Ohbayashi, N

Elyt1・a, nokyo,29(2):284-290,November15,2001
DistributionoftheAnop1ophoraSpecies(Coleoptera,Cerambycidae,
Lamiinae)inOkinawaIslan SouthwestJapan
NObu0OHBAYASHI
EntomologicalLaboratory,FacultyofAgriculture,EhimeUniversity,
3-5-7,Tarumi,Matsuyama,790-8566Japan
Abstract LocaldistributioninOkinawaIslandof theRyukyusofthethreecer-
ambycidbeetlesbelongingtothelamiinegenusAnop1ophol・aisanalyzedonthebasisof
field survey and re-examination of old specimens. A,top1ophoraoshimanaistheonly
speciesautochthonoustotheislandandisnowrestrictedtothecentralpart.Anop1opho,-a
malasiacaseemstohaveinvadedintoOkinawafromthemainlandofJapansometimein
the1970'sandisnowmainlyfoundinorangeorchardsinthenorthernarea,probablyhav-
ingbeendrivenbyAnop1ophoramacularia,whichmayhaveinvadedintothesouthernpart
oftheislandinthe1990's.
Introduction
AlthoughAnop1ophoraoshimanahadbeenconsidered theonlyspeciesof the
genuSAnop1ophoraOccurringinOkinawaIsland(BREUNING,1961;MAKIHARA,1976),
thereweresomespecimens identicalwithA malaslaca inmy collection aswasal_
readyrecorded(0HBAYAsHI,1992).Besides,Icollectedsomespecimensidenticalwjth
A maculariaonthisislandin1993.Afterthatin1999, Iaskedmy friendsresidingin
OkinawaIslandforcollectingasmanyAnop1ophoraspecimensaspossible.Ialsotried
toexamineoldspecimensofthegenusAnop1ophoracollectedonthisislandinthecol_
1ectionsoftheUniversityoftheRyukyus,OkinawaAgriculturalExperimentStation,
HokkaidoUniversityandEhimeUniversity.
In2000, IvisitedOkinawaIslandandobservedbymyselfthehabitatsofthese
specieswiththehelpofmyfriends.SomeofthelivingspecimensoftheAnop1,ophora
speciescollectedduringmysurveywerebroughttotheEntomologicalLaboratoryof
EhimeUniversity.Theywerepairedandplacedinplasticcageswithlivingtwjgsof
Mellaazedarach,andthematingbehaviorofthesecoupleswasobserved.
Iwishtodedicatethisshort report tothelateDr.YoshihikoKUROSAWAfor his
usefuladvicegivenattimesonmystudyoftheCerambycidae.Hesuggestedmedif_
ferences of A malasiaca andA maculariawhenthelatterhadbeenusuallyregarded
asasynonymoftheformer. IwouldliketoexpressmysinceregratitudetoMessrs.
SeijiINADAofOkinawaPrefectureandMr.YusakuSUGIURAofourlaboratorywhoac_
companiedmeonmycollectingtriptotheOkinawaIslandin2000.Iamalsomuchjn_
debted to Dr. Masako YAFuso and Mr. Takeshi SAsAKl of the University of the
Anop1op11orainOkinawaIsland 285
Fig 1. Habjtus of Anop1ophora species from Okinawa Island. - a, b, A. oshimana;C, d, A・
malasiaca;e,f,A macula,・Ia. - a,c,e,males;b,d,f,females.
Ryukyus,andMessrs.MasaakiKIMURA,ToruMATSUMURAandMaSaShiSUGIMOToof
Okjnawaprefecturefortheirinvaluablehelpinvariousways.
DistributionoftheAnoplophoraSpeciesinOkinawaIsland
AnoplophoraostlimaM(FAIRMAIRE,1895)
(Tablet,Figs.1a-b,2)
Thisspecieswasoriginally described from Amami-oshima Island and is dis-
trjbuted in Amami-oshima Is., 0kinoerabu-jima Is., Ukejima Is. (new reCO「d),
TokunoshjmaIsandOkinawaIs.oftheRyukyus.However,Ineversawanyspecimens
286 NobuoOHBAYASH]
Table 1. RecordsofAnop1opho1・aoshimanainOkinawaIsland
Number Locality Date Collector Infestedplant
3 1 Onna-son,Yamada 6-VIi-l999 M.KIMURA So1/1,na/加A,ll,ensls
,
3e,49 Onna-son,Yamada 1-VI-2000 N. 0HBAYASHI Sell加1a11lllfzle,Isis
Many Kin-oho,Kin 8-VI-2000 S.INADA Sell加a/Ill加ｽ ens1
1 Nago-shi,Yofuke 3-VI-1999 S.INADA
2 Nago-shi,Isagawa 27-V-1999 SAKASHITA
1(5 Nago-shi,Kouki 1-VI-2000 M.SUGIMOT0
Many Nago-shi,HanejiRiver 2~5-VI-2000 N.0HBAYASHl AinusspandMe/iaa eda,・ac11
Figs. 2-5. ModeoflifeofAnop1opho,・aspecies. - 2,A.os;linla,IaontheleafofAlnussp;3,A.,nalas1-_
acaontheleafofCitrusdep・;ossa;4-5,A.,tlacula,・IaonthetrunkofMe/laaeda,・ach.
An〔)p1ophorainOkinawaIsland 287
Collected on Okinawa Island before 1999 when Messrs. Seiji INADA and Masaaki
KIMuRA foundthetrueA. oshimanaspecimensthere.Bythesurveymadein2000, I
wasabletoobservethisspeciesinfestingformaturationbyfeedingonstemsorleaves
ofSchimaliukzuensls(Theaceae),A. inussp. (Betulaceae)orMellaazedarach(Mell_
aceae).Ialsoobservedholeswhichseemedtobetheemergenceholesofthisspecies
onthetrunksofQuercussp.Astheresult,itbecameapparentthatthisspeciesnowin_
habitedratherlimitedareasaroundNagoCityinthemiddleoftheisland.
Anoplophoramalasiaca(THOMSON,1865)
(Table2,Figs.lc-cl,3)
Thespecimensexamined fromOkinawaIslandareidenticalwithA malasiaca
distributedinthemainlandofJapan.TheoldestspecimenwhichIwasabletoexamine
wascollected inNahaCityin1970. In the1970's,A malaslacawasmainlycollected
intheareaaroundNahaCitywhichismainlyoccupiednowbyA macularia.Wecol-
Table 2. RecordsofAnop1ophoramalasiacainOkinawaIsland
Number Locality Date Collector Infestedplant
1 Naha-shi,Shuri 20-VI-1975 TSUTSUMl
1 Naha-shi,Shuri 1-V-1977 T. NAKAMOT0
1 Naha-shi,Shuri 27-V-1975 Y.NoTsU
4 ,2〇十 Naha-shi,Shuri 9-V-1970 S.AZUMA
1 Naha-shi,Sueyoshi 16-VI-1976 M. KINJ0
1 Ginowan-shi,0oyama 17-V-1970 K.MIYAGI
1 Ginowan-shi,Kakazu 30-IV-1995 T.MATSUMURA Citrussp
1 Ginowan-shi,Kakazu 11-V-1971 TukasaKoHAMA
1 Gushikawa-shi,Gushikawa 1-VII-1995 T.MATSUMURA
1 Gushikawa-shi,Enobi 1-VI-2000 M.SUGIMOT0
1 Gushikawa-shi,Kanekadan 1-VI-2000 N.0HBAYASHI Mellaazeda,・ach
1 ,2 (1':-''-' Motobu-cho,Kenken 19-VI-2000 S.INADA Citrusdepressa
1 Nakijin-son,Gogayama 9-VI-l979 M. KINJ0
1 Nakijin-son,Shoshi 18-VI-1995 T.MATSUMURA
1 Nago-shi 13-V-1980 N. 00BA
1 Nago-shi,Yaga 1-V-1999 SAKASHITA
1 ,2(::)''一 Oogimi-son,Uehara 22-VI-1999 S. INADA Citrussp.
ny Oogimi-son,Uehara 2-VI-2000 N. 0HBAYASHI Citrusdepressa
1 Oogimi-son,Takasato 29-VI-1993 N. 0HBAYASHI Mellaazedarach
3 ,4(U-・一・ Oogimi-son,Nerome 2-VI-1995 T.MATSUMURA atrussp.
1 ,3(::)'-・ Oogimi-son,Nerome 18-VI-1995 T. MATSUMURA Citrussp.
ny Oogimi-son,Nerome 2-VI-2000 N. 0HBAYASHl Citrusdepressa
1 Oogimi-son,Nekumachiji 24-VII-1995 T.SASAKI
1 Oogimi-son,Nekumachiji 8-Vm-1995 T.SASAKI
1 Oogimi-son,Nekumachiji l4-VII-1996 T.SASAK1
1 Kunigami-son,Yona 18-VII-1999 TERUYA
1 Kunigami-son,0kuni-rindo 27-V-2000 T.0HASH1
288 NObu0OHBAYASH1
1ectedthisspeciesmainly inthenorthernareaoftheislandwhereorchardsofCitrus
depressa(Rutaceae)wereprevalent.0nlyafewspecimenswerefoundinthemiddleto
southernareasoftheislandfromMellaazed,arach(Meliaceae).
Anopl,ophoramacularia(THOMSON,1865)
(Table3,Figs.1e-f,4,5)
ThisspeciesismainlydistributedinTaiwanthoughitstypelocalityisdesignated
toNorthChinaintheoriginaldescription.In1993,IcollectedthisspeciesatSueyoshi
ParkofNahaCitywhichhadbeentheterritoryofA malasiacainthe1970's.Accord_
ingtotheinvestigationsmadebymyfriends,itisnowwidelyfoundfromthesouthen
endtothemiddleoftheisland. IobservedthatseveraltreesofMeliaazedarachwere
damagedbyheavyinfestationofthisspecies. Itseemedlikelythatthesouthernareas
ofthisislandwereoccupiedbyAmacularia.
Table 3. RecordsofAnop1opho,-a,naculariainOkinawaIsland
Number Locality Date Collector Infestedplant
1:'(:)一 Itoman-shi,Nashiro 30-VII-1999 S IN ADA
1--'(),2〇 Itoman-shi,Maehira 23-V-2000 S' IN ADA
4-:'(':),1- Itoman-shi,Maehira 24-V-2000 S INADA
1c:)・一・ Tamagusuku-son 26-VII-1999 T' S I
M any Chinen-son,Kudeken 5-VI-2000 N 〇 Asj Mellaazedarach
2 Chinen-son,Utaki 30-V-2000 S IN ADA Mellaazedarach
1 Naha-shi,Furushima 29-VI-1999 R
1(f,1(::Y-・ Naha-shi,Tomari 3-VII-1999 M K IMURA
1-(::)一一,1C)'・一 Naha-shi,Tomari 27-VII-1999 M MURA Me/taazeda・,ac
4'''-(:) Naha-shi,Sueyoshi 28-VI-1993 N 〇HBAYAsHI
2('':)・一・ Naha-shi,Sueyoshi 30-VII-1999 M KIMURA
1,-c)一,2+〇 Naha-shi,Maejima VI-1999 H' NAKACHI Mellaazeda,ach
1o Nishihara-cho 1-VII-1999 T SA SAKI
1- Nishihara-cho 27-VII-1999 ? RU YA
14 -,(:)・一・ Nakagusuku-cho 27-VII-l999 T' SA S-
1 Kadena-cho 9-VII-I999 N' KAWAUCHI
6:)一一一一,2(':l,・一 Okinawa-shi,Ikehara 30-VI-1999 SINADA Mellaazeda・,ac
1('':)一一一,1(::l,・一 Okinawa-shi,Goya 29-VI-1999 SIN
1o+ Okinawa-shi,Goya 29-VI-1999 MKIMU RA
2,c)・ Okinawa-shi,Yogi 30-VI-1999 M' MU RA Mellaazedarach
2-:--'),1(),・・' Okinawa-shi,Yogi 2-VII-1999 S IN
35-,()(f-・,,21CI,,(:)・一・ OGuksinhaiwkaaw-sah-si,hKi,oKJaanekadan 330-V-VIII--11999999 SS ININAADADA MMeellllaaaazzeeddaar・,aacch
M一一ny Gushikawa-shi,Kanekadan 1-VI-2000 N 〇 ASHI Mellaazedarach
11-)-()一・一 GIshusikhaiwkaaw-sah-si,hSi,oMnainyasato 3105--VV--21090905 T'S MINf MUM
1--:) Kin-oho,0kukubi 21-VII-1999 Ru
Anop1ophorainOkinawaIsland 289
MatingTrialoftheAnoplophoraspp.
Theresultsareshown in Table4. All thespecies tedon the twigsof Mella
azedarachandmalesmadecontactwithfemalesofotherspecieswiththeexceptionof
acoupleof asmallmaleofA malasiacaandalargefemaleofA.oshimana.Afterthe
contact,theymountedonfemalesandachievedmating.
Table 4. MatingtlialofAnop1ophoraspp.collectedfromOkinawaIsland(June9-10,2000)
A malasiaca3 A.oshumana3 A macularia,3*
(Nerome) (HanejiRiver) (Chinen)
A malasiaca Mountandmate
A.oshimana Mountandmate Nocontact
A macularia Mountandmate
*Smallspecimen
Discussion
TheresultsdelineatedaboveshowthatA maculariamaybeanewinvaderassoci-
atedwithMellaazedarach,whichiswidelydistributed fromTaiwantoJapan.Though
Fig.6. DistributionalmapoftheAnop1ophoraspeciesinOkinawaIsland
290 Nobu0OHBAYASHI
noAnop1,ophoraspecieswasfoundbyoursurvey fromthenorthernmountainousarea,
inwhichflourishesthetruenatural forest,A.oshimanaseemstobeautochthonousto
thisislandbecausetheyattackseveralwildtrees. 0ntheotherhand,A matasiacahad
oncebeenwidelydistributedintheisland,andpossiblytheywerealsoaninvaderbe-
fore1970s' associatedwithintroductionofSatsumamandarin(Cz'trusunshiu),butnow
ratherrestricteditshabitattonortherncitrusorchardarea.
Thedistributional mapofthethreespecies isshown inFig 5. They appear to
sharetheirhabitats, thoughpartly inhabitingsympatrica11y.Nospecimenpossessing
intermediatecharacterstatesofthethreehadbeenfoundout,butthematingtrialsug-
gestspossibilityoftheirhybridization.IamnowcarryingonaDNAanalysisofthese
Anop1ophoraspeciesincollaborationwithspecialistsofthat field. Itwillclarifythe
originoftheinvadersandalsopossibleexistenceofhybridindividuals.
要 約
大林延夫:沖縄本島におけるゴマダラカミキリ属3種の分布. - 沖縄本島のゴマダラカミ
キリ属には, 従来, オオシマゴマダラカミキリ1種のみが知られていたが, 今回, このほかに
ゴマダラカミキリとタイワンゴマダラカミキリの2種が同所的に分布していることが明らかと
なった. これらの分布状況について, 昨年,現地での観察を行うとともに,過去の標本につい
て調査を行った. このうち,在来種と考えられるオオシマゴマダラカミキリは, 中部の名護市
周辺に分布が極限されていた.一方, ゴマダラカミキリは, 1970年代には那覇市周辺で採集さ
れた標本が散見されたが,現地調査では北部の柑橘栽培地帯でシークワーサーを加害している
ものが多く見られた. タイワンゴマダラカミキリは,南部の知念村から中部の名護市周辺まで
広く分布し, センダンの生木に多数の生息するようすが観察された. この結果から, ゴマダラ
カミキリは1970年代に本土から沖縄に侵入し, さらに1990年代になってタイヮンゴマダラカ
ミキリが南から侵入してきたと考えられた. これらは,島内の各地で同所的に分布していたが,
外見的に雑種と思われる個体はほとんど見いだせなかった. しかし, これらの種を相互にペア
にして飼育すると,大部分の組み合わせでマウントおよび交接が観察され, 野外で雑種が生じ
ている可能性が示唆された.
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