A cymotoid isopod crustacean collected from the sea off Mizuhasi, Toyama City journal or Bulletin of the Toyama Science Museum publication title number 16 page range 7-10 year 1993-03-25 URL http://repo.tsm.toyama.toyama.jp/?action=repos itory_uri&item_id=628 BulletinoftheToyamaScienceML1seumNo,16,pp7−lO(1993) AcymotoidisopodcrustaceancollectedfromtheseaoffMizuhasi,ToyamaCity事 NoboruNunomura TovamaScienceMuseum 富山市水橋沖から採集されたウオノエ科等脚目甲殻類の一新種 布村昇 富山市科学文化センター 富山市水橋沖の富山湾で富山市科学文化センターの宮本望氏によって採集されたウオノ エ類の1種を新種,〃0/〃0⑪'α#”α"2“"sjs(和名:トヤマウオノエ)として記載した。本 種は〃0/ルoCyaPαγU0s"sと類似するが,(1)より大型であること,(2)尾肢の形態,(3)両触角 の形態,(4)尾節板の形態および(5)口器の形態等によって区別される。なお,模式標本は富 山市科学文化センターで保管される(TOYACr-ll527)。また,本研究の一部に水産無脊椎 動物研究所研究補助金の一部を使用した。 Recently,Mr、NozomuMiyamotooftheToyamaScienceMuseumfoundacymothoid specimenfromtheseaoffMizuhashi,ToyamaCity,togetherwiththefishescaughtfromthe seabottom20mindepth,offMizuhashi,ToyamaCity,theSeaofJapan,Thesespecimens werehandedtomeforidentification,Atcloserexaminationofmine,theyprovedto representanewspeciesofthegenus〃“h0q)α・ Beforegoingfurther,IwouldliketoexpressmyslnceregratitudetoMr、Nozomu MivamotooftheToyamaScienceMuseum、 ThisworkwerepartlysupportedbytheaidsofResearchlnstituteofMarinelnverte‐ brates. MOt伽C"αm〃α、αe"SjSn・sP・ Figs、land2 (Japanesename:Toyamauonoe,new) 〃α花γjα/“”"加”;l早(holotype,22.1mminbodylength),hostunkown,20mindepth,o低 Mizuhashi,ToyamaCity,ToyamaPref,theSeaofJapan,coll.,NozomuMiyamoto,Mar12. 1992.Holotype(TOYA−Crll527)isdepositedattheToyamaScienceMuseum・Male unkonwn・ Dgscγゆ"0”qfた加α〃:Bodymoderatelytwistedtooneside,1.9timesaslongaswide *ContributionsfromtheToyamaScienceMuseum,No.132 NobomNunomuTa Colorwhiteinalcohol,CephalonrostrumprotrudedbuttruncatedBodvwidestatper eonltes5a、d6.Rostrumweaklyproduced,eacheyecomposedofabout60ommatidia, Coxaeofpereonltesremarkable.Pleonitesallvisibleindorsalview,Pleotelsonwith indistinctlongitudinaledges;pleonalsegmentsabl-uptlynal-rowerthanpereonltes Antennule(FiglB)9−segmentedAntenna(FiglC)7−segmented Mandible(Fig.1,);palpscarecelyextendingbey()ndincisor・ Maxillula(FiglE)longwith5teethatthetip MaxiⅡa(FiglF)stoutwithl2teethatthetip MaxiⅡiped(Fig.1G)terminalsegmentwith3recul-vedspmes. 〆 /(cid:631)一 く I 念 、 心 、 一一一 、一一 I 一一一 / ノ 一一一 ノ ノ ー 、 、 、 / 1 / 型 1 4一 二室蕊 1 斗 一 6 一 一三一、 / / Fig.1〃0〃z“yα/“!α叩α(WS(n.sD. A、Dorsalview;B,Antennule;C・Ante'ma;DMandible;E・Maxillula;F・Maxilla;G Maxilliped;IIUI・opod(AⅡ:Holotypefemale) Aと、1,"ノ(ノ/(ノ"/“”〔ノcノ'"s/αα'"〃ル'()ノ〃我)vα"MCノハ, Pereopodl(Fig2A);basisstout;ischiumrectangular;mel-ussquare;carpusl-athershort息 propodusstoutandl-athershort;dactyluslongandrecurved・ Pereopods2〜7(Fig2B−E)alittlelargerthanpereopodl;basisstout;ischiumrectangu‐ lar;merusdepressedsquare;cal-pusrathershort;propodusrectangularandI-athershort: dadyluslongandrecurvedsetae Pleopods(Fig2F)arebroadandnotcharcteristici、female 、 Fig.2M()〃2“Ⅷ/0V(")zα”SISn.sp. A、Pereopodl;B・Pereopod2;C・Pereopod5;D、Pereopod6;EPeI。e()p(〕d7;F、P1eopo壷 1(AⅡ:holotypefemale) NoboruNunomura Uropod(Fig.1H);basiselliptical;bothramilanceolateandsubequalinlength. R""α'杓s:Thepresentnewspeciesismostcloselyalliedto〃砿加cyaPαγzノ0s"sBruce whichisdistributedaroundJapanincludingToyamaBay・Buttheformerlsseparatedfrom thelatterinthefollowingfeatures:(1)largerbodysize,(2)shapeofuropod,(3)numbero盲 segmentofbothantennae,(4)shapeofpleotelson,and(5)shapeofmouthpart,Male unkonwn. E””/Qgy:ThespeclesnamereferstoToyamaBay:thetypelocality. References Bruce,N,L、1986.RevisionoftheisopodcrustaceangenusM0"zoCyaCosta,inHope,1851 (Cymothoidae;Flabellifera),parasiticonmarinefishes.J,Nat、Hist20:1089-ll92 Kussakin,0.G.1979.MarineandBrackishlsopodaofcoldandtemperatewatersofthe NorthernHimispherelSuborderFlabellifel-a・AkademyofScience,U,S、S,R, Leningrad・’-470(inRussian). Nunomura,N、1992.Thl-eecymotoidisopodscollectedfromofftheseaoftheBoninlslands Bull,ToyamaSci.Mus,15:35-45. Schiodte,』.C&Meinert,F・'884.SymbolaeadmonographiumCymothoarumCrustaceorum lsopodumfamiliaelV・CymothoidaeTrihll・Cymothoinae、Trib、111.Livonecmae、 NaturhistorskTidsskrift,ser,3.14,223-454,pls、6-18. Shiino,SM、1951.OnthecymothoidisopodaparasiticonJapanesefishes・Bull・JapSoc・ ofSciFisheriesl6:81-89. 1965.IllustratedEncyclopediaofJapan,Hokuryukan,TokyQ Trilles,JP、andRRaibaut,1973.SurlesCymothoidae(Isopoda,Flabellifera)parasitede poissonmarinsdeTunisie,Bull.Mus、nat.。'Hist.,Paris,3esernoll4,Zoologie88:273 -281. Williams,EHJr、andLBWilliamsl983・AnewCymothoidlsopod,G/Osso6血s〃"""畑'” 〃z(1-omitsmouthoftheBallyhoo,f北加か〃α"ゆ〃"s〃"s"た"sfs(Linnaeus)(Exocoetida感 intheCaribbeanSea,Crustaceana;48(2):147-152 l()