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A new species of the genus Lucasioides (Crustacea: Isopoda) from nest material of Mogera imaizumii, Toyama-ken, central Japan

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A new species of the genus Lucasioides

(Crustacea: Isopoda) from nest material of Mogera imaizumii, Toyama‑ken, central Japan

journal or

publication title

Bulletin of the Toyama Science Museum

number 33

page range 33‑37

year 2010‑03‑15

URL http://repo.tsm.toyama.toyama.jp/?action=repos itory̲uri&item̲id=922

(2)

富山市科学博物館研究報告第33号,pp,33‑37;(2010》

ANewSpeciesoftheGenusL"c m〃e$(Crustacea:Isopoda)fmm neStmaterialofM'g α"αjZ""f",Toyama‑ken,centralJapan

NoboruNunomura ToyamaScienceMuseum

l831NishinakanomachiToyama9398084Japan

富山県のアズマモグラの巣材から発見された ハヤシワラジムシの1新種

布 村 昇 富山市科学博物館

939‑8084富山県富山市西中野町1‑8‑3:

横畑泰志氏が富山県東部魚津市三ヶの魚津市ミラージュランドのアズマモグラの巣 材から採取した陸産等脚目を新種L"casjoj昨syokoh" (和名:ヨコハタモグラワラ ジムシ:新称)として記載した。本種は富山県西部のモグラの巣から記録されている L"cas/oj火srQyα"'αe"sjsNunomura,2008と類似するが、(1)第1腹肢外肢の先端付近 に剛毛があること、(2)頭部前面観で上方が低い三角形であること、(3)第3胸節の 剛毛も側縁から遠くにあること、(4)第6胸肢座節に多数の長い剛毛があること、(5)

雄の第2腹肢外肢の内縁に剛毛が無く、外縁に剛毛があることなどによって区別され

等脚類、新種、富山、モグラ、巣材分類学、ヨコハタモグラワラジムシ Isopod,newspecles,nestmaterialofMbgα,taxonomy,

L"c joj昨syokoル α』

キーワーIド Keywords

HithertollspeciesofthegenusL"cjojshavebeenrecorded廿omaovertheworldasvalidSchmalfilss 2003),7speciesfromJapan(Nunomura1987,1991,1992,20002003,2008,2009andtwospecieshavealreadyre corded廿omthenestmaterialofMフgeノ"αinthewestempartofTovamaPrefecture(Nunomura,2008).

RecentlyDrYasuharuYokohataoftheToyamaUniversitycarriedoutanecologicalsurvevonatMirageland UozushiToyamaHecollectedseveralspeclmensoftelTestrialisopodcrustaceansandsenttomeAtthecloserexaml natlonofmine,theyareprovedtorepresentanewspeciesofthegenusL"cjoj火sandldescribeditasL"cjoj火s )'0幼ル" TheholotypeisdepositedatTovamaScienceMuseum(TOYACr‑l9939).

Befbregoingfilrther,IwouldliketoexpressmysmceregratitudetoDr,YasuhamYokohata,Universityof Toyamafbrhiskindnessingivingmeachancetoexamlnesuchinterestlngmaterials.

Orderlsopoda

SuborderOniscidea

FamilyAgnaridae L"caSj たSJC""α in・sP.

(JapanesenameYokohatamogurawarajimushinew

Figs12

*Contributions廿omtheToyamaScienceMuseum,No38i

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NobonlNunomura

Mbre α/exa加加 533(lJholotype,6.Omminbodylengthand433paretypes,4.1〜5.3mminbody length)and7早早(1早allotype,6.3mminbodylength,6早早and3.5〜62mminbodylength)廿omnestmateriai ofamoleMbjajz""SangaUozushiToyamaken0ct2009collYasushiYokohataTypeseriesisdeposited asfbllows:holotype(TOYACr‑l9939),allotype(TOYACr‑l9940)and3paratypes(TOYACr‑l9941〜19942)at TovamaScienceMuseum,3paratypes,(OMNHAr‑7758‑7760)atOsakaMuseumofNamralHistoly,2paratypeg (KMNHIvR506,466〜500,467)atKitakyushuMuseumofNaturalHistoryandHumanHistory,and2paratypeg (NSMTCr‐20959)atNationalMuseumofNamreandScie、Ce,Tokyo

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一一﹀と壬

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0,. 参入 S −1■一./c1−b/ci1

Fig.1.L"c 〃j【たsyOル0" n.sp.

A,DorsalviewぅB,Frontalviewofcephalon;C,Antennuleうり,Antenna;E,Rightmandible;

Maxillula;H,Maxilla;IMaxilliped;J,Penesandmalepleopodl;K,Exopodofthesame;L,

M,Pleopod3ofmale;N,Pleopod4ofmaleラO,Pleopod5;P,ExopodoffemalepleopodlラQ R,Uropod;S,Positionofnodulilateralis(A‑O,R‑S,Holotypemale;P‑Q,Allotypefbmale).

F,Lefimandible;Gシ Malesecondpleopodラ Pleopod2offemale;

34

(4)

AnewL,"c jor〔たsfTomnestmaterialof,Mbgem

Desc"o〃q/版α/e:Body22timesaslongaslongwide(FiglA)Anterolateralangleofcephalonprotruded Posteriormarginofpereonalsomitesl2sinuateColoralmostwhiteslightlypalebrownPereonalsomltesalmostpar alleLPleotelsonwitharoundedtipPositionofnodulilateralisFiglSonpereonalsomites24remotefTomthelateral

border

AntennuleFig.1C)3segmentedterminalsegmentwith7shortaesthetascsondistalmarginAntennaFigD) tenninalflagellarsegment2Otimeslongerthanbasalone

RightmandibleFiglE)parsincisiva3headedlaciniamobilisnotchitinizedandslightly2headedaplumose setaprocessusmolarisrepresentedbyatufiofsetaeLeRmandibleFiglF)parsincisiva3headedlaciniamobilis chitinized3headed3plumosesetae;processusmolarisrepresentedbyatufiofsetaeMaxillulaFlG):innerlobe with2plumosesetaeandasmallacuteprQiection;OuterlobewithlOsimpleteethMaxillaFiglH):relativelynar rowMaxillipedFig.11)enditerectangular,with3spursandsetaeondistalmarg1,;palprelativelynarrow

PereopodlFig2A):basis31timesaslongaswideischiumhalfthelengthofbasis,with9lOsetaeonlnner marglnmerus0.7timesaslongasischiumwithlll2setaeincludingsomebifilrcatedonesonlnnermarglncarpus l7timeslongerthanmeruswithl5l6setaeonlnnermarg1npropodusO8timesaslongasca1puswith4setaeon

lnnermargln・

Pereopod2(Fig2B):basis29timesaslongaswide;ischium65%aslong;asbasis,withlO‑l2setaeonlnner marginand3setaeonoutermarglnmerus0.7timesaslongasischiumwithmorethanl8setaeincludingasbifUr catedoneonlnnermarglnand3setaeatouterdistalangleぅcarpusl4timeslongerthanmerus,Withmorethan33 1ongSetaeincluding3trifUrcatedonespropoduswith81ongerandseveralshorteronesonmnermarginandlOshort

setaeonoutermargln、

Pereopod3(Fig2C):basisa7timesaslongaswide;ischiumhalfthelengthofbasis,with2setaeonoutermar‐

91,merus0.6timesaslongasischiumwithl3l4setaeon1nnermarginandasetaatouterdistalanglecarpusL6 tlmeslongerthanmeruswith2425setaeincludingbifUrcatedortrihlrcatedlongeronesonlnnermargmpropodusO7 tlmesaslongascalpus,with7‑81ongerandseveralshortersetaeonlnnermarglnandl2‑l3setaeonoutermargln

Pereopod4(Fig2D):basis27timesaslongaswideラischiumO、6timesaslongasbasis;merusO6timesas longasischium;calpus1.4timeslongerthanmerus,withl7‑l8setaeonmnermargin,4−5setaeondistalmarglnand l2l3setaeonoutermarglnpropodus1.2timeslongerthanca1puswith9lOsetaeonmnermarginandlOllsetae

onoutermargm、

Pereopod5(Fig2E):basis29timesaslongaswide;ischiumQ6timesaslongasbasis,with2setaeondistal outerarea;merus0.7timesaslongasischium,withl5‑l6setaeonlnnermarglnand2setaeatouterdistalpart;

carpus1.2timeslongerthanmeruswithl4l5setaeincludinglongonespropodusO8timesaslongascarpuswith 7setaeincluding3bifilrcatedonesonlnnermargln

Pereopod6(Fig2FandG):basis3.7timesaslongaswide,withmanylongsetaeonleftsurfaceうischiumO、6 t,mesaslongasbasis;merus0.6timesaslongasischium,with7‑8setaeonlnnermarg1n;caIpus1.6timeslonger thanmerus,withlO‑l2setaeincludingabifUrcatedoneonlnnermargln;propodusaslongascarPus,with7setaeon 1nnermarglnandl3‑l4setaeonoutermargln・

Pereopod7(Fig2H):basis3.4timesaslongaswide;ischiumO6timesaslongasbasisandspreadingtoward thedistalarea,withabout30setaeonmnermarg1nandaboutlOsetaeonoutermargln;merus85%aslongas ischium,withmorethan20setaeonmnermargl、;calpusalittlelongerthanmerus,outermarginraisedroundly,with 9lOsetaeon1nnermargin23setaeonoutermarg1npropoduslltimeslongerthancamuswithlll2setaeon1nner marginandsetaeonoutermargln、

Penes(FiglJ)fUsifbnn,withacutetlp

Pleopodl(FiglJandK):endopodstraightandapicalareabentsoutward,withaserlesofmorethan30 denticlesonapicalareaexopodrectangularextemalmarginslightlysinuatewithavervshallowconcavltyandaseta ondistalmargln

qJ

(5)

NoboruNunomura

Fig.2L〃casj 火SVC"" 、.sP,

A−E,Pereopodsl‑5;F,Pereopod6G:basisandofischiumofthesameintheoppositeside;H,Malepereopod7三 I:Femalepereopod7.(A‑H:Maleholotype;I:Allotypefemale).

Pleopod2(FiglL):endopodslendertowardthetipandslightlyexceedingthetipofexopod;exopodlongand triangular,withmorethanl5shoItsetaeonoutermarginPleopod3(F唱1M):endopodrectangular;exopodtriangul with9setaeonoutermarginPleopod4(FiglN):exopodtriangularwith9setaeonoutermarginPleopod5(F唱里 O):exopodtriangularbutalittlesmallerthantheprecedingones,with6setaeonoutermarginandmanvsmallsetae

onmiddlearea,

Uropod(FiglR):basisrectangular;endopodl4timeslongerthanbasis,withamftoflongsetaeatthetip3 exopodslightlylongerthanendopod,withmanysetaeonlnnermargin,l6‑l7setaeonoutermarginandseveralsetae atthetip

陸加α/e:Roughlysametomaleexceptofsexualcharactersandshapeofpereopod7differs廿omthatofmale Numberofsetaeonoutermarginofexopodofpeopodslessnumerousthanthoseofmale(Fig2Q).

ECOノo副ノ:Thepresentnewspecleswerefbund廿omthenestmaterialinthemnnelofMogerajmajz"加戊,togelher withotherisopods,Exα"o"jsc"scor"jandPo7 "jo a6er,andanant,庇〃α碗o〃"沈む"shj碗αe、

E〃"o/o幻ノ:Thepresentnewspeciesisnamedafterthecollector,Dr・YasuharuYokohata・

Rem肺:ThepresentnewspeciesismostcloselvalliedtoL"cjoj昨sα脚αe"sjsNunomura,2008,butthefbr‑

merlsseparated廿omthelatterinthefbllowringfeatures:(1)presenceofsomesetaeofdistalmarginofmale価r駁 pleopod2triangular廿ontalmarginofcephalon,3remotepositionofsetaeon3rdpereonalsomite,4presenc

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J 。̲'。

(6)

AnewL"c io/〔たshomneStmaterialofMbg a

ofmanylongsetaeonischiumofmalesixthpereopodand5presenceofsetaeonoutermarglnexopodofmalesec

ondpleopod

Re従rences

Nunomura,N・1987SmdiesontheterrestrialisopodcrustaceansinJapanTaxonomyofthefamiliesTrachelipidae

andPorcellionidae.B""、7byα〃αScj.〃iィs・11:1‑76.

NunomuraN1991SmdiesontheterrestrialisopodcrustaceansinJapanFurthersupplementstothetaxonomv

β""、Zhya流α5℃iMjイ&,14:l‑26

NunomuraN2000TerrestrialisopodandamphipodCrustaceansfiomthelmperialPalaceTokyo"?MJmS

M′S Tb勺o,5:79‑97.

Nunomura,N2003.TerrestrialisopodcrustaceansftomsouthemKyushu,SouthemJapanB"".ZbyαaScj.〃,26

2245

Nunomura,N2007Terrestriallsopods廿omHach1olsland,middleJapan.B""7byααSMZs30):1736 Nunomura,N2008TwonewspeciesofthegenusL"cjoisIsopodmmmole'smnnelsofNantoshi,Toyam

middleJapanB"".Tbyα"zaSa. ィs,,31:3‑11.

Nunomura,N2009.TerrestriallsopodCrustaceansfTomDaitolslandsSouthemJapanB""Tb)α"2αSM23275

87

Nunomura,N2010AnewspeclesoftheGenusL"cjojsGnlstaceaIspodafiomAshiuMiyama,Nantanshi Kyoto,CentralJapanB""、7byα脚αS℃瓜M"&33:(inpress).

SchmalhlssH2003.WorldCatalogofterrestrialisopodIsopodsOniscideaS""gα"erBe/".MJ""kS.A65

4:1−341

qJ

参照

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