Toyama Science Museum Repository

布村, 昇

ヌノムラ, ノボル

99D4602C-7ED5-4094-AD61-C91F6A362A54

Nunomura, Noboru

DA06822727

0000-0002-9249-038X

BulletinoftheToyamaScienceMuseumNo・1pp.31-35;(1979;
Mesα〃蛾I〃｡α〃d"α加ensis,aNewAnthurid
IsopodfromMiyakojimaIsland,RyukyuIslands,Japan
NoboruNunomura
ToyamaScienceMuseum
琉球列島宮古島から採集されたウミナナフシの一新種（甲殻類，等脚目）
布村昇
富山市科学文化センター
琉球列島宮古島狩俣から採集されたウミナナフシを新種Mesanthuγα加iya々og刀SIS
（和名モヨウウ今ミナナフシ）として記載した。本種はMesα灯加"γαPα"cidehsMenzies
andGlynnに最も似るが(1)第7胸節前節が長いこと,(2)背面とくに頭節および腹
節の模様，（3）両触角の形態などによって区別される。なお本種はわが国における
Mesα加地γα属の2番めの種である。
DuringasurveytriptotheRyukyuIslandsmadeintheearlysummer,1975,asmall
butbeautifulanthuridisopodspecimenwascollectedbymyfriend,Mr.Teruaki
Nishikawa,andhandedovertomeforstudy.Atcloserexaminations,itprovedto
representanewspeciesofthegenusMesα〃〃1脚γα.AsfarasIamaware,10specieshave
hithertobeenrecordedasvalidforthegenusfromvariouspartsoftheworld,but
Mesam〃〃γα刀唱γodorsα〃sNunomurahasbeentheonlyspeciesrecordedinJapan.The
abovespecimen,preservedinalcohol,wasdissectedandexaminedinglycerol.AUthe
figuresweredrawnbyusingcameralucida.
Beforegoingfurther,1wishtoexpressmysinceregratitudetoDr.SaburoNishimura
oftheKyotoUniversityforreadingthemanuscript,toMr.TeruakiNishikawaoftheSeto
MarineBiologicalLaboratoryforthedonationofthepreciousspecimen,andtoMr.
YasuhiroNakajimaoftheKyotoUniversityforhiskindnesstosupplymewithacopyof
F.E.Beddard'spaperwhichwasindespensableforthepresentstudy.
Mesα〃t〃J"．α”"α加ensis,n．sp.
(Japanesename;Moyouminanafushi)
(Textfigures1and2)
〃α”γialexa加加ed:1早(holotype,5.5mminbodylength),from3mdeep,onarocknear
acoralreef,Karimata,HiraraCity,MiyakojimaIsland,RyukyuIslands,coll.Teruaki
Nishikawa,June28,1975.TypespecimenisdepositedattheToyamaScienceMuseum,(Or
-101).Unfortunatelymalespecimenhasnotbeencollected.
*ContributionsfromtheToyamaScienceMLIseum，No．2
:-!l
NoboruNunomura
Description:Bodyslenderandabout13timesaslongaswideexceptbothantennae
Bodycolorwhitewithblackpigmentsbetweeneyesandscatteredpigmentsbehindit;
eachperaeonalsomitewithmarginalpigmentsofhexagonalarrangementandvariously
shapedpigmentsinit;pleonwitharoof-shapedandsomeirregularlyshapedpigments;
telsonalsoirregularlypigmented.Endopodofuropodpartlypigmented.
、
〆
一
芦
幸
Ｐ
一
津
‐
／
ｒ
シ
〆
識
一身制
州
芦一
函
溌
剛 G
|’A
Fig.I.ﾊ化sα"thⅨγα沈むﾉα々 og"SIS,n.sp.
A!Anteriorpartofbodyindorsalview,B!Posteriorpartofthesame
CIFirstantenna,D:Secondantenna,E;Mandible,F:Firstmaxilla',
G:Maxilliped(A-G:holotypefemale)
32
AnewspeciesofMesanthurafromル〃yα々 o/〃"αノsiα"．
Rostralprojectionbeyondanterolateralanglesofcephalon・Thethreefrontalangles
areallrounded.Eyesmediocrewithabout20ocelli・Peraeonalsomitesnotpitted.
Demarcationofpleonalsomitesnotvisible・Endopodofuropodextendedasbackwardas
thetelson.
Firstantennacomposedoffoursegmentsinfemale;firstsegmentbigandoblong;
secondsegmentshorterthanthefirstbyaboutthree-fifths;thirdsegmentshorterthan
thesecondbyaboutone-fourth;terminalsegmentshorterthanthethirdbyone-fourth
andequippedwithfivesetaeatthetip･Secondantennacomposedof10segmentsand
longerthanthefirstinfemale;secondsegmentbigandgrooved;distaltwosegments
small
雫装
C
－ － － －
"/'1，
Fig．2．Mesα〃〃1脚rα〃liyakoensis,n.sp.
A-C:Peraeopods1－Ⅲ,D:peraeopodVI,E:PleopodI,F:Telson,
G:Exopodofuropod,H:Endopodofuropod(A-H:holotypefemale)
q'．
』匙ノ
～
NoboruNunomura
Mandiblewithathree-segmentedpalp,terminalsegmentwithninesetaeattheinner
distalpart;incisorrepresentsalargeprojectionandafewofsmallerprojections;cutting
flangewithfiveteeth;molarprocessrepresentsalowknob.Firstmaxillawithaboutone
largeandthreesmallapicalteeth.Maxillipedwithfourfreesegments;firstsegment
biggestandoblong;secondsegmentshortwithashortsetaatdistalpart;andasimple
andthreeplumosesetaeatthetip.
Peraeopod1subchelate;basistriangular;ischiumrectangular;merusshort;carpus
triangular;propodusbigwithaprocessandseveralsetaeoninnermargin;dactyluswith
aclaw,alongnarrowspine,threeshorterspinesandthreeprocesses.PeraeopodsI－Ⅶ
arewalkinglegsandsimilarinshapetooneanother;basisandischiumoblong;merus
somewhatlongwithtwoorthreelongsetaeandmanyfinehairs;carpusalsotriangular
withseveralsetaeandmanyfinehairs;propodusoblong;dactyluswithaclaw.
Pleopodsinfemalearenotmodified・Exopodofuropodegg-shapedwithrather
sinuatemargin.Endopodofuropodconsistsofrectangularbasalsegmentwithaseta,and
terminalsegmentwithafewofplumosesetaeandaboutadozensimplelongsetae.
Telsonlanceolatewithapairofroundstatocystsatbasalpart,andwithtwolongsetae
andseveralshortsetaeatthetip.
Re碗αγks:ThepresentnewspeciesseemstobemostcloselyalliedtoMesα〃thuγα
pacidensMenziesandGlynnfromPuertoRico.Buttheformerdiffersfromthelatterby
thefollowingpoints;(1)longerpropodusofperaeopodVII.(2)pigmentpatterns,
especiallyoncephalonandpleon,(3)shapeofbothantennae,and(4)lessslenderbody.
References
BARNARD,K.H.1914.ContributionstothecrustaceanfaunaofSouthAfrica3.Additionsto
themarineIsopoda,withnotesonsomepreviouslyimcompletelyknownspecies.
Ann・SouthAfr.Mus.,10;325a-442,
1925.ArevisionofthefamilyAnthuridae(CrustaceaIsopoda),withremarkson
certainmorphologicalpeculiarities.J.Linn.Soc.Zool．.36;109-160.
Beddard,F.E.1886.ReportontheIsopoda.SecondPart.ChallengerReportsxvii;143-
145.
Haswell,W､1881.OnsomenewAustralianmarineIsopoda.Proc.Linn.Soc．N.S、W.v:
476-481.
1855.ArevisionoftheAustralianIsopoda,ノbid.iv;1011-1013.
KlRTISINGHE,B.SC.P、1931.NoteonanIsopod{Mesa如加〃γα〃zac〃/ata)newtotheFauna
ofCeylon.SpoliaZeylonica,16;129-130.
Menzies,R.J.andJ.L.Barnard1959.MarineIsopodaoncoastalshelfbottomsof
SouthernCalifornia:Systematicsandecology.Pac.Nat.1(11-12):3-35.
Menzies,R.J.andP.W.Glynn1968.ThecommonMarineIsopodCrustaceaofPuerto
Rî o.AHandbookforMarineBiologists.StudiesontheFaunaofCuracaoand
34
Anewsﾒ>eciesol､MesanthurafromMiya々 ojか"α/siα〃d
■
CaribbeanIslands;104:1-133.
Miller,A.andR.J.Menzies1952.TheIsopodCrustaceaoftheHawaiianIslands,I.
SuperfamilyFlabellifera,familyAnthurudae．Occ.Pap.BerniceP.BishopMus.
21(1):1-15.
Nunomura,N.1977.MarineIsopodafromAmakusa,Kyushu(1).Publ.AmakusaMar.Biol.
Lab.,4(2):71-90,
Stimpson,W.1855．DescriptionsofsomenewmarineInvertebrata・Proc.Ac.Nat･Sci.
Philad.vii:392-393.(Notseen).
35


English

琉球列島宮古島から採集されたウミナナフシの一新種

BulletinoftheToyamaScienceMuseumNo.lpp､37-40;(1979!
Ligia加陀mensis,aNewIsopodCrustacean
＊
fromHaha-jima,BoninIslands,Japan
NoboruNUNOMURA
ToyamaScienceMuseum
小笠原諸島母島から発見されたフナムシの一新種（甲殻類等脚目；
布村昇
富山市科学文化センター
小笠原諸島母島から発見されたフナムシを新種〃giabo刀加ensis(和名オガサワラ
フナムシ）として記載した。本種はわが国の海岸に普通にみられるLigiaexotic運
Rouxとは(1)雄の第一胸肢前節の突起がないこと.(2)第2触角の鞭数が少ないこと．
（3）雄第2腹肢の形態（4）顎脚の形態，（5）尾節の形態などによって区別される。き
た本種と最も似ているLigiabeγ陀加si(Dollfus)とは(1)第2触角の鞭数が少ないこ
と（2）尾肢が短いことなどによって区別される。
Hitherto,onlytwospeciesofthegenusLigia(FamilyLigiidae)hasbeenrecognized
validintheisopodfaunaofJapan.InApril1973,Dr.TatsunoriltdoftheHokkaidoaSVal OlnL elsopouldullu lJdpdll、All八LﾉluLこﾉ1J，Lﾉｭ・人uLJいﾕﾑ､-'4ユムー、”、-/ムー～一、-毎一一一一一一一
UniversitymadealittlecollectionofLigiaatHaha-jima,BoninIslands(Ogasawara
Islands),duringhissurveyoftheinterstitialfaunaoftheisland.Throughhiskindness,
thesespecimensweresenttomeforstudy,andatcloserexaminations,theyprovedto
representanewspecies.Thespecimens,preservedinalcohol,weredissectedand
examinedinglycerol.Allthefiguresweredrawnbyusingcameralucidaorshadow
graph.
Beforegoingfurther,1wouldliketoexpressmysinceregratitudetoDr.S.
NishimuraoftheKyotoUniversityforreadingthemanuscript,toDr.T.Itoforhis
kindnessingivingmetheopportunitytostudythepresentinterestingspecimens,andto
Dr.T.E.BowmanoftheSmithonianInstitutionforhiskindnesstosupplymewitha
copyofDollfuss'paperwhichwasindespensableforthepresentstudy.
Ligm加肥j〃ensis,n.sp.
(Japanesename:Ogasawarafunamushi)
(Textfigures,1-3)
Materialexa加加ed:2tt(ltallotype,8.8mminbodylength,1$paratype,
bodylength)and6早早(1早holotype,11.0mminbodylength,5早早paratypes
mminbodylength),mountainpathofOki-mura,Haha-jima,BoninIslands,coll.
11.0mmin
8.6～12.1
Tatsunori
器ContributionsfromtheTovamaScienceMuseumNo、3
Ｑ
Ｊ
NoboruNunomura
ITO.Apr.12,1973.Typespecimensaredepositedasfollows:holotype(Or-102),allotype
(Or-103)and3paratypes(Cr-104～106)attheToyamaScienceMuseumand3paratypes
(OMNH-Ar-1768～1770)attheOsakaMuseumofNaturalHistory.
〃αb〃αt:Specimenswerecollectedonthepathofca・100mabovesealevel.Soilis
reddishandlateritic,butmoderatelywet.Nearthecollectingpoint,therecanbeeseen
Leucae〃αglα〃caandothertrees,butundergrowshispoorlydeveloped.
Descγ妙"on:Bodysurfacerathersmoothbutwithminutegranulesverysparselyall
over･Bodycolorbrowninalcohol.Eyesbigandreniformwithmorethan600ocelli.
Firstantennavestigialandcomposedofthreesegments;firstsegmentstoutwithtwo
setaeandmanyhairs;secondsegmentoblongwithmanyhairs;terminalsegmentsmall
andsemicircular.Secondantennalongerthanthethoracicsegments;firstthreesegments
shortandrectangular;fourthandfifthsegmentslongwithmanysmallspines;flagellum
with22segments.
Rightmandiblewithastrongbiting
tooth;lacinamobilisslender.not
chitinizedandwithfourteethatthetip;
10hairysetaebetweenbitingtoothand
molarprocess.Leftmandiblewithtwo
strongteeth;lacinamobilischitinized
withthreeheads;aboutsevenhairysetae
betweenbitingteethandmolarprocess.
Firstmaxillawithtwolobes;outerlobe
withaboutsixcurvedteethandtwoor
threerecurvedteethbearingsmallspines;
innerlobesomewhatshorterthanouter
lobeandwiththreehairybristles.Second
maxilladividedintotwolappets.
Maxillipedwithfive-segmentedpalp;
enditeextendingbeyondthedistalendof
thirdsegmentbutnotreachingthefourth
segmentandwithmanyhairsandnineto
tenstoutandshortspinesatthetip;
exopoditesmall.
Alltheperaeopodsare.almost
similarinshapeinbothsexes,butthe
sizegraduallyincreasesfromtheanterior
legtotheposteriorone;coxavery
minute;basisoblongwithtwotoadozen
setae;ischiumoblongwitharelatively
一コ、
、
哩
蕊
『：
Ｉ
ｊ
Ｉ
I
Fig.1.Ligiaboﾉ加刀2ﾉzsJs，n．sp
Dorsalviewofholotypefemale.
〆）C
Oe
AnewspeciesofLigiafroﾉ〃βo〃伽islα〃．
bigsetaatoutercorner;merusoblongwithfourtotensetaeat
oblongwithfivetoeightsetaeatinnermarginandoneor
corner;propoduslongwiththreetosixsetaeoninnermargin;
firstperaeopodinmalewithoutcomborprocessonpropodus.
innermargin;carpusalso
twosetaeatouterdistal
dactyluswithbifidclaw;
哩処、
､、員妻』誕謬
Ｊ
Fig.2．〃giabo〃伽g〃SIS，n．sp．A:Firstantenna,B.'Secondantenna,C!Left
mandible.D!Rightmandible,E'.Firstmaxilla．F:Secondmaxilla,G:Maxilliped,
H:Penes.I:Stylusofsecondpleopodofmale(A-D,F-G,J:holotypefemale,E!
paratypefemale.H-Kallotypemale).
3き
NoboruNunomura
Penesmediocre,apexweaklysetose.Secondpleopodsinmalearemodified;stylus
long,apicalpartswollenwithaboutsixrowsof25spinules-Uropodwiththreespines
oninnermarginandmanylittlespinesonoutermarginofprotopodite;bothlamilong
butexopoditesomewhatshorterthantheendopodite.Posteriormarginoftelson
triangulatewithbluntmedianprocessandrathersharpaccessoryprocess.
Re碗αγ々 s:Thepresentnewspeciesis
mostcloselyalliedtoLigiabeγ々 insi
(Dollfus)fromHawaii,butdiffersfrom
thelatterbythefollowingpoints;(1)less
numerousflagellarsegmentsofthe
secondantenna,(2)shapeofthefirst
antenna,(3)shorteruropod.and(4)more
bluntlyposterolateralprocessoftelson.
Thepresentnewspeciesisalso
distinguishablefromLigiaexoticaRoux、
thewidelydistributedspeciesinJapan.
bythefollowingpoints:(1)lackof
processonthefirstperaeopodofmale.(2)
lessnumeousflagellarsegmentsofthe
secondantenna.(3)shapeofstylusof
malesecondpleopod,(4)shapeof
maxilliped.and(5)lesssharpposterior
endoftelson.
Fig．3．Ligiabo〃〃22刀SIS，n．sp，
A-G;Firsttoseventhperaeopodsoffemale,
H;Firstperaeopodofmale,I;Telson.(A-G,1;
holotypefemale,H;allotypemale.).
References
Dollfus,A.1900.CrustaceaIsopoda:FaunaHawaiiensis,2:521-526,pt．v・Cambridge.
Jackson.H.G.1922.ARevisionoftheGenusLigia(Fabricius).Proc.Zool.Soc.London,
683－703．
,1938.TerrestrialIsopodsofSouthernPolynesia.Occ・Pap.B.P・BishopMus..
xiv10:167-192.
Richardson.H.1905.MonographontheIsopodofNorthAmerica．U.S.Nat.Mus.Bull.,
54:1-727.
VanName.W.G.1936.TheAmericanLandandFreshwaterIsopodCrustacea.Bull.Amer
Mus.nat.Hist..1-535.
Verhoeff,K.W、1926．IsopodaterrestriavonNeu-CaledonienunddenLoyalty-Inseln:
NovaCaledoniaZool.、4:243-366.
'10


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琉球列島宮古島から採集されたウミナナフシの一新種

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