Three species of flabelliferan isopods (Crustacea) from the East China Sea, including the description of a new species of Syscenus

Three species of flabelliferan isopods

(Crustacea) from the East China Sea, including the description of a new species of Syscenus

journal or

publication title

Bulletin of the Toyama Science Museum

number 3

page range 13‑18

year 1981‑03‑20

URL http://repo.tsm.toyama.toyama.jp/?action=repos

itory̲uri&item̲id=18

B u l l e t i

n fo the T oyama eicS nce Mu se um No .3 p.p 3 - 181 ; (1918 )

Three sieecsp f fonaerflilbeal opodsis )(Crustacea from the East China a,Se i

n c l u d i n

g the onpticriesd f a new o escipes of Syscenus•

N oboru N uNOMURA Toyama icS enc Museum e

東 シ ナ 海 か ら 採 集 さ れ た 有 扇 亜 目 等 脚 類

3

種について

布 村 昇

富 山市科学文化 センター

1987

年

1

月から

3

月にかけて水産庁が束ンナ汁面で行 った底曳きによる採某物のうち大型等脚目 について報告する 。

F a m i

l y C iro landi ea

スナホリムシ科

Bausmnoyht O£nelredeod mtr ann ,

オオグ ソクムシ

F a m i

l y Aeg d aie

グ ソクムン科

S y s c e n u

s ,sucificap sp. ovn .,

オニグソクムシ（新称 ）

F a m i

l y Cymot hoid ae

ウオ ノ工科

M eeni ガa spi . ,

なお，新種

sunecsyS sucificap

(和名：オニグソ クムシ）は本 属の日本近海からの最初の発見で あり ，本属の他の一種

sunecsyS xilefni

I (I -

REGRA )

とは次の点で区 別され る。 すなわち.

(1)

頭部中 央の突起が大きいこと， (2 ) 第四及び第五腹節の背部後縁中央部に鋭い突起がある こと， ( ) 3 腹尾 節後縁が丸いこと .

)4(

腹肢各節の剛毛が少ないこと，

)5(

両触角の節数が少ない こと.

)6(

顎脚の 中央には棘が

2

本しかないことなどである 。

R ece ltn y, throu gh teh urteco y os Pf .for T aiij Kikuchi tfo h e A makusa Marine lcaogiolBi Lab ora tory, Kyushu Uni ve rsit y, I had an onityortupp ot exa min e so m e ireetn t isgn iso pod s

a mple s co ldetcel from eth bottom tfo h e East China a.eS At cl oers exa mination ,s eth y pro ve t

o repre e ns tt rh ee scpe ie bs le ong in g to het sub order arfeilelbaFl ngudiclin a new spsciee . Before going hturf ,re I wish ot ex pr ess m y sieernc gra dutit e to r.D Saburo Nishimura ・fo t

h

e K yo to Univer sit y fro rea din g teh manuscript , to .forP jiiTa Kikuchi fo h e Amakusa t Mar n e Bi licaogoli Lab oratory , K yushu U ni vers t yi, orf giv n g m e a chanci e to exa mine eth sample ,s an d D.r Shuzo Kishida , of eth aieikS R eg iona l Fish eri es Research Lab orrtoa y for c

o l l

e t icn g and so rnit g th e sam l ep and os gnrieff m e teh co ll ec ti on data .

Famil y Cenidairola

Bathynomus doederleni Ortmann, .9481 (

J apa nees nam e : Oogusokumushi)

Noboru NuNOMURA

O cc unerr : ec

Net ,3 5

含含

4.97( - 13.00 m m in body )lehtgn and 3

早早

0.07( - 80.5 m m in body ,)htgnel .naJ 1

4

, .8791 From 52 .

゜

73 7'N6 ,122 85

゜

.35 'E to 52,N'60

゜

.93 221,E'll

゜

.35 065 - 629 m in pthde . Net ,01 1

含

8.77( m m in body )htgnel , .naJ ,32 8791 . From ,N'48.72'62 421

゜

0 .95 'E3 ot 62,N'6

゜

3.72

1 2

4 3

゜

2.05 'E ,608 - 770 m in thdep .

Net ,81 1

早

08( .0 m m in body ,)htgnel ,4.beF 8791 . From 92

゜

8 .93 N2' 721 E'5

゜

9.55 ot 92,N'7

゜

6.93 1

2

7

゜

7 .75,E'5 057 m in .htped

Net ,12 6

含含

(70.6-106 9 m m i. n body )htgnel and 9辛早26( .3-14.30 m m in body )htgnel , F.be 5

, .8791 From 92 N'

゜

l03.2 721 E'2

゜

9.03 ot 92 N'

゜

74.24 ,172 E'9

゜

9.13 246 - 605 m in .htped

Net ,22 3

早早

.4585-.55( m m in body )htgnel , Feb . 5, 1.879 From 9 '22 6 .0,N'0 721

゜

31E'30. ot 2

9 N

゜

'997.2 721

゜

30.8'E8 ni.htped

Net ,52 3

早辛

47( - 111 m m in body ,)htgnel Feb . 6, .8791 From ,N'42.84'82 721 E'0

゜

7.30 ot 8 ' 2 4

9 . 7 8 ' N

, 721 5

゜

4.50 'E ,452 - 404 m in pthde .

Net ,63 1

早

8.401( m m in body ,)htgnel Mar . 2, 8719 . From 6 '42 7 .N, 521

゜

E.73 ot 34'62 .N, 1'52 3

6 . E

, 033 - 356 m in .htped

Net ,74 2

含含

601( - 111 m m in body )htgnel and 2

早早

06( - 8 m m i5 n body )htgnel , Mar. 1 , 1 1

9 7

8 . From 82 ,

゜

N.63 21'721 .E to 43'82 .N 1, 72

゜

9 .E0 . 800 - 901 min .htped

Net ,84 2

含含

201( - 130 m m in body ,)htgnel Mar.11 , 8791 . From 8 '42 3 .N.E4'1271, ot,N.04'82 1

2

7 '1E.2 , 705 - 755 m in thepd .

Net ,94 1

含

821( m m in body ,)htgnel Mar. ,11 8791 . From ,N.44'82 721

゜

E1.0 ot,N.64'62 '721 0

5 .

E , 610 - 604 m in hdept .

Net 0 , 25

含含

0.28( - 90.4 m m i body n )htgnel and 5辛早37( .7 - 95 .3 m m in body )htgnel , Mar.

1 1

, .8791 From 8 '42 2 .N, 721

゜

E.90 ot 8 '42 ,N.6 .E.01'721 005 - 553 m in .htped

Net ,25 4 t

含

301( 2 - 1. 44 .9 m m in body ,)htgnel Mar. 2 , 11 879 . From 82

゜

26,N. E.11'721 , to 2

8 ,

゜

N.52 .E.21'721 30 - 30 55 m m in hptde .

Net ,75 3

含合

6.17( - 18.01 m m in body )htgnel and 2

辛辛

1.36( - 11.21 m m in body ,)htgnel Mar. 6 , 11 789 . From 82

゜

,N.53 E.01'721 ot 82 ,

゜

N.63 11'721 .E , 600 m in .htped

Net ,85 1

合

9.101( m m in body )htgnel and 2

辛早

86( .0 - 11.21 m m in body ,)htgnel Mar. ,61 1

9 7 8

. From 8 '2.54 ,N 721

゜

E.70 ot,N.74'82 721

゜

8 .E .50 03 - 524 min .htped

Net ,95 3

早早

96( - 191 m m in body )htgnel , Mar. 6 , 11 879 . From 82

゜

0 .N5 , 141'72 .E t 2o 8

゜

1.N5 , 1

2

7 '16 .E , 700 - 704 m in .htped

Net 0 , 26

含含

6.19( - 10.11 m m in body ,)htgnel Mar. ,61 8791 . From 82 ,

゜

N.35 E.81'721 ot 8 ' 2 5

5 .N, 1E.91'72 . 802 - 803 m in heptd .

Net ,56 1

含

321( m m in body )htgnel , Mar. ,81 7891 . From 9 '12 ,N.8 E.0'2721 ot,N.91'92 '721 2

3 . E

. 014 - 451 m in .htped

Net ,27 2

早早

19( - 180 m m i body n ,)htlegn Mar. 9 , 11 .879 From ,N.44'92 84'721 .E t 2o,N.24'9 1

2 7 ' 4 9 . E

. 9 5 - 54 01 m in .htped

1 4

Mat erlai examined:

F

l abelfil nare o psisdo nrorf Ea st Cinh a Sae

Family Aegidae

Syscenus suc.ifciap .ps ,v.on (Japane name: es Oni-gu so kumushi)

( F i g u r

e )1

Net 8, 1

辛

1.64( m m in body nel,)thg Jan . 2,2 1978 . From °2617 .14'N , 14°246 .77'E 2ot 6°4.751 'N , 1

2

4 °47 .1'E4 , 910 - 990 min depth .

Net 0 , 11

早

9.73( m m in body leth)ng Jan . 2,3 .8791 From 26°'N.8427 , 1°423.905 'E t 2o 6

゜

7 .23 6,'N 1

2

4

゜

E3'.250 .680 - 770 m in depth .

F i g

. .1s cySS/tne cificap 硲 sp.nov .,

A

.

lasroD view ;

B .

laretaL ;weiv C . Ftsri ;annetna D . Sdonec ant enna ;

. E

;eblindMa .F ndecoS

N obo u N r UNOMURA

N et 16 , 1名.(44 0 mm in body length ), F eb. ,3791 .8 F ro m 30゜N'7.710 ,128

゜

21. 94'E to 29゜4.95 ' N ,3 128゜3.12 9'E .94 - 950 m i9 n dep.ht (holotype) .

Ne t 7,4 1

早

6.93( mm in bo dy length ) M ar. 20, 19 7.8 A t 29 '4.4 N , 128 '03.E . 815 m in thdep . T ype spec im ens are depos it ed a fs o ll ows : holoyt pe (C r-116 ,) adtlu femal e 44 .0 m m lno g and 1 paratype (C1-r ,)26 adtlu e m ale 4f 1.6 mm long at th e T oya ma Scienc Mu seume ; 1 paar - type (OM N H -A-r 5 082 ) adtlu a m ale 3t 6.9 mm lno g at th e O saka Mu se um o Nf luraat Hi stro ;y 1 paar type (NS MT- C r-)6927 ta h e Na tt i onal Sci enc Mu se e um , T oky.o

D ecs

ガ

:noitP B ody elongeta d, nea rl y fo ur tmi se sa long as w id e. B ody co lor dllu ye lowl i

n inalrmof . E yse lack n gi. Ce ph alon w id e and w iht a rta her bi g ro str al pro jec ti on. Epim era o

f

peraeo nal so mit remase rka bl e and in cresa n g pi os terio rl y in siz.e l eP o n abrup tly narrowe r t

h an th e peorae n. F ourth and fhtfi l epo nal so mti se ace h bea rs an ac ut e pocr sse pota s teior m edlai par.t l ePeto lson pelil tica l in shape w ituoht any pro cess on dorsa l margin .

F i

r st ant enn a co mp oes d of 16 egs m ent s f;gal elmlu is not di stni gui shabl e from uluncped ar s

e

g m ent s. Seco nd ant en na about 25. mit se sa long as the fri st; pedun cul e comp oes d of i ve f s

e

g m ent s and fl age umll fo 26 seg m ent.s

Ma nlbid e slend er btu bea rs relat ive ly bi g trh e -se ge m ent ed palp ; coes nd and tdrih gse - m ent s w iht m any seate . Fi rs t ma xill a long w iht i vfe long tee th ta h e tt .pi Second ma x ill a w

i t

h tw o lobe;s out er lobe w iht a toto h at th e t.pi M ax idepill thwi palp comp s eo d of tw o s

e

g m ent s;rif st segme nts q uare is n shae;p termin al sge m ent nairt gul ar and arm ed w iht two hoo ks at th e tip .

F i

r st to tdrih peraeo pods dri etce d forwa d s and shortr ; ba sis obl ong is; c hium irt angural ; m eru s rec tangul ar; ca rup s vrye short; prpoo du s obl ong ; da ctyl us bi g. F ouhtr to seve htn per-a e

o pod s dri c ted ba ckwa re d s and longe r th an th e pr eec nid g trh peee eora po,sd s pece i all y la st two peraeo pods are long ba; s is to pro podu s lno g but dac tyl shortsu .

P

l eo pods not chara cet i stri c in a m ale. U rt op od long ba; s is rec tangul ar; bot lam i lanh c eo - l

a

t e w iht m any short e tsa e on th e m agr n . i

R es:krma A s fa r a I know , the gs e nu s Snecsy 硲 has hhti ert o bee n re prese t ed by a sin n gle spec ie,s S. iefn lix (H A)REGR ni the wo rdl . Th e pr ees nt spec ies is se parated fr om th e kno w n speci es ni h e ft o ll ow in g fae rut :se (1) pro tdur ed ro stra l pro jec tnoi , (2) ac ut e pjor c tei on of th e p

o

s teri or m edlai part s o ff o uhtr and ftfi h pl eo nla o msti ,se )3( round pos teri or m argin of pl e-o telso n, ()4 less num usroe egs m entta ion of both ante nn a,e )(5 less num ore us setea on eac h s

e

g m ent of peoaer pods, an d ()6 onl y two ips nes at the tpi m ax ifo pill ed and s on. o

16

F / a

b fiel/ ernasdoposi from Ea st Cbih a Sea

Family Cymothoidae Meinertia _ps

( F iurg e 2) M elena / examined:

Net ,65 1

早

52( 7 m m i. n body )htngel Mar. 3 , 11 .879 From °2742 .N , 126

゜

06.E ot 7°2,.N45 1

2

6

゜

08.E . 125 m in depth . This specimen si sitepod ed a tt eh Toyama Science Museum )36-1rC( .

F i g

. .2 M eiaitren .ps