We describe and illustrate two pontoniine shrimps,
Cuapetes grandis
and
Periclimenes ornatus
, for the first time in Korea.
C. grandis
was collected in an artifical reef of Dadae, Geojedo Island by SCUBA diving in 15-20 m depth. This species was found in an oyster within an artificial reef and appeared to be free-living.
P. orna-tus
was collected from Seongsanpo, Jejudo Island by SCUBA diving in 10 m depth. This species had a symbiotic relationship with sea anemone. This record extends their previously known range from southern Japan to the Korean peninsula and the number of known pontoniine species in Korea to four.
INTRODUCTION
The distribution of pontoniid shrimps extends from tropical to subtropical regions. These shrimps are usually in symbiotic relationships with a variety of other marine species, sponges,coelenterates, molluscs, echinoderms, and ascidians (Bruce, 1983). At present two species of Pontoniinae,
Periclimenaeus gorgonidarum
(Balss, 1913) and
Onycocaris callyspongiae
Fujino and Miyake, 1969, have been reported from Korean waters (see The Korean Society of Systematic Zoology, 1997; Koo and Kim, 2003).
Two species of pontoniine shrimps, collected by SCUBA from Geojedo Island and Jejudo Island, were identified as
Cuapetes grandis
(Stimpson, 1860) and
Periclimenes ornatus
Bruce, 1969. These new additions to the shrimp fauna of Korea are briefly described and illustrated in the present study.
Postorbital carapace length is abbreviated as “CL”. It is used as an indication of the size of the specimen and measured from the posterior margin of the orbit to the posterior mid-dorsal margin of the carapace. All specimens were preserved in 95% ethanol. Materials examined in this study are deposit-ed in the second author’s collection of Silla University, Busan.
SYSTEMATIC ACCOUNTS
-
Order Decapoda Latreille, 1803
-
Family Palaemonidae Rafinesque, 1815
-
Subfamily Pontoniinae Kingsley, 1878
-
1*Genus CuapetesClark, 1919
-
2*Cuapetes grandis(Stimpson, 1860) (Figs. 1-3)
Anchistia grandis
Stimpson, 1860: 39.
Periclimenes grandis
: Borradaile, 1898: 382; Bruce, 1976: 6,
fig. 2
; Chace and Bruce, 1993: 112.
Kemponia grandis
: Bruce, 2004: 16; Li et al., 2004: 530.
Cuapetes grandis
: Okuno, 2009: 68 (only list).
Material examined.
1♂ (CL 3.8 mm), 1♀ (CL 5.1 mm), Dadae (Geojedo Island), 22 Oct 2008, Lee SH, by SCUBA diving in 15-20 m depth.
Description.
Integument smooth on lateral areas of carapace and abdomen. Rostrum (
Fig. 1
A-C) reaching slightly beyond level of distal end of antennal scale, rostral formula 2+6/2; dorsal teeth rather subequally spaced, posteriormost tooth somewhat separated from remainder of dorsal rostral series, situated posterior to level of hepatic spine. Carapace (
Fig. 1
A-
Cuapetes grandis ovigerous female (postorbital carapace length 5.1 mm eggs omitted). A Habitus lateral; B Carapace lateral; C Male (postorbital carapace length 3.8 mm) carapace lateral; D Left antennule ventral; E Left scaphocerite dorsal; F Telson dorsal. Scale bars: A-F=1 mm.
C) with supraorbital spine, hepatic spine not noticeably larger than antennal spine, not extending beyond anterior margin of carapace, orbital angle triangular. Abdomen (
Fig.1
A) without compressed dorsal prominence on 3rd somite, 5th somite pointed, 6th somite approximately 1.5 times as long as 5th.Telson (
Fig.1
F) with 2 pairs of dorsolateral spines. Eye (
Fig.1
A) moderately small, cornea well-developed. Antennular peduncle (
Fig.1
D) with 1 distolateral spine on basal segment. Scaphocerite (
Fig.1
E) approximately 4 times as long as width,distolateral tooth distinctly overreaching distal margin of blade. 1st pereopod (
Fig.2
A) overreaching scaphocerite by length of fingers. 2nd pereopod (
Fig.2
B, B′) with fingers
Cuapetes grandis ovigerous female (postorbital carapace length 5.1 mm eggs omitted). A Left 1st pereopod lateral; B Left 2nd pereopod lateral; B′ 2nd pereopod′s distal spine of carpus; C Left 3rd pereopod lateral; D Left 4th pereopod lateral; E Left 5th pereopod lateral. Scale bars: A-E B′= 1 mm.
0.7 times as long as palm; carpus 0.7 times as long as palm, 3.2 times as long as distal width, with distal spine; merus with distinct distal tooth on flexor margin. 3rd-5th pereopods (
Fig.2
C-E) with simple dactyli; flexor margin of propodus with 7 spinules on 3rd pereopod, 8 spinules on 4th pereopod, 5 spinules on 5th pereopod; 5th pereopod not overreaching scaphocerite. Uropod (
Fig.1
F) overreaching extended telson.
Remarks
. The two specimens agree closely with the previous description. Chace and Bruce (1993) described the carpus of the 2nd pereopod was 4 to 5 times longer than the distal width,
Cuapetes grandis ovigerous female (postorbital carapace length 5.1 mm).
but in our specimens it was approximately 3.2 times longer. It is generally accepted that the difference falls within the range of variation for this species. This species was found in an oyster within an artificial reef and appeared to be free-living. It is now the only species within the genus
Cuapetes
in Korea.
Color in life (Fig.3 ).
Yellowish brown bands are on distal parts of the carpus and the propodus and proximal and distal parts of the fingers on the 2nd pereopod.
Distribution.
Red Sea to Mozambique, Japan, Indonesia, Australia (Li and Liu, 2004), and now in Korea.
-
1*Genus PericlimenesCosta, 1844
-
2*Periclimenes ornatusBruce, 1969 (Figs. 4-6)
Periclimenes ornatus
Bruce, 1969: 266, 1983: 209; Chace and Bruce, 1993: 119; Debelius, 2000: 187; Minemizu, 2000: 56; Marin et al., 2005: 212.
Material examined.
1♂ (CL 4.1 mm), 2♀♀ (CL 4.8, 4.9 mm), Seongsanpo (Jejudo Island), 18 Oct 2008, Ko HS, by SCUBA diving in 10 m depth.
Description.
Integument smooth on lateral areas of carapace and abdomen. Rostrum (
Fig.4
A-C) not overreaching scapho-cerite, horizontal, rostral formula 0+6-7/1, posteriormost tooth not isolated from remainder of dorsal rostral series, situated slightly posterior to level of orbital margin, anterior to hepatic spine. Carapace (
Fig.4
A-C) without supraorbital or postorbital tooth, hepatic spine not noticeably larger than antennal spine, arising posteriorly and slightly ventrally to level of latter, not extending beyond anterior margin of cara-pace, orbital angle acute. Abdomen (
Fig.4
A) without com-pressed dorsal prominence on 3rd somite, 6th somite approx-imately 1.5 times as long as 5th. Telson (
Fig.4
F) with 2 pairs of well-developed dorsal spines anterior to posterior margin, at approxima-tely 0.3 and 0.6 of length. Eye (
Fig.4
A) with cornea hemispherical. Antennular peduncle (
Fig.4
D) with 1 distolateral tooth on basal segment. Scaphocerite (
Fig.4
E) approximately 2.5 times as long as width, lateral margin stra-ight,distolateral tooth not exceeding distal margin of blade. 1st pereopod (
Fig.5
A) with fingers subspatulate, cutting edges entire. 2nd pereopods (
Fig.5
B) similar, subequal, with fingers approximately 0.5 times as long as palm, carpus approxima-tely 0.3 times as long as palm, approximately l.7 times longer than width, without distal spines, merus without distal tooth on flexor margin. 3rd pereopod (
Fig.5
C, C′) with dactyl not subdistally truncate, without denticulate lobe on flexor mar-gin, simple, not biunguiculate, flexor margin concave, propo-dus with small distoventral spine only, not segmented. 4th-5th pereopods (
Fig.5
D, D′, E) similar to 3rd pereopod, pro-podus without small distoventral spine. Uropod (
Fig.4
F) broad, exceeding tip of telson.
Remarks
. Chace and Bruce (1993) described the scaphocerite was 2.5 times longer than the width, but in these specimens
Periclimenes ornatus male (postorbital carapace length 4.1 mm). A Habitus lateral; B Male carapace lateral; C Female (postorbital carapace length 4.8 mm) carapace lateral; D Right antennule ventral; E Right scaphocerite dorsal; F Telson dorsal. Scale bars: A-F=1 mm.
Periclimenes ornatus male (postorbital carapace length 4.1 mm). A Left 1st pereopod lateral; B Left 2nd pereopod lateral; C Right 3rd pereopod lateral; C′ Dactyl of 3rd pereopod lateral; D Right 4th pereopod lateral; D′ Dactyl of 4th pereopod lateral; E Left 5th pereopod lateral. Scale bars: A-E=1 mm C′ D′= 0.1 mm.
it was 2.7 times longer. It is generally accepted that the dif-ference falls within the range of variation for this species. Omori et al. (1994) reported that this species had a symbiotic relationship with sea anemone such as
Parasicyonis
sp., how-ever, our specimens were associated with the sea anemone
Entacmaea actinostoloides.
It is now the only species within the genus
Periclimenes
in Korea.
Color in life (Fig.6 ).
Body is transparent. Scaphocerite, pere-opods and uropods are violet spotted.
Distribution.
Red Sea, Kenya, Japan, Hong Kong, Indonesia
Periclimenes ornatus. A Live shrimp; B Shrimp associ-atedwith sea anemone Entacmaea actinostoloides.
(Marin et al., 2005), and now in Korea.
Acknowledgements
This work was supported by “The Survey of Korean Indige-nous Species” from National Institute of Biological Resour-ces (NIBR) of Ministry of Environment of Korea.
Bruce AJ
1969
Preliminary descriptions of sixteen new species of the genus Periclimenes Costa 1844 (Crustacea Decapoda Natantia Pontoniinae).
Zoologische Mededelingen
43
253 -
278
Bruce AJ
1976
A report on a small collection of shrimps from the Kenya National Marine Parks at Malindi with notes on selected species.
Zoologische Verhandelingen Uitgegeven door het Rijksmuseum van Natuurlijke Historiete Leiden
145
1 -
72
Bruce AJ
1983
The pontoniine shrimp fauna of Australia.
Memoirs of the Australia Museum
18
195 -
218
Bruce AJ
2004
A partial revision of the genus Periclimenes Costa 1884 (Crustacea: Decapoda: Palaemonidae).
Zootaxa
582
1 -
26
Chace FA Jr
,
Bruce AJ
1993
The caridean shrimps (Crustacea: Decapoda) of the Albatross Philippine Expedition 1907-1910 Part 6: Superfamily Palaemonoidea).
SmithsonianContributions to Zoology
543
1 -
152
Debelius H
2000
Crustacea guide of the world: shrimps crabs lobsters mantis shrimps amphipods.
IKAN Unterwasserar-chiv
Frankfurt
1 -
321
Koo HY
,
Kim W
2003
First report of palaemonid shrimp Onycocaris callyspongiae (Decapoda: Caridea: Palaemoni-dae) from Korea.
Korean Journal of Systematic Zoology
19
251 -
255
Li X
,
Bruce AJ
,
Manning RB
2004
Some palaemonid shrimps (Crustacea: Decapoda) from northern South China Sea with descriptions of two new species.
The Raffles Bulletinof Zoology
52
513 -
553
Li X
,
Liu JY
2004
Report of pontoniinae shrimps (Crustacea: Decapoda) collected by the Joint Chinese-German marinebiology expeditions to Hainan Island South China Sea. III. Periclimenes.
Chinese Journal of Oceanology and Limno-logy
22
89 -
100
DOI : 10.1007/BF02842805
Marin IN
,
Britayev TA
,
Anker A
2005
Pontoniine shrimps associated with cnidarians: new records and list of speciesfrom coastal waters of Viet Nam.
Arthropoda Selecta
13
199 -
218
Minemizu R
2000
Marine decapod and stomatopod crustaceansmainly from Japan.
Bun’ichi Sogo Publishing Co.
Tokyo
1 -
344
Okuno J
2009
Cuapetes Clark 1919 a senior synonym of Kemponia Bruce 2004 (Crustacea: Decapoda: Palaemonidae).
Zootaxa
2028
67 -
68
Omori K
,
Yanagisawa Y
,
Hori N
1994
Life history of the cari-dean shrimp Periclimenes ornatus Bruce associated with a sea anemone in Southwest Japan.
Journal of Crustacean Bio-logy
14
132 -
145
DOI : 10.2307/1549060
Stimpson W
1860
Prodromus descriptionis animalium everte-bratorum quae in Expeditione ad Oceanum Pacificum Septentrionalem a Republica Federata missa Cadwaladaro Ringgold et Johanne Rodgers Ducibus observavit et descrip-sit. Pars VIII.
Proceedings of the Academyof Natural Sciences of Philadelphia
12
22 -
47
The Korean Society of Systematic Zoology
1997
List of ani-mals in Korea (excluding insects).
Academy Publishing Co.
Seoul
1 -
489