Korean pandalid shrimps have been known to be composed 9 species in 4 genera (Kim and Kim, 1997; Cha et al., 2001). From the western and southern waters of Jeju Island, Korea, a pandalid species,
Specimens examined have been deposited in the Fisheries Resource Management Division, National Fisheries Research and Development Institute (NFRDI). Postorbital carapace length (CL) was used as the standard length of the specimens for measurements, and the terminology primarily followed Chace (1985).
Family Pandalidae
Genus
(New Korean name:
(New Korean name:
Material examined. Western water of Jeju Island, 33°0.1’N 125°06.2’E, 83 m, bottom otter trawl, March 14, 2002, 1 male (CL 12.0 mm), 1 female (CL 13.7 mm), NFRDI-CR 20111015-1; Southern water of Jeju Island, 32°21.1’N 126°3.7’E, 97 m, bottom otter trawl, March 15, 2002, 2 males (CL 14.2, 15.0 mm), 2 females (CL 14.8, 16.8 mm) NFRDI-CR 20111015-2.
Description. Rostrum (Fig. 1A) longer than carapace length, overreaching antennal scale, somewhat upward distally; dorsal margin armed with 11-14 teeth, including 4 or 5
teeth on carapace posterior to level of orbital margin, posteriormost tooth with distinct basal suture; ventral margin armed with 5-7 teeth. Carapace (Fig. 1A) dorsally carinate nearly to posterior margin; posterior end of dorsomedian carina with small papilla; strong antennal and branchiostegal spines present; lateral carinae not sharp but distinct. Abdomen (Fig. 1B) with dorsomedian carina on all somites; third to fifth somites each with strong posteromedian tooth; pleura of fourth to sixth somites with small tooth posteroventrally; tergum of fourth and fifth somites with numerous tegumental scales. Telson (Fig. 1B) armed with 4 pairs of small dorsolateral spines, posterior pair superimposed above bases of lateral pair of posterior spines, posterior margin acutely triangular, with pair of long, stout, lateral spines and median pair of contiguous spines concealed beneath triangular margin. Eye (Fig. 1A) with papilla on ventromedian surface of eyestalk proximal to cornea. Antennular peduncle (Fig. 1A) falling short of half of antennal scale; stylocerite acute, overreaching basal segment. Antennal scale (Fig. 1A) with distolateral tooth overreaching distal margin of blade. Third maxilliped with epipod and exopod. Pereopods (Fig. 1A) with epipods on first to fourth pairs; second pair subequal and similar, carpus composed of 6 or 7 articles; third pair with dactylus about 2/5 as long as propodus; carpus unarmed or armed with 1 or 2 small spines, merus with 11-16 small spines, ischium with 1 small spine; fourth pair more slender than third pair, carpus with 1 small spine, merus with 9-11 small spines, ischium with 1 or 2 small spines; fifth pair more slender than fourth pair, carpus with 1 small spine, merus with 7 or 8 small spines, ischium without spine. Appendix interna on second pleopod (Fig. 1C) broad distally; appendix masculina armed with more than 20 long spines on anteromesial and distal margins.
Coloration. Milky brown or light brown in base color scattered with red or pink small spots; rostrum somewhat transparent; thoracic appendages red (Fig. 2).
Distribution. Red Sea to Indonesia, South China Sea, Philippines and Japan; 14-393 m (Li and Komai, 2003) and Korea (present study). Western and southern waters of Jeju Island from 83 to 97 m in this study.
Size. Maximum CL 18.1 mm in female (Li and Komai, 2003).
Remarks.The genus