Antecaridina lauensis (Edmondson, 1935)

Cai, Y., 2006, Atyid shrimps (Crustacea: Decapoda: Caridea) of the Ryukyu Islands, southern Japan, with descriptions of two new species, Journal of Natural History 40 (38 - 40), pp. 2123-2172 : 2124-2125

Antecaridina lauensis (Edmondson, 1935)

Mesocaris lauensis Edmondson, 1935a, p 13 , fig. 4 [type locality: Namuka and Wangava Island, Lau Archipelago, Fiji]; Edmondson 1935b, p 4.

Antecaridina lauensis: Edmondson 1954, p 368 .

Antecaridina lauensis: Holthuis 1955, p 25 , fig. 8d–f; 1956, p 51; 1963, p 267; 1965, p 4, figs. 2a–r; 1973, p 19; Shokita 1975, p 118; 1979, p 201; 2003, p 249, fig. 17B; 2005a, p 193; 2006a, p 50, pl. 2 (low, right); Shokita and Nishijima 1976, p 71; Suzuki, 1980, p 47; Smith and Williams 1981, p 49; Hayashi 1989d, p 378, fig. 172; Sket, 1997, p 62; Leberer and Cai 2003, p 356; Yoshigou et al. 2003,

p 8.

Material examined

One female, cl 3.4 mm, URB, Doline No. 19 (Cave), Minami Daito Island, coll. K. Kinjo, 18 March 2000; 1 specimen , cl 3.5 mm, ZRC 2004.0562 , Cave Gushiken-Dou , Minami Daito Island, Ryukyu Islands, coll. T. Naruse et al., 3 November 2002; 1 male , cl 3.9 mm, ZRC 2004.0563 , Cave Mizuana , Minami Daito Island, Ryukyu Islands, coll. T. Naruse et al., 3 November 2002 .

Diagnosis

Rostrum sharp, unarmed, reaching to middle of second segment of antennular peduncle. Antennal spine fused with inferior orbital angle. Pterygostomian margin with a spine. Telson normally with two pairs of dorsal spines and its distal margin rounded, with no posteromedian projection. Eyes with cornea strongly reduced, with a small spot of pigment. Posterior end of caridean lobe of first maxilliped truncated, with no long curved setae. Exopods present on all pereiopods, epipods on first four pereiopods. First pereiopod with carpus excavated deeply anteriorly, twice as long as high, slightly longer than merus but shorter than chela; finger as long as palm. Second pereiopod with carpus excavated anteriorly, four times as long as high, longer than merus and chela, finger longer than palm. Third pereiopod with propodus more than 2.5 times as long as dactylus, dactylus ending in two claws, flexor margin with three spines. Fifth pereiopod with propodus more than twice as long as dactylus. Endopod of male first pleopod with an appendix interna at its anterior margin. Appendix interna of male second pereiopod longer than appendix masculina. Uropodal diaeresis with one long spine.

Habitat

Anchialine caves.

Remarks

Antecaridina lauensis is an anchialine species with a wide but disjunct distribution. It has been reported from Lau Islands, ( Edmondson 1935a,b), Europa Island, Madagascar ( Holthuis 1965), Sinai Peninsula, Red Sea ( Holthuis 1963), Hawaii Island ( Holthuis 1973), Solomon Islands ( Smith and Williams, 1981), Philippines ( Sket 1997) and Guam ( Leberer and Cai 2003). In the Ryukyu Islands, it has been recorded from Minami Daito Island ( Shokita 1975, 1979) and Kuroshima Island, Yaeyama Group ( Suzuki 1980).

Distribution

Disjunct distribution in Indo-West Pacific.