Ngankeecaris dardanicola ( Bruce & Okuno, 2006 ) Okuno & Yoshida, 2024

Okuno, Junji & Yoshida, Ryuta, 2024, A new genus, Ngankeecaris (Decapoda, Palaemonidae), with supplementary records of its type species, N. dardanicola (Bruce & Okuno, 2006) from the Ryukyu Islands, Japan, Zootaxa 5476 (1), pp. 342-346 : 344

Ngankeecaris dardanicola ( Bruce & Okuno, 2006) comb. nov.

( Figs. 1 , 2 )

Material examined. CMNH-ZC 1894 , 1 male (holotype of Periclimenes dardanicola ), CL 2.2 mm, 35°01.2'N, 138°49.9'E, Kuryo, Numazu, Suruga Bay , Honshu , depth 21 m, 28 December 2000 , coll. R. Minemizu ; CMNH-ZC 1895 , 1 female (paratype of Periclimenes dardanicola ), CL 3.6 mm, 35°01.2'N, 138°48.8'E, off Enashi, Nishiura, Numazu , Suruga Bay , Honshu , depth 12 m, 13 April 2005, coll. H. Watanabe ; CMNH-ZC 2856 , 1 female, CL 4.3 mm, 26°13.038'N, 127°53.567'E, off Umino Fishing Port, Nakagusuku Bay, Okinawa Island , Ryukyu Islands , gill net, 7 June 2018 , coll. R. Yoshida and Chouei Terukina .

Distribution. Type locality: Numazu, Suruga Bay, Honshu, Japan (see above). Additionally known from Vietnam and Indonesia ( Bruce & Okuno 2006).

Common name. Gouzanze-kakure-ebi (standard Japanese name).

Remarks. Ngankeecaris dardanicola comb. nov. represents the unique dwelling in association with sea anemones attached on gastropod shells occupied by hermit crabs of the genus Dardanus Paul'son, 1875 ( Bruce & Okuno 2006). The specimen from Okinawa ( Fig. 2 ) was picked up on board the Teruyuki-maru, a commercial gillnet fishing vessel. Therefore, the host animals of the present specimen could not be determined.

Ngankeecaris dardanicola comb. nov. is readily distinguished from it congener, N. acanthimera comb. nov., by the following key.

Figures

FIGURE 1. Ngankeecaris dardanicola (Bruce & Okuno, 2006) comb. nov. A, C, CMNH-ZC 2856, ♀, CL 4.3 mm; B, CMNH- ZC 1895, female (paratype of Periclimenes dardanicola), CL 3.6 mm. A, anterior part of carapace with rostrum, lateral; B, fourth and fifth thoracic sternites, ventral; C, right second pereiopod, distal part of merus, carpus and proximal part of palm, ventral.

FIGURE 2. Ngankeecaris dardanicola (Bruce & Okuno, 2006) comb. nov. CMNH-ZC 2856, ♀, CL 4.3 mm. Fresh specimen, lateral (A) and dorsal (B) views. Photographs by R. Yoshida.