Plesionika williamsi, Forest, 1963

Ahamed, Ferdous, Cardoso, Irene A., Ahmed, Zoarder F., Hossain, Md. Y. & Ohtomi, Jun, 2017, An overview of the genus Plesionika Bate, 1888 (Decapoda, Caridea, Pandalidae) in Asian waters, Zootaxa 4221 (5), pp. 575-593 : 589

P. williamsi Forest, 1963

Description. Rostrum long, extending far beyond scaphocerite, about 1.5 times as long as carapace, curved downwards upto middle of antennular peduncle and thereafter gradually ascending, armed with 11 dorsal teeth arranged closely on basal crest, proximal 3 or 4 placed behind orbit, first tooth microscopic and movable, next 2 or 3 of smooth, ventral margin serrated with 11–15 teeth spaced more widely than dorsal; all abdominal segements non-carinate; eyes large with distinct ocellus ; 3rd maxillipeds with well developed exopods, surpassing scaphocerite by whole length of utlimate and 1/4 of penultimate segments, ultimate segment shorter than penultimate, exopod reaching about middle of basal article, epipod small and terminating in a sickle-shaped hook and laterally bent spine; 2nd pereopods equal, longer and slender, reaching tip of rostrum, carpus divided into 27– 30 joints, merus slightly more than half, the length of carpus ( Suseelan 1990).

Distribution. Indian Ocean, southwest coast of India, Japan and Taiwan; at depths of 300–455 m ( Suseelan 1990; Komai et al. 2005).