Leander tenuicornis ( Say, 1818 )

Li, Xinzheng, Bruce, Alexander J. & Manning *, Raymond B., 2004, Some Palaemonid Shrimps (Crustacea: Decapoda) From Northern South China Sea, With Descripitions Of Two New Species, Raffles Bulletin of Zoology 52 (2), pp. 513-553 : 516

Leander tenuicornis ( Say, 1818)

( Fig. 3 )

Palaemon tenuicornis Say, 1818: 249 .

Leander tenuicornis - Holthuis, 1950: 26, Figs. 1 , 2 ; 1952b: 155, pls. 41, 42; Chace & Bruce, 1993: 6; Bruce, 2002c: 80.

Material examined. – 1 male, 2 females (1 ovig), CN 75 -K072B, Dadonghai, Sanya, Hainan Is., intertidal, with algae, coll. X. Ren, 17 Apr.1975 .

Diagnosis. – Rostrum sexually dimorphic, expanded vertically in female. Basal antennular segment straight or concave distally, lateral to 2nd segment; stylocerite distinctly over-reaching midlength of basal antennular segment. Second pereiopods without teeth on opposable margin of fixed finger.

Distribution. – Widespread thoughout most tropical, subtropical and some temperate waters, from Red Sea and South Africa to Japan, Philippines, Indonesia, Caroline Islands, Australia, New Zealand, and the Atlantic Ocean from Newfoundland to Brazil, and Mediterranean. Associated with floating weed in the open sea and with attached plants in shallow water.

Remarks. – This is the first record of the present species from South China Sea. The Falkland Islands record ( Kemp, 1925) has never been verified ( Bruce, 2002c).

Figures

Fig. 3. Leander tenuicornis (Say, 1818). a, carapace and rostrum, lateral view, female; b, same, male; c, antennule.

Fig. 1. Coutierella tonkinensis Sollaud, 1914. a, carapace and rostrum, lateral view; b, mandible; c, 1st maxilliped; d, telson; e, tip of telson.

Fig. 2. Exopalaemon orientis Holthuis, 1950. a, carapace and rostrum, lateral view; b, mandible; c, 1st pereiopod; d, 2nd pereiopod; e, 3rd pereiopod; f, same, dactyl and propodus; g, 5th pereiopod; h, same, dactyl and propodus.