Palaemon debilis Dana, 1852

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 : 521-522

Palaemon debilis Dana, 1852

( Fig. 9 )

Palaemon debilis Dana, 1852: 26 ; Holthuis, 1950: 66, Fig. 13 ; Chace & Bruce, 1993: 40.

Material examined. – 13 males, 11 females, 6 juv., Qinglan Harbor , Hainan Is., muddy sand, 27 Apr.1980 .

Diagnosis. – Rostrum strongly ascendant anteriorly, tapering almost imperceptibly to subapical dorsal tooth, with 6 dorsal teeth on proximal part and 1 subapical tooth, and 3-10 ventral teeth. Antennule with distolateral spine of proximal segment not over-reaching adjacent convex distal margin of segment, free part of shorter ramus of dorsal antennular flagellum approximately equal to fused part. Mandible with 2 segmented palp, with long apical seta.

Distribution. – Previously reported from the Red Sea to South Africa, eastward to Great Barrier Reef, Hawaii, Tuamotu Islands, and Ryukyu Islands. Recorded here for the first time from South China Sea.

Figures

Fig. 9. Palaemon debilis Dana, 1852. a, carapace and rostrum, lateral view; b, antennule; c, mandible; d, 1st pleopod, male.

Fig. 13. Urocaridella antonbruuni (Bruce, 1967). a, carapace and rostrum, lateral view; b, mandible; c, thoracic pleuron 3-8, lateral view, show the pleurobranchiae; d, 3rd maxilliped; e, 1st pereiopod; f, 2nd pereiopod; g, abdomen, lateral view; h, telson and uropod, dorsal view; i, tip of telson, dorsal view.