Periclimenes sinensis Bruce, 1969a

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 : 547

Periclimenes sinensis Bruce, 1969a

( Fig. 32 )

Periclimenes sinensis Bruce, 1969a: 270 ; 1982a: 255, Figs. 13 , 14 ; 2003: 242; Müller, 1993: 109; Li, 2000: 236, Fig. 315.

Periclimenes (Periclimenes) setoensis Fujino & Miyake, 1969: 149 , Figs. 4 , 5 .

Material examined. – 1 male, CN Q67 B-19, [19 30’N, 108 E], 53.5m, sandy stone, BT, coll. Fengshan Xu, 18 Apr.1959 ; 1 female, CN K246 B-35, Beibu Bay, [18 N, 107 30’E], 19m, muddy sand, AT, coll. Shoupeng Shen, 14 Jul.1960 ; 1 ovig female, CN X243 B-77B, Beibu Bay, [19 50’N, 107 30’E], 48m, with Umbellulifera sp. , AT, coll. Zhican Tang, 21 Aug.1962 ; 1 male, 1 ovig female, CN R183-42 , Beibu Bay, [20 00’N, 107 30’E], 33.5m, crushed shells sand, AT, coll. Fuzeng Sun, 13 Apr.1960 ; 1 male, CN R45 A-3, [18 15’N, 108 45’E], 39m, sandy mud, AT, coll. Zhengang Fan, 16 Jul.1959 .

Diagnosis. – Rostrum not exceeding distal end of scaphocerite, with 1 + 8-10/2 teeth, posteriormost dorsal tooth not isolated from rest and anterior to level of hepatic spine. Carapace without supraorbital or postorbital spine, hepatic spine not distinctly larger than antennal spine, arising posteroventral to latter, orbital angle bluntly triangular, not ovate. Scaphocerite with lateral margin straight, distolateral tooth not reaching as far as distal margin of lamella. Fourth thoracic sternite without median process. Second pereiopods subequal and similar, without distoventral tooth on merus, carpus about 0.75 as long as palm, unarmed distally; fingers about as long as palm. Ambulatory pereiopods with dactyl biunguiculate; propodus with spinules on flexor margin.

Distribution. – Previously reported from Hong Kong, Japan, Philippines and Australia.

Remarks. – The samples agree mostly with the original descriptions and illustrations of Bruce (1982), with some differences from the type material of the species. In particular, the posterior rostral teeth do not appear to be articulated, at most with an obscure suture at the base of the most posterior 1 or 2 teeth; the carpus of first pereiopod is distinctly shorter than the chela and relatively robust, and the fingers of second pereiopods are distinctly shorter than the palm, rather than subequal, the cutting edges with 2 blunt teeth on 0.4 of the proximal length in the fixed and 0.3 of proximal length in the dactyl. However, in all other features they fit those of P. sinensis very well. The differences may well fall within the range of variation of this species, which is as yet not known.

Figures

Fig. 32. Periclimenes sinensis Bruce, 1969. a, anterior region of carapace and rostrum, lateral view; b, right 1st pereiopod; c, right 2nd pereiopod; d, same, fingers.

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.

Fig. 14. Urocaridella urocaridella (Holthuis, 1950). a, carapace and rostrum, lateral view; b, 2nd dorsal tooth of rostrum; c, mandible; d, 1st pereiopod; e, chela and carpus of 2nd pereiopod.

Fig. 4. Leandrites stenopus Holthuis, 1950. a, carapace and rostrum, lateral view; b, eye; c, antennule; d, scaphocerite; e, telson and uropod, dorsal view; f, tip of telson; g, eggs.

Fig. 5. Leandrites stenopus Holthuis, 1950. a, b, carapace and rostrum, lateral view; c-e, mandible, c, d, right, e, left; f, maxillula; g, maxilla; h, 1st maxilliped; i, 2nd maxilliped; j, 3rd maxilliped.