Periclimenes hongkongensis 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 : 545

Periclimenes hongkongensis Bruce, 1969a

Periclimenes hongkongensis Bruce, 1969a: 259 ; 1982a: 247, Figs. 8-10 ; 2003: 234; Müller, 1993: 87; Li, 2000: 191, Fig. 242.

Material examined. – 1 female, CN 54-394 - 5 , Beibu Bay, off Hepu, Guangxi Province, coll. J. Y. Liu, 30 Dec.1954 .

Diagnosis. – Rostrum not exceeding distal end of scaphocerite, with 1 + 12-17 small acute dorsal teeth, posteriormost tooth (epigastric spine) distinctly isolated from rest, posterior to level of hepatic spine, posterior 6-8 teeth appear to be articulated with carapace; ventral margin with 2-4 teeth. Carapace without supraorbital or postorbital spine, hepatic spine more robust than antennal spine, arising at much lower level than latter; inferior orbital angle acute produced. Scaphocerite with lateral margin straight, distolateral tooth not reaching to distal margin of lamella. Fourth thoracic sternite without median process. Second pereiopods slender, markedly unequal, without distoventral tooth on merus, major second pereiopod with carpus short and stout, about 0.45 of palm length, unarmed distally, fingers about 0.45 of the palm length; minor second pereiopod with fingers subequal to palm length, carpus longer than palm length, about 1.25-1.3 times palm length, merus about 1.5 times palm length. Ambulatory pereiopods with dactyl biunguiculate.

Distribution. – Previously reported only from Hong Kong.

Remarks. – The female specimen agrees closely with the original descriptions and illustrations of Bruce (1982a), except for the reduced rostral dentition, 1+12/2, the major second pereiopod is missing and the distal part of telson is damaged.

The rostral dentition for this species is adjusted here from 1+ 13-17/3-4 to 1+ 12-17/2-4.

Figures

Fig.8. Macrobrachium mammillodactylus (Thallwitz, 1892). a, carapace and anterior appendages, lateral view; b, mandible; c, 2nd pereiopod; d, same, chela and carpus; e, telson and uropod.

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