Hippolyte ventricosa H. Milne Edwards, 1837

Xu, Peng & Li, Xin-Zheng, 2015, Report on the Hippolytidae Bate (sensu lato) from China seas, Zoological Systematics 40 (2), pp. 107-165 : 110-112

Hippolyte ventricosa H. Milne Edwards, 1837 ( Figs 1 , 36A–C )

Hippolyte ventricosus H. Milne Edwards, 1837: 371 . Type locality: Seas of Asia .

Hippolyte acuta Rathbun, 1906: 912 , fig. 3; Edmondson 1946: 252, fig. 153c.

Hippolyte ventricosa Holthuis, 1947: 16 , 55, figs. 7–9; Hayashi, 1982:192, fig. 6; Chace, 1997: 66.

Material examined. MBM136614 , 2 ♂ (cl 2.27, 3.14 mm), 10 ovig. ♀ (cl 2.78–3.57 mm), 1987-3-12, no. F11-7-29 ; MBM136591 , 1 ♂ (cl 2.43 mm), Dadonghai, Sanya , Hainan, 1997-3-1, no . CJ97 C-82, coll. Xin-Zheng Li ; MBM136520 , 1 ♂ (cl 2.19 mm), Hainan, Sanya, Xiaodonghai , 1997-3-5, no . CJ97 C-239, coll. Xin-Zheng Li ; MBM129572 , 3 ♂ (cl 2.75–3.29 mm), Guangdong, Nanao, Yunao , 1957-4-30, no.57K-065 ; MBM129575 , 23 ♂ (cl 1.83–2.67 mm), 16 ovig. ♀ (cl 2.67–3.93 mm), Hainan, Sanya, Xiaodonghai , 1992-3-18, no.92C-039 ; MBM129576 , 1 ovig. ♀ (cl 2.49 mm), Dadonghai, Sanya , Hainan, 1985-4-21, no.75-K125 ; MBM129625 , 1 ovig. ♀ (cl 2.32 mm), Hainan, Sanya, Xizhou Island , 1955-12-30, no.55-K557, coll. Rui-Yu Liu ; MBM136608 , 5 ♂ (cl 1.61–2.37 mm), 4 ovig. ♀ (cl 1.81–2.56 mm), Dadonghai, Sanya , Hainan, 1997-3-1, no . CJ97 C-266, coll. Xin-Zheng Li ; MBM129656 , 2 ♂ (cl 1.62, 1.76 mm), 1 ♀ (cl 1.72 mm), 9 ovig. ♀ (cl 2.25–3.16 mm), Hainan, Sanya , 1955-4-5, no.55-K235, coll. Yong-Liang Wang.

Description. Rostrum nearly straight and slightly longer than carapace, with 0–1 tooth on middle of dorsal margin and 3–5 teeth along ventral margin. Carapace smooth, with some tufts of short plumose setae. Supraorbital spine, antennal spine and branchiostegal spine present; pterygostomial angle rounded.

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Abdomen smooth and strongly geniculated at third somite. Some tufts of plumosesetae present on second to fourth somites. Pleurae of all somites rounded. Lateral plate of sixth somite acutely pointed. Telson slightly shorter than uropod, dorsal surface with 2 pairs of dorsal spines situated equidistantly; posterior margin with 4 pairs of spines.

Eye cylindrical; cornea shorter than stalk. Antennular peduncle falling short of rostral apex; first segment long, with stout outer distal spine; stylocerite long, not reaching distal margin of first segment of antennular peduncle. Antennal scale

© Zoological Systematics, 40 (2): 107–165

reaching apex of rostrum; about 3 times as long as wide; with distolateral tooth exceeded by lamina.

Third maxilliped reaching distal margin of antennular peduncle, with exopod; ultimate segment flattened, with 10–12 corneous spines distally. First pereopod short, falling short of distal margin of antennular peduncle; chela oval in outline; merus slightly longer than carpus. Second pereopod reaching or slightly overreaching distal margin of antennular peduncle; carpus divided into 3 articles; Ischium slightly shorter than merus. In female, third pereopod long, overreaching antennal scale by dactylus which with 13–16 spinules arranged in parallel on flexor margin; propodus about 2.5 times as long as dactylus, with 12–18 spinules on flexor margin; carpus with single lateral spine on proximal part; merus longer than propodus, with 2 or 3 lateral spines. Fourth pereopod reaching nearly to rostral apex, carpus with single lateral spine on proximal part; merus always with only one lateral spine. Fifth pereopod reaching distal end of antennular peduncle; carpus also with single lateral spine on proximal part; merus with 0 or 1 lateral spine. In male, third to fifth pereopod prehensile and subchelate in different levels; third pereopod being most obvious.

Coloration in life. Body brown or light green.

Distribution. South China Sea; widespread in Indo-Pacific, from Red Sea to South Africa to Japan, Philippines, Indonesia, and Australia, eastward to Hawaii; littoral and slightly sublittoral; 0– 25 m.

Figures

Fig. 1. Hippolyte ventricosa H. Milne Edwards, 1837. A. Carapace, lateral view; B. Abdominal pleurae, lateral view; C. Antennular peduncle, dorsal view; D. Antennal scale; dorsal view; E. Third maxilliped, lateral view; F. Third pereopod in female, lateral view; G. Dactylus and propodus of third pereopod in male, lateral view. Scale bars =1mm.

Fig. 36. Adults. A–C. Hippolyte ventricosus H. Milne Edwards, 1837, from seagrass bed, subtidal, Sanya, Hainan Island; D. Latreutes sp., from sandy intertidal zone, Dongfang, Hainan Island.