Hiplyra platycheir ( De Haan, 1841 ) Galil, 2009

Galil, Bella S., 2009, An examination of the genus Philyra Leach, 1817 (Crustacea, Decapoda, Leucosiidae) with descriptions of seven new genera and six new species, Zoosystema 31 (2), pp. 279-320 : 295-296

Hiplyra platycheir ( De Haan, 1841) n. comb. ( Figs 2F ; 10 )

Philyra platycheir De Haan, 1841: 132 , pl. 33 fig. 6. — Herklots 1861: 27. — Yamaguchi & Baba 1993: 325. — Fransen et al. 1997: 89. — Ng et al. 2001: 10 (includes more references for Taiwan fauna).

Philyra platycheira – Stimpson 1858: 160; 1907: 154. — Gee 1925: 161. — T. Sakai 1934: 285, text fig. 3; 1935: 64, pl. 12, fig. 3, text fig. 25; 1937: 156, pl. 15, fig. 6; 1965: 48, pl. 20, fig.1. — Lin 1949: 15. — Miyake 1961a: 15; 1961b: 171. — Miyake et al. 1962: 127. — Takeda 1978: 33; 1982: 100, fig. 294; 1987: 11. — Shen & Dai 1964: 30, fig.

Philyra platychira T. Sakai, 1976: 109 , pl. 32, fig. 4, text fig. 59a. — Takeda 1979: 153. — Hill 1982: 199, pl. 3b. — Dai et al. 1986: 77, fig. 38, pl. 9.5. — Dai & Yang 1991: 84, fig. 38, pl. 9.5. — Chen & Sun 2002: 378, fig. 168, pl. 15.3.

TYPE MATERIAL. — Japan. 1823-1834, coll. P. F. von Siebold & H. Bürger, 2 ♂♂ cl 14.3, 9.0 mm, 2 ♀♀ cl 13.4, 12.2 mm, lectotype (selected by Yamaguchi & Baba [1993: 325]) ( RMNH D793) (the ♂ cl 14.3 mm was designated as the lectotype and the remaining specimens are considered to be paralectotypes).

MATERIAL EXAMINED. — Japan. Mimase, Shikoku, 17. V.1979, coll. K. Sakai & L. B. Holthuis, 9♂♂ cl 13.4- 18.9 mm, 1 ovig. ♀ cl 16.7 mm ( RMNH D32767). — Oshima passage, 25-40 m, 29. VI.1970, coll. Kagoshima University, id. M. Takeda, 4 ♂♂ cl 12.3-15.5 mm, 2 ♀♀ cl 14.8, 14.9 mm ( NSMT 9661). — Between Shiraki- Zaki and Otsu-Zaki, 50 m, 4.VIII.1988, coll. and id. M. Takeda, 2 ♂♂ cl 11.4, 9.7 mm ( NSMT 9666). — Off Doren, Oshima passage, 40 m, 8.VIII.1988, coll. and id. M. Takeda, 2 ♂♂ cl 10.4, 11.0 mm, 2 ♀♀ cl 11.7, 12.7 mm ( NSMT 9667).

DISTRIBUTION. — Japan, China, Taiwan.

DESCRIPTION

Dorsal surface of carapace minutely punctuate anteriorly, closely granulate on branchial regions, minutely granulate on intestinal region. Frontal region only slightly produced. Hepatic region very slightly tumescent, punctate, not granulate. Lower margin of subhepatic facet granulate. Branchiocardiac grooves distinct. Front produced, shallow median cleavage. Anterior margin of epistome medially notched. Anterior margin of efferent channel separated from minutely beaded lateral margin by deep incision, lateral margin not reaching as far forward as anterior margin of efferent channel. Lateral margin of carapace posteriorly to subhepatic facet closely beaded, granules smaller posteriorly. Epimeral surface minutely granulate; epimeral margin minutely beaded. Sternal plates minutely granulate anteriorly. Anterior margin of abdominal sulcus prominently granulate.Fused male abdominal segments 2-6 bearing posteriorly granulate basal knobs. Margins of fused abdominal segments in female minutely granulate. Cheliped merus 0.8 as long as carapace in male, its surface minutely granulate, with perliform granules anteriorly.Lower margin of propodus with line of granulates, upper margin minutely granulate. Dactyl sickle-shaped, longer than upper margin of propodus.Pollex bearing a triangular blade distally. Male first pleopod with minute apical process.

REMARKS

De Haan’s (1841: pl. 33 fig. 6) drawing had sufficient details for accurate identification of H. platycheir n. comb.: the slightly produced frontal region, the oblique anterolateral margin lacking the granulate hepatic tumescence and the long, curved cheliped dactyl. Additional characters that set the species apart from it congeners are the triangular blade distally on its pollex and the form of the lateral margin of its efferent channel.

Ng et al. (2001: 10) cited several Chinese and Taiwanese authors whose publications I was unable to obtain but these records are regarded as H. platycheir n. comb. for the moment.

Figures

FIG. 2. — A, Philyra globus (Fabricius,1775) n. comb., ♂ cl 18.8 mm (NHM 1999.6),first male pleopod, distal end of first male pleopod; B, P. samia n. sp., ♂ holotype, cl 21.6 mm, South Africa (SAM A8335), first male pleopod, distal end of first male pleopod; C, Afrophila punctata (Bell,1855) n. comb.,♂ cl 20.1 mm, South Africa (USNM 252713),first male pleopod,distal end of first male pleopod,second male pleopod; D, Atlantolocia laevidorsalis (Miers, 1881) n. comb., ♂ lectotype cl 15.4 mm, Senegal, Gorée I. (NHM 1881.24), first male pleopod, distal end of first male pleopod; E, Atlantophila cristata (Miers, 1881) n. comb., ♂ lectotype cl 5.7 mm, Senegal, Gorée I. (NHM 1881.24), first male pleopod, dorsal and ventral views; F, Hiplyra platycheir (De Haan, 1841) n. comb., ♂ cl 15.5 mm, Japan (NSMT 9661), first male pleopod, distal end of first male pleopod. Scale bars: 1 mm.

FIG. 10. — Hiplyra platycheir (De Haan,1841) n. comb., ♂ cl 15.5 mm, Japan, Oshima passage (NSMT 9661): A, dorsal view; B, ventral view.