Atlantolocia laevidorsalis ( Miers, 1881 )

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 : 289-290

Atlantolocia laevidorsalis ( Miers, 1881) n. comb. ( Figs 2D ; 5 )

Philyra laevidorsalis Miers, 1881: 264 , pl. 15.2; 1886: 321. — A. Milne Edwards & Bouvier 1900: 58, pl. 13, figs 14, 15. — Rathbun 1900: 298. — Bouvier 1906: 199. — Balss 1921: 52. — Monod 1933: 487; 1956: 141, figs 169-176. — Capart 1951: 47, fig. 13. — Rossignol 1957: 77; 1962: 115. — Longhurst 1958: 87. — Buchanan 1958: 20. — Gauld 1960: 69. — Forest & Guinot 1966: 56. — Manning & Holthuis 1981: 66.

TYPE MATERIAL. — Syntypes: Senegal. Gorée I., purch. Hermann Maltzan , 1 ♂ cl 15.4 mm, 2 ovig. ♀♀ cl 13.1, 14.4 mm, 3 juvs ( NHM 1881.24 ) (the ♂ cl 15.4 mm is here designated the lectotype and the remaining specimens are now considered to be paralectotypes) .

MATERIAL EXAMINED. — West Africa. Guinean Trawling Survey, La Rafale, stn 8, 15 m, 31.III.1964, 12 ♂♂ cl 8.3-12.5 mm, 5 ovig. ♀♀ cl 7.6- 10.8 mm ( MNHN B.24228).

Mauritania. V.1923, coll. T. Monod, 5 ♂♂ cl 13.4- 13.9 mm ( MNHN).

Congo. Atlantide Exp., 7°19’S, 12°40’E, 47 m, 16.III.1946, 9 ♂♂ cl 11.0- 14.4 mm, 2 ovig. ♀♀ cl 10.3, 11.8 mm ( ZMK CRU 4265).— 7°02’N, 11°42’W, 13 m, 27.X.1956, pres. A. R. Longhurst, 1 ♂ cl 11.4 mm, 2 ovig. ♀ cl 7.8, 12.2 mm (NHM 1957.5.26.178-180). — Off Kipundji, 22-25 m, 25-26.VIII.1965, 5 ♂♂ cl 9.1-14.9 mm, 2 ovig. ♀♀ cl 10.9, 12.2 mm, ( MNHN B.17018).

Senegal. 1907, coll. A. Gruvel, id. E. L. Bouvier, 1 ♀ cl 14.0 mm ( MNHN B.17022). — Between Gorée and M’bao, 8. V.1952, 10 m, coll. I. Marche-Marchad, id. T. Monod, 2 specimens ( MNHN B.17031). — M’bao, 7.XII.1952, id. T. Monod, 1 ♂ cl 8.7 mm ( MNHN B.17034). — Cap Rouge, 14.IV.1909, coll. A. Gruvel, id. E. L. Bouvier, 4 ♂♂ cl 11.6-12.6 mm, 1 ♀ cl 11.9 mm ( MNHN B.17035).

Ivory Coast. Grand Bassam, I.1910, coll. A. Gruvel, id. E.L. Bouvier, 1 ovig. ♀ cl 9.4 mm ( MNHN B.17021). — Calypso, Golfe de Guinée Exp., 1956, 20- 25 m, 1 ♀ cl 11.2 mm ( MNHN B.17030).

Guinea. Calypso, Golfe de Guinée Exp., 1956, 18- 30 m, 1 ♂ cl 7.2 mm, 1 ovig. ♀ cl 7.5 mm ( MNHN B.17029).

Republic of Benin. II.1910, 20 m, coll. A. Gruvel, id. E. L. Bouvier, 4 ♂♂ cl 12.5-13.8 mm, 2 ovig. ♀♀ cl 10.8, 11.0 mm ( MNHN B.17036).

Cape Verde Is. Talisman, 1883 , 1 ♂ cl 13.1 mm, 1 ovig. ♀ cl 11.4 mm ( MNHN B.17023).

São Tomé & Príncipe. Príncipe I., 1956, 10- 12 m, Calypso, Golfe de Guinée Exp., 1 ♀ cl 7.4 mm ( MNHN B.17038).

DISTRIBUTION. — West coast of Africa, from Cap Blanc, Mauritania, to Angola; Cape Verde Is, Príncipe I.

DESCRIPTION

Dorsal surface of carapace finely, sparsely punctate anteriorly. Front truncate, anterior margin of efferent branchial channel visible in dorsal view, anterior margin horizontal, medially with triangular denticle. Anterior margin of efferent channel straight, continuing into minutely beaded lateral margin. Margin of epibranchial angle of carapace more prominentely milled than antero- and posterolateral margin. Epimeral surface smooth. Deflexed surface of posterior margin granulate. Sternum smooth. Anterior margin of abdominal sulcus nearly smooth. Fused male abdominal segments 3-6 lacking laterobasal knobs, median denticle. Fused abdominal segments in female smooth. Cheliped merus 1.25 as long as carapace in male, perliform, prominent granules on its anterior, posterior margins, as well as proximally on upper surface. Row of granules on inner angle of carpus. Palm laterally convex, its upper margin bearing a single line of granules, lower margin rounded, minutely granulate, dactylar inner margins denticulate. Pereiopodal meri bearing granulate line on ventral margin and proximally on dorsal margin; propodi dorsally and ventrally carinate. First male pleopod shaft sinuous, distally setose; apical process spatulate.

Colour

“Uniforme gris brunâtre, plus claire sur la face inférieure; telson blanc ivoire.” ( Capart 1951: 47).

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. 5. — Atlantolocia laevidorsalis (Miers, 1881) n. comb., ♂ lectotype cl 15.4 mm, Senegal, Gorée I. (NHM 1881.24): A, dorsal view; B, ventral view.