Galathea genkai Miyake & Baba, 1964

Galathea genkai Miyake & Baba, 1964: 208, figs 3, 4 (coast of northern Kyushu, 10 m).— Lewinsohn, 1969: 120, fig. 23 (Red Sea, 20–35 m).— Haig, 1974: 447 (Western Australia).— Baba, 1988: 74 (Sibuyan Sea, Philippines, 68 m).— Davie, 2002: 61 (no record).—Baba et al., 2008: 69 (compilation).— Baba et al., 2009: 111, figs. 90–91 (Taiwan).— Poore et al., 2011: 332, pl. 10G (color photo, Taiwan).

Material examined. South China Sea. Macclesfield Bank, Stn 24, 15°26'30"N, 114°14'E, 24–63 m, May 1892: 1 M 4.3 mm (NHMUK).

Madagascar. ATIMO VATAE, Stn CP3520, 24°51.2'S, 47°28.2'E, 80–86 m, 30 April 2010: 1 M 5.4 mm (MNHN-IU-2013-8433).—Stn DW3532, 24°39.4'S, 47°31.7'E, 86–87 m, 2 May 2010: 1 F 5.5 mm (MNHN-IU- 2013-8432).—Stn DW3605, 24°54.5'S, 44°51.0'E, 56–57 m, 13 May 2010: 1 ov. F 5.5 mm (MNHN-IU-2013- 8435).—Stn DW3606, 25°48.4'S, 44°51.1'E, 44–46 m, 13 May 2010: 1 ov. F 5.6 mm (MNHN-IU-2013-8431).

Remarks. The species is characterized by the scale-like ridges on the carapace and the absence of epigastric spines. The molecular analyses have shown the existence of a complex of species morphologically differentiated by the shape of the rostrum and the length of the walking legs. We have found three different species: G. genkai Miyake & Baba, 1964, G. gladiola n. sp. from Vanuatu, New Caledonia and Chesterfield Islands, and G. m a c h a e r a n. sp. from the Solomon, Wallis and Futuna Islands (see Remarks of G. machaera).

Distribution. Japan, northern Kyushu, Philippines, Sibuyan Sea, Taiwan, South China Sea (Macclesfield Bank), Western Australia, Red Sea, Madagascar; 10– 87 m.