Uca triangularis ( A. Milne-Edwards, 1873 )

Shih, Hsi-Te, Ng, Peter K. L., Fang, Shou-Hua, Chan, Benny K. K. & Wong, Kingsley J. H., 2010, Diversity and distribution of fiddler crabs (Brachyura: Ocypodidae: Uca) from China, with new records from Hainan Island in the South China Sea, Zootaxa 2640, pp. 1-19 : 11-12

Uca triangularis ( A. Milne-Edwards, 1873)

Gelasimus triangularis A. Milne-Edwards, 1873: 275 [type locality New Caledonia].

Uca (Celuca) triangularis triangularis — Crane 1975: 290, pl. 38F–J, figs. 50, 59B, C, 68D, E [list].

Uca triangularis triangularis — Tang et al. 2007: 259 [Zhanjiang, Guangdong]. Uca (Paraleptuca) triangularis —Ng et al. 2008: 241 [list].

Material examined. None.

Distribution. West Pacific (the Ryukyus, Taiwan, China, Philippines, Borneo, Indonesia, New Guinea). Remarks. According to Crane (1975: map 7), U. triangularis consists of two geographic subspecies. U. triangularis triangularis is distributed in the western Pacific and U. triangularis bengali Crane, 1975 , in the eastern Indian Ocean. Both are now regarded as separate species (Ng et al. 2008). U. triangularis is a relatively small species (CW <16.5 mm) and prefers high intertidal habitats ( Crane 1975), and for these reasons, it may have been overlooked by collectors in the past. For example, it has only relatively recently been recorded from Taiwan ( Wang 1984) and Penghu ( Hung 1997). Therefore, although there is only one record of U. triangularis from China (Guangdong), more records from other provinces are likely after careful surveys.