Rhopalophthalmus macropsis Pillai, 1964

Type locality. Arabia Sea (Pillai 1964).

Record from Thailand. South-eastern Andaman Sea, next to Phuket Island (Fukuoka & Murano 2002).

Habitat and depth. Marine, depth: 40 m (Fukuoka & Murano 2002) .

Distribution. This species is known from Arabian Sea (Pillai 1964), Japan (Ii 1964), South China Sea (Ii 1964; Wang & Liu 1994), Strait of Malacca (Pillai 1973), East China Sea (Wang & Liu 1997), and Andaman Sea (Fukuoka & Murano 2002).

Remarks. Among the species of the genus Rhopalophthalmus, this species can be easily distinguished by the telson being moderate in length, posterior end including spinose apical setae falling far short of end of uropodal exopod; rudimentary endopod of male eighth thoracopod elongated, extending beyond basal plate of exopod (Hanamura et al. 2011).