Hyphydrus lyratus lyratus Swartz, 1808 Hyphydrus lyratus Swartz in Schönherr, 1808: 29; Yano et al., 1983b: 109. Hyphydrus lyratus lyratus Swartz: Biström, 1982: 22, and references therein; Biström et al., 1993: 293; Hendrich & Balke, 1995: 37; Nilsson, 2001: 223. Material examined. – 3 specimens - Sungai Buloh - 1 ex., Nature Park, 10 Apr.1991, 34E, coll. K. Lim (ZRC); 2 ex., Nature Park, mercury light trap, 10 Jul.1992, y 804, coll. K. Lim (ZRC). Distribution. – Australia, China, Japan [Okinawa, in coll. Hendrich], Fiji Islands, Indonesia [Bali, Sumbawa], Laos, Malaysia [Peninsular Malaysia], Myanmar, New Guinea, Thailand, Vietnam (Biström, 1982; Biström et al., 1993; Hendrich & Balke, 1995). Singapore! Ecology. – Hyphydrus lyratus inhabits different kinds of exposed lentic habitats. The species is found in muddy pools, ponds, paddy fields and ditches preferable in disturbed areas. The species is often attracted to light. It is the most common species of the genus in Southeast Asia (Yano et al., 1983b; Biström, 1982; Hendrich & Balke, 1995).

Published as part of Hendrich, Lars & Balke, Michael, 2004, Aquatic Coleoptera Of Singapore: Species Richness, Ecology And Conservation #, pp. 97-145 in Raffles Bulletin of Zoology 52 (1) on page 116, DOI: 10.5281/zenodo.13244881