Aquatic Coleoptera Of Singapore: Species Richness, Ecology And Conservation # Author Hendrich, Lars Author Balke, Michael text Raffles Bulletin of Zoology 2004 52 1 97 145 journal article 10.5281/zenodo.13244881 2345-7600 13244881 Microdytes elgae Hendrich, Balke & Wewalka, 1995 ( Fig. 15 ) Microdytes elgae Hendrich, Balke & Wewalka in Hendrich & Balke, 1995: 42; Wewalka, 1997: 23 ; Balke & Hendrich, 1999: 15 ; Balke et al., 1999: 325; Nilsson, 2001: 228 . Material examined. – 20 specimens - Bukit Timah - 6 ex. , 27 Aug.1993 , y 1841, Taban Valley , coll. M. Balke & C. M. Yang ( ZRC ) ; 2 ex. Taban Valley , 14 Dec.1995 , NS 216, coll. H. K. Lua and others ( ZRC ) ; 4 ex. , Taban Valley , small streamlet in primary forest, 9 Apr.1997 , coll. M. Balke & L. Hendrich ( CBH ) ; 8 ex. , Taban Valley , small streamlet in primary forest, 24 Apr.1997 , coll. M. Balke & L. Hendrich ( CBH , ZRC ) . Distribution. – Bhutan , Indonesia [ Bali , Lombok, Kalimantan ], Malaysia [Peninsula, Sarawak ], Singapore ( Wewalka, 1997 ; Balke et al., 1999). Ecology. – Microdytes elgae inhabits small shaded or semi-shaded helocrenes streams in primary rain forest. The beetles usually hide beneath leaves and in the gravel under only a very thin film of water. In Singapore the species was collected along with Microdytes pasiricus (Csiki) , Laconectus krikkeni Brancucci and Hydraena spp. It is confined to a very small stream in the forest of the Bukit Timah Nature Reserve (Balke et al., 1999).