Microdytes elgae Hendrich, Balke & Wewalka, 1995

Hendrich, Lars & Balke, Michael, 2004, Aquatic Coleoptera Of Singapore: Species Richness, Ecology And Conservation #, Raffles Bulletin of Zoology 52 (1), pp. 97-145 : 116

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).

Figures

Figs. 15-17.15. Microdytes elgae Hendrich, Balke & Wewalka, 1995 (Fam. Dytiscidae, 2.0 mm); 16. Lacconectus corayi Brancucci, 1986 (Fam. Dytiscidae, 3.7 mm); 17. Hydaticus bipunctatus conjungens Régimbart, 1899 (Fam. Dytiscidae, 13.4 mm).