Matskási István (szerk.): A Magyar Természettudományi Múzeum évkönyve 90. (Budapest 1998)

Makhan, D.: Three new genera and two new species of Hydrochidae from different parts of the World (Coleoptera)

Remarks. Deepakius albicans is brown and small, Deepakius amrishi sp. n. is black and large. Amrishius gen. n. (Figs 9-11) Type species. Hydrochus lacustris NlETNER, 1857. Description. Body elongate. Mandible with 2 apical teeth, lateral side with more than 10 setae (Fig. 9). Maxillary palps 3-segmented (Fig. 10). Antennae long, 7-scgmented, with 3-segmenled club, longer than the maxillary palps (Fig. 11). Head with coarse punctures. Pronotum longer than wide, with 7 deep depressions on disc; 3 large suboval depressions of them situated in the middle, 2 large suboval ones along each lateral side. Elytra with black striai punctures. Legs simple, tarsi 5segmented. Metasternum and prosternum with large suboval depressions. From dorsal side there is no difference between males and females. Male genitalia: median lobe with very long flagellum, flagellum about 4 times longer than basal piece plus páraméra. Etymology. This genus is named after my son AMRISH MAKHAN. Amrishius lacustris (NlETNER, 1857), comb. n. (Figs 2, 9-12) Hydrochus lacustris NlETNER, 1857: 386. Type. Holotype in Koninklijk Belgisch Instituut voor Natuurwetenschappen, Brussels, Belgium. This specimen is from Sri Lanka. Figs 9-11. Amrishius lacustris (NIETNER): 9 = mandible, 10 = maxilla, 11 = antenna (scale = 0.25 mm)