BELOSTOMATIDAE OCCURRING IN

Polhemus, Dan A. & Polhemus, John T., 2013, Guide To The Aquatic Heteroptera Of Singapore And Peninsular Malaysia. X. Infraorder Nepomorpha-Famlies Belostomatidae And Nepidae, Raffles Bulletin of Zoology 61 (1), pp. 25-45 : 26

KEY TO GENERA AND SPECIES OF BELOSTOMATIDAE OCCURRING IN SINGAPORE AND MALAYSIA

1. Very large species, body length exceeding 60 mm; body shape elongate-ovate and parallel-sided ( Fig. 1 ), lateral margins of hemelytra straight; inner margins of eyes parallel ...... Lethocerus indicus (Lepeletier & Serville)

– Smaller species, body length less than 20 mm; body shape more rounded, lateral margins of hemelytra outwardly arcuate ( Fig. 2 ); inner margins of eyes convergent anteriorly .................. Diplonychus rusticus (Fabricius)

Figures

Fig. 1. Lethocerus indicus (Lepeletier & Serville), male, specimen from Laos, Vientiane Prov.

Fig. 2. Diplonychus rusticus (Fabricius), male, specimen from Philippines, Luzon.