Megauchenia

Dasgupta, J., Pal, T. K. & Hegde, V. D., 2015, Review of the Megauchenia Macleay of India (Coleoptera: Nitidulidae: Prometopinae), Zootaxa 4058 (4), pp. 551-560 : 557

Key to the species of Megauchenia of India

1. Body elongate, subparallel ( Figs. 21–22 ); lateral margin of pronotum almost straight; intervals between elytral striae narrower than the striae, apices of elytra sinuate and not uniformly outlined..................................... M. quadricollis

- Body elongate-ovoid ( Figs. 19–20, 29–30 ); lateral margin of pronotum arcuate; intervals between elytral striae wider than the striae; apices of elytra gently arcuate and margin uniformly rounded.............................................. 2

2. Elytral punctures arranged in regular rows........................................................ M. angustata

- Elytral punctures arranged not entirely in regular rows, striations partially erased and punctation confused in areas .. M. indica

Figures

FIGURES 19 – 30. 19, 21, 29 (dorsal habitus): 19, Megauchenia angustata (Erichson, 1843); 21, M. quadricollis (Reitter, 1883); 29, M. indica (Grouvelle, 1908); 20, 22, 30 (ventral habitus): 20, M. angustata; 22, M. quadricollis; 30, M. indica. 23 – 28: male genitalia: 23, tegmen and median lobe of M. angustata, microphotograph; 24, median lobe of M. angustata after separating from tegmen, microphotograph; 25, tegmen and median lobe of M. quadricollis, microphotograph; 26, median lobe of M. quadricollis after separating from tegmen, microphotograph; 27, tegmen of M. quadricollis, line drawing; 28, median lobe of M. quadricollis, line drawing.