Omphra, Dejean, 1821

Raj, Shiju T., Sabu, Thomas K. & Danyang, Zhao, 2012, The apterous endemic genus Omphra Dejean (Coleoptera: Carabidae: Helluonini) of the Indian subcontinent: taxonomy with notes on habits and distributional patterns, Insecta Mundi 2012 (206), pp. 1-15 : 4-5

Key to the species of the genus Omphra

1. Elytral apex obliquely truncate ( Fig. 9 )........................................................................................ 2

– Elytral apex truncate ( Fig. 10 )...................................................................................................... 4

2(1). Elytral apex pointed and not emarginated ( Fig. 9 ), elytral setae grey in color.......................... 3

– Elytral apex not pointed and emarginated ( Fig. 11 ), elytral setae black or brownish red in color. .................................................................................................................... O. pilosa Klug

3(2). Elytral humerus pronounced ( Fig. 2 )............................................................ O. hirta Fabricius

– Elytral humerus not pronounced ( Fig. 7 ). ...................................... O. rotundicollis Chaudoir

4(1). Elytral apex deeply emarginated ( Fig. 12 ). ........................................... O. complanata Reiche

– Elytral apex weakly emarginated or not emarginated. ............................................................... 5

5(4). Elytral apex weakly emarginated ( Fig. 11 ); pronotum surface flat; legs dark red in color. ........ ........................................................................................................................... O. rufipes Klug

– Elytral apex not emarginated ( Fig. 10 ); pronotum surface convex; legs black or reddish brown in color. ........................................................................................................................................ 6

6(5). Elytral humerus not pronounced ( Fig. 8 ); anterior margin of abdominal sternites yellowish red and posterior margin dark red in color ( Fig. 15 ); pronotum strongly convex............................ ...................................................................................................................... O. drumonti n. sp.

– Elytral humerus pronounced ( Fig. 5 ); anterior margin of abdominal sternites brownish red; pronotum slightly convex. ................................................................................. O. atrata Klug

Figures

Figure 15. Color pattern of sternites of Omphra drumonti n. sp.

Figures 9–12. Elytral apex. 9) Pointed and not emarginate. 10) Straight and not emarginate. 11) Oblique and weakly emarginate. 12) Straight and deeply emarginate.

Figures 2–8. Habitus of Omphra species. 2) O. hirta syntype. 3) O. pilosa syntype. 4) O. rufipes syntype. 5) O. atrata syntype. 6) O. complanata holotype. 7) O. rotundicollis holotype. 8) O. drumonti n. sp. holotype.