Atrocrates

Iwan, Dariusz, 2016, Species groups in the genus Atrocrates Koch, 1956 (Coleoptera: Tenebrionidae: Pedinini), Zootaxa 4175 (6), pp. 571-587 : 584

Key for species groups of Atrocrates

1. Mid part of mentum widened anteriad ( Fig. 27)............................................... occultator -group

-. Mid part of mentum narrowed anteriad ( Figs 5, 9, 15, 20, 23, 34, 50)........................................... 2

2. Pronotal sides rounded or parallelsided basally, widest at 1/3-1/2 from base; posterior pronotal angles not produced posteriad ( Figs 2, 10, 16, 35, 52)................................................................................ 3

-. Pronotal sides narrowed anteriad, widest at base; posterior pronotal angles produced posteriad ( Figs 7, 21, 24).......... 6

3. Male mid tibia simple ( Fig. 4)................................................................ bellamyi -group

-. Male mid tibia with denticle ( Figs 14, 18, 19, 44, 45, 60)..................................................... 4

4. Elytral humeri obtuse ( Fig. 17)............................................................ coconatae -group

-. Elytral humeri rectangular ( Figs 12, 36, 53)............................................................... 5

5. Elytral humeri protruding outwards ( Fig. 12)................................................. bisinuatus -group

-. Elytral humeri not protruding outwards ( Figs 36, 53).............................................. galbasi -group

6. Male mid tibiae S-like, with large, preapical denticle ( Fig. 22)..................................... formosus -group

-. Male mid tibiae slightly widened, with small denticle ( Figs 6, 25).............................................. 7

7. Male mid tibiae with preapical denticle ( Fig. 25, 26)........................................... evestigator -group

-. Male mid tibiae with apical denticle ( Fig. 6).................................................... capensis -group