Coelosis, Hope, 1837

Alvarez, Héctor Jaime Gasca, da, Claudio Ruy Vasconcelos, Fonseca & Ratcliffe, Brett C., 2008, Synopsis of the Oryctini (Coleoptera: Scarabaeidae: Dynastinae) from the Brazilian Amazon, Insecta Mundi 2008 (61), pp. 1-62 : 5

Key to the species of adult Coelosis of Brazilian Amazonia

1. Pronotum with 2 subparallel horns, each with a rounded apex. Prosternal process long, triangular. Female pronotal surface with dense punctures ( Fig. 4 ) ............................ C. bicornis (Leske)

— Pronotum with larger, broad, bifurcate, dorsally flattened horn. Prosternal process short, rounded. Female with disc of pronotum lacking punctures. ( Fig. 10 ) ................. C. biloba (Linnaeus)

Figures

Figure 1-6. Coelosis bicornis. 1) Habitus. 2) Male head and pronotum (scale line: 5 mm). 3) Prosternal process. 4) Female pronotum dorsal view. 5) Parameres frontal view. 6) Parameres lateral view (scale line: 1 mm).

Figure 8-12. Coelosis biloba. 8) Habitus. 9) Male head and pronotum (scale line: 5 mm). 10) Female pronotum dorsal view. 11) Parameres frontal view. 12) Parameres lateral view (scale line: 1 mm).