Pseudorphnus

Frolov, Andrey V. & Montreuil, Olivier, 2006, Description of the male of the rare Madagascan species Pseudorphnus hiboni with notes on the genus Pseudorphnus (Coleoptera: Scarabaeidae: Orphninae), Zootaxa 1154, pp. 27-33 : 32

Key to Pseudorphnus species

1. Elytra without distinct striae, punctuate on disc; elytral intervals almost flat; parameres with acute apices (in lateral view, Fig. 5) ................................................... P. olsoufieffi

­ Elytra with distinct striae, punctuate or impunctate on disc; elytral intervals convex or flat; parameres of different shape ................................................................................. 2

2. Elytra with densely punctuate striae (Fig. 1, 4); elytral intervals somewhat convex; protibial horns of male directed upward and forward; apices of parameres fingershaped (Fig. 3, 7); larger (11–13 mm) .............................................................. P. hiboni

­ Elytra almost impunctate on disc, with striae visible as slightly elevated lines; elytral intervals almost flat; protibial horns of male wider and directed upward; apices of parameres hook­shaped (in lateral view, Fig. 6); smaller (6.5–8.5 mm) ...... P. coquereli