Pseudorphnus

Frolov, Andrey V., Montreuil, Olivier & Akhmetova, Lilia A., 2016, Review of the Madagascan Orphninae (Coleoptera: Scarabaeidae) with a revision of the genus Triodontus Westwood, Zootaxa 4207 (1), pp. 1-93 : 13

Key to the Pseudorphnus species (males)

1 Elytra without distinct striae, punctate on disc; elytral intervals almost flat....................................... 2

- Elytra with distinct striae, punctate or impunctate on disc; elytral intervals convex or flat.............................3

2 Frontoclypeus with transverse carina ( Figs. 5 E–F), sculpture of frontoclypeus smooth; parameres with less acute apices (in lateral view, Fig. 5 C).................................................................... P. carinatus Frolov

- Frontoclypeus with conical tubercle medially ( Figs. 6 D–E), sculpture of frontoclypeus rugose; parameres with more acute apices somewhat depressed laterally (in lateral view, Fig. 6 C)................................... P. olsoufieffi Paulian

3 Elytra with densely punctate striae ( Figs. 7 A, E); elytral intervals somewhat convex; pronotal horns of male directed upward and forward ( Figs. 7 A–B); apices of parameres finger shaped ( Fig. 7 C); length 11–13 mm ............... P. hiboni Paulian

- Elytra almost impunctate on disc, with striae visible as slightly elevated lines ( Figs. 8 A–C); elytral intervals almost flat; pronotal horns of male wider and directed upward ( Figs. 8 B, D); apices of parameres hook-shaped (in lateral view ( Fig. 8 G); length 6.5–8.5 mm .................................................................. P. coquerelii (Fairmaire)

Figures

FIGURE 5. Pseudorphnus carinatus. Habitus (A—dorsal, B—lateral view), aedeagus in lateral view and parameres in dorsal view (C), labels of holotype (D), head in dorsal view (E), head and pronotum in dorso-lateral view (F), distributional records (G).

FIGURE 6. Pseudorphnus olsoufieffi. Habitus (A—dorsal, B—lateral view), aedeagus in lateral view and parameres in dorsal view (C), head in dorsal view (D), head and pronotum in dorsolateral view (E), labels of holotype (F), distributional records (G).

FIGURE 7. Pseudorphnus hiboni. Habitus in dorsal view (A—male, F—female), head and pronotum in dorsolateral view (B), aedeagus in lateral view and parameres in dorsal view (C), protibia (D, male left, female right), base of elytra, SEM (E), labels of holotype (G), distributional records (H).

FIGURE 8. Pseudorphnus coquerelii. Habitus (A—female holotype in dorsal view, B—male in dorsal view, C—female in dorsal view, D—male in lateral view), labels of holotype (E), base of elytra, SEM (F), aedeagus in lateral view and parameres in dorsal view (G), distributional records (H).