Renorphnus Frolov & Montreuil, 2009

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 : 54

Genus Renorphnus Frolov & Montreuil, 2009

Renorphnus Frolov & Montreuil, 2009: 65 .

Type species. Orphnus clementi Petrovitz , by original designation.

Diagnosis. Renorphnus are small beetles (body length 7.0– 9.5 mm), with uniform brown coloration. Mandibles are subsymmetrical. Frontoclypeus of both sexes is not tuberculate but with more or less raised anterior margin in the middle. Pronotum is wider than long, smooth, similar in both sexes of most examined specimens, with shallow, sometimes almost indistinct depression anteriorly and 2 small tubercles at each side of the depression. Propleurae are smooth, convex, without carinae separating anterolateral areas from basal area. Scutellum is triangular, narrowly rounded apically, about 1/12 length of elytra. Elytra convex with humeral humps, only first stria distinct. Wings fully developed. Metepisternon triangular, tapering caudally, with slightly widened anterodorsal angle slightly overlapping epypleuron. Protibiae of males with apical outer tooth directed almost parallel to the inner margin of tibia, while in female it is directed somewhat laterad. Phallobase strongly sclerotized dorsally and with a thin membrane ventrally. Parameres tapering apically in lateral view and with a minute tooth at apex, without setae. Internal sac of the aedeagus with an area composed of small spinules and with 2 characteristic semicircular sclerites.

From the other Madagascar genera, Renorphnus can be separated by having larger eyes (width of eye in dorsal view about 1.8 times smaller than distance between eyes), disc of pronotum with 2 feebly developed tubercles in the middle in majority of specimens and apical outer tooth of protibia almost parallel to internal margin of the tibia in males.