Rhinaspis Perty, 1833

Mallogaster Dejean, 1833: 162, nomen nudum.

Rhinaspoides Moser, 1919b: 348 . Type species: Rhinaspoides aeneofusca Moser, 1919 (designation: monotypy).

Ulomenes Blanchard, 1850: 125 . Type species: Ulomenes hypocrita Blanchard, 1850 (designation: monotypy); synonym of Rhinaspis fuhrmanni Smith (2016: 2) (replacement name).

Hyporhiza Dejean, 1833: 162. Type species: Melolontha hypocrita Mannerheim, 1829 (designation: monotypy).

Rhinaspoides – Katovich 2008: 6 (synonymy).

Ulomenes – Katovich 2008: 6 (synonymy).

Hyporhiza – Bousquet & Bouchard 2013: 37 (synonymy).

Type species

Rhinaspis schrankii Perty, 1833 (designation: monotypy); junior synonym of Rhinaspis aenea (Billberg, 1820) .

Diagnosis

Clypeal ventral area strongly widened, posterior angle partially covering the canthus (Fig. 10 D–F); pronotal anterior margin beaded, lateral margins crenulate, posterior margin prominent (Fig. 10 D–F); prosternum anteriorly concave (similar to Fig. 12 K); protibia with three external teeth and with a spur; elytron with three smooth and weakly prominent lines between internal margin and humerus, posterior and posterointernal margins not beaded; abdomen with intersegmental membrane VII–VIII concealed.

Remarks

The majority of species of Rhinaspis are characterized by having the male clypeus anteriorly prominent with a broad, truncate apex (e.g., Rhinaspis aenea, Fig. 10 D) or a bifid horn (e.g., Rhinaspis ohausi Moser, 1921, Fig. 10 E), and male and female clypeal posterior angle acute and strongly extended over the canthus. However, some species have a trapezoid or rectangular clypeus (e.g., Rhinaspis aeneofusca, Fig. 10 F). The structure of the pronotum and the elytron, described in “diagnosis”, are more suitable to distinguish Rhinaspis from other Macrodactylini genera.