Onthophagus manguliensis

Krikken, J. & Huijbregts, J., 2017, Sulawesi Onthophagus: seven new species in select groups (Coleoptera: Scarabaeidae: Scarabaeinae), Zootaxa 4238 (3), pp. 301-334 : 321

The Onthophagus manguliensis group

Group diagnosis. Male: Clypeal apex incised-bidentate. Dorsum generally deplanate, pronotum unmodified. Proepisternum concave, limiting coxal-lateral ridge evenly curving to underside of anterolateral angle. Head at most with slight (low, transverse) elevation(s), i.e., on clypeofrontal transition and a pair of slight (somewhat transverse, subangular) callosities between anterior part of eyes. Protibia elongate and slender, distal section with 3+(1) external denticles; protibial spur simply elongate-acuminate, unmodified. Female: Similar to male, may have elevation(s) between eyes more distinct. Protibia more robust than in male

More group characters: Clypeus with general surface immediately behind anterior border unmodified (without protrusions). Vertex may have slight transverse elevation. Clypeogenal transition at border uninterrupted. Dorsal foramen of eyes narrow. Posterior section of lateral pronotal border slightly sinuate. Pronotal base not particularly modified. Pronotal derm punctate(-setose). Scutellum indistinct. Elytra with discal interstriae flat, generally (asperate-)punctate(-setose). Pygidium unmodified, with transverse basal ridge. Antennal club and scapus unmodified. Metaventrite unmodified. Parameral shape relatively simple. Protibial apex and spur unmodified. Mesotibiae and metatibiae and spurs unmodified. Tarsi and claws simple (metatarsomere 1 at most as long as subsequent tarsomeres combined). Dorsal colour usually black or brown, usually dark with limited (occasionally vague) lighter-coloured pattern. Body length 4.0– 6.5 mm.

Comments. Having seen syntypes of both Onthophagus terminatus Eschscholtz, 1822 ( RMNH, from Manilla) and O. manguliensis Boucomont, 1914 ( MNHN), we cannot see their close relationship, as emphasized by Boucomont (1914). One ecological remark on this group: the included species seem to prefer open spaces.