Group 1: Dichotomius (Cephagonus) ascanius (Harold) species-group Diagnosis. recognised among other Cephagonus by the following combination of characters: males sixth ventrite strongly narrowed mediallyı with strong basal groove throughout its extension (Figure 8 (c)); female sixth ventrite with ‘ U ’ -shape emargination at medial portion (Figure 8 (d)); metasternum with irregular surface between punctures (Figure 6 (a)) and clypeo-genal angle obtuse (over 110³) as in D. fissus and D. spadiceus groupsı however very small males and females have very subtle angulation or do not have any angulation at all. Representatives. 1.1: D. ascanius; 1.2: D. mundus; 1.3: D. socius.

Published as part of Nunes, Rafael V. & Vaz-de-Mello, Fernando Z., 2019, Taxonomic revision of Dichotomius (Cephagonus) Luederwaldt 1929 and the taxonomic status of remaining Dichotomius Hope 1838 subgenera (Coleoptera: Scarabaeidae: Scarabaeinae: Dichotomiini), pp. 2231-2351 in Journal of Natural History 53 (37) on page 2261, DOI: 10.1080/00222933.2019.1692088, http://zenodo.org/record/3665519