Frankenbergerius opacus Frolov et Scholtz, 2005
Diagnosis. This species is similar to F. nanus and F. nitidus but can be separated from them by the concave base of the pronotum, small longitudinal keel on the pygidium, and the shape of the parameres.
Distribution. The only recorded locality for this species is Stellenbosch (Western Cape Province).
Body length: 7.5 mm.
Frolov, A.V., Scholtz, C.H. 2005. Revision of the southern African genus Frankenbergerius Balthasar with description of new taxa (Coleoptera: Scarabaeidae: Scarabaeinae). Journal of Natural History, 39(25): 2355-2377.