Oncocephala nervosa is a species of beetle of the family Chrysomelidae. It is found in Cameroon, Tanzania and Uganda.
Adults reach a length of about 4.8âÂÂ5.5 mm. The head, pronotum and elytra are charcoal black, with a light brownish tinge on the explanate areas of the elytra. The legs and antennae are light brownish with a black tinge on some areas.
No host plant has been documented for this species.