Oncocephala senegalensis is a species of beetle of the family Chrysomelidae. It is found in Angola, Cameroon, Congo, Equatorial Guinea, Ethiopia, Gabon, Guinea-Bissau, Guinea, Nigeria, Ivory Coast, Togo, Senegal, Sierra Leone and Somalia.
Adults reach a length of about 4.8âÂÂ5.8 mm. The head, pronotum, elytra, legs and antennae are black with a dark brownish tinge.
The recorded host plant for this species is Ipomoea batatas.