Knysna humeralis is a species of beetle of the family Scarabaeidae. It is found in South Africa (Western Cape).
Adults reach a length of about . They are black, with the legs reddish and the antennae of the same colour as the legs, but with the club infuscate. The pronotum has a median longitudinal band of whitish scales and a supra-lateral one not very well defined. The elytra have a broad band of similar but a little more flavescent scales at a short distance from the suture. The pygidial part, abdomen and pectus are scaly.