Rectoscutaria simplex 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 elytra testaceous with a broad fuscous border all round. The head and pronotum are clothed with dense black and greyish villose hairs. The pronotum is scabroso-punctate from the apex to the base, which is not very depressed. The elytra are not costate, but have a longitudinal impression along the suture, which is deeply and closely punctured. The punctures bearing each a black, erect hair. The pygidium is briefly hairy and the under side is villose, with greyish-white hairs.