Peritrichia flavoornata is a species of beetle of the family Scarabaeidae. It is found in Namibia and South Africa (Northern Cape).
Adults reach a length of about . They are black with dark brown elytra. The pronotum has a margin of scales and two comma-shaped disc spots. The elytra each have a scale band along the suture and outer margin, and a longitudinal band between them. These bands are yellow in males and more whitish in females.