Peritrichia flabellata 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 reddish-brown elytra with white scales around the apex. The upper surface has black hairs, while the hairs on the underside are greyish-white. The hind tibiae have dense, bushy brownish-black hairs.