Trochalus alternansTrochalus alternans is a species of beetle of the family Scarabaeidae. It is found in Namibia.DescriptionAdults reach a length of about 9-9.5 mm. The head and underside are light brown and the pronotum and elytra are dark shiny brown. Both the upper and underside are smooth. The surface of the pronotum and elytra is densely and rather coarsely punctate.