Pseudotrochalus piceonigerPseudotrochalus piceoniger is a species of beetle of the family Scarabaeidae. It is found in Tanzania.DescriptionAdults reach a length of about 8 mm. They are blackish-brown and opaque, with shiny legs and the pronotum with a silky sheen. The head is moderately densely punctate. The antennae are ferruginous.