New species of Coprini (Coleoptera: Scarabaeidae: Scarabaeinae) taken from the pelage of three toed sloths (Bradypus tridactylus L.) (Edentata: Bradypodidae) in Central Amazonia with a brief commentary on scarab-sloth relationships

Two of three species of Scarabaeidae associated with the three toed sloth in the vicinity of Manaus, Amazonas, Brazil are described as new: Trichillum adisi and Uroxys besti. The pupa and third stage larva of T. adisi are described. Ecological aspects of the sloth-scarab associations are discussed.