Dynastinae beetles were collected at the Parque Nacional do Jaú, state of Amazonas between July/1993 to June/1996, during new moon and last quarter in five different places near the lowlands of the Jau river. A mixed 250 W mercury vapor lamp plus two ultraviolet lights, black light (BL) and black light blue (BLB) were used for atraction on a white sheet in daily periods of 12 consecutive hours. 34 species of 14 genera were identified being the species of the tribe Cyclocephalini the more represented (19 species), followed by Oryctini (6 spp.), Phileurini (4 spp.), Pentodontini (3 spp.) and Dynastini with 2 species.
Coleoptera; Scarabaeoidea; Scarabaeidae; Dynastinae; Parque Nacional do Jaú