Frolov A. V., Akhmetova L. A., Vaz-de-Mello F. Z. 2019. Contribution to the knowledge of the Neotropical canopy dwelling genus Onorius (Coleoptera, Scarabaeidae, Orphninae): another species from southern Ecuador and notes on the hind gut morphology in the Orphninae. Journal of Natural History. 53 (17–18): 1071–1077.
The generic status of Neotropical Orphninae genus Onorius Frolov et Vaz-de-Mello is supported by the discovery of another species in south-eastern Ecuador. The new species differs from O. inexpectatus Frolov et Vaz-de-Mello in the body sculpture and colouration. Both species have two large diverticula in the proximal part of the ileum; such structures are not found in the other members of the Aegidiini and are supposedly autapomorphic for Onorius.