Aequatobolbus , a new South American genus of Bolboceratinae (Coleoptera: Scarabaeoidea: Bolboceratidae) from Ecuador

Aequatobolbus otongachi , gen. et sp. nov. , the new South American genus and species of Bolboceratinae, are described from Ecuador. The new genus and species are diagnosed and illustrated, and an updated key to the South American genera of Bolboceratinae is given. This is the ninth genus of Bolboceratinae from South America and one of the most northern distributed. It is morphologically related to Bolbapium Boucomont, 1910 and Parabolbapium Ide & Martínez, 1994, but it is easily distinguished from both by its longer ocular canthus.