The third-instar larvae and pupae of Aegopsis curvicornis Burmeister, and A. bolboceridus (Thomson) are described for the first time based on specimens collected and reared in Cundinamarca, Colombia and Planaltina, DF, Brazil, respectively. A key to the known thirdinstar larvae of the Agaocephalini is provided. Some data on the biology of both species are also included.
