Six new Brazilian species of the gall-associated Doryctinae genus Allorhogas are described and illustrated: A. copaiba sp. nov., A. ilexaffinis sp. nov., A. inquilinus sp. nov., A. quarentenus sp. nov., A. vassununga sp. nov. and A. viridis sp. nov. We provide host plant records for five of these species, three and one of which are new host plant genera (Ilex L., Copaifera L. and Eugenia P. Micheli ex L.) and new host plant family (Aquifoliaceae) records, respectively. Allorhogas inquilinus sp. nov., whose biology was previously reported, represents the first confirmed case of phytophagous inquilinism in the genus. An updated key to Brazilian species of Allorhogas is provided.