Six new species of the doryctinae wasp genus Hecabolus Curtis 1834 (Braconidae) are described from Brazil and Venezuela: H. assis sp. nov., H. julianoi sp. nov., H. robustus sp. nov., H. seniaridus sp. nov., H. shimborii sp. nov., and H. sulmatogrossensis sp. nov. A key to the nine described species of Hecabolus is provided.