Phyllogomphoides imperator sp. n. (9 holotype: Amazonas, San Fernando de Atabapo), Zonophora regalis sp. n. (d holotype: Amazonas, La Ceiba del Ventuari), and Z. obscura sp. n. (d holotype: Bolivar, El Dorado) are described and illustrated. The first differs greatly from its congeners in the colour pattern of the pterothorax, the second is the largest neotropical gomphine species ever recorded, while the third is the darkest representative of the genus Zonophora.