A new genus and a new species of wasp-mimicking Harpactorini (Hemiptera, Heteroptera, Reduviidae, Harpactorinae), with an updated key to the Neotropical genera.

, (Hemiptera, Heteroptera, Reduviidae, Harpactorinae, Harpactorini) is described based on male and female specimens from Brazil. Photographs and comments about the syntypes of Burmeister, 1835, Stål, 1872, Burmeister, 1838 and (Fabricius, 1803) are presented. The intra-specific variability and sexual dimorphic characteristics among specimens of are recorded. General characteristics of Spinola, 1837, Stål, 1866, and Gil-Santana, 2015, which seem to be closer genera, are compared, including those of the male genitalia of some species. A key to the species of Burmeister, 1835, and an updated key to Neotropical wasp-mimicking Harpactorini genera are provided.