Vein R2+3 ends in R1, antennae with long arista, male genitalia or ovipositor usually conspicious and beyond wingtip.
Print References
Martin, C. H. (1975). The generic and specific characters of four old and six new Asilini genera in the western United States, Mexico, and Central America (Diptera: Asilidae). Occ. Pap. Calif. Acad. Sci. 119: 1-107 (Full Text) (1)