Rhagastis meridionalis Gehlen, 1928

Proposed as a subspecies of Rhagastis acuta. Synonymized with the nominotypical subspecies by Clark, 1929, Proc. New Engl. zool. Club 11: 10. Implicitly reinstated as a subspecies of Rhagastis acuta by Bridges, 1993, Cat. Fam. Gen. Spec. Sphingidae of the World: VIII.21. Resynonymized with the nominotypical subspecies by Kitching & Cadiou, 2000, Hawkmoths of the world: 65. Raised to species status by Haxaire & Melichar, 2010, European Ent. 3: 87.