Syntypes [United States:] Carolina (D.D. Garden); Jamaica [1 ex. MLU; ????]. The Jamaica syntype is the specimen illustrated by Browne, 1756, Civ. Nat. Hist. Jam.: 438, pl. 43, fig. 17.
Transferred to Manduca by Hodges, 1971, in Dominick et al., Moths Amer. N. of Mexico 21: 29.
The name sexta should be ascribed to Linnaeus rather than Johansson, as clearly indicated in Catalogue Twelve (1957) of Sandbergs Bokhandel, Stockholm: 83 (Hodges, 1971, in Dominick et al., Moths Amer. N. of Mexico 21: 29-30).