Synonymized with Hemaris hylas as a variety by Butler, 1876, Trans. zool. Soc. Lond. 9: 522. Reinstated as a species and transferred to Cephonodes by Kirby, 1892, Synonymic Cat. Lepid. Heterocera 1: 627. Resynonymized with Cephanodes [sic] hylas as a subspecies by Rothschild, 1894, Novit. zool. 1: 65. Reinstated as a species by Rothschild & Jordan, 1903, Novit. zool. 9 (suppl.): 463 (key), 466 (who also noted that the tail in Boisduval's figure is too red).
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith
