Type species: Sphinx hyloeus Drury, 1773, by subsequent designation by Grote, 1873, Bull. Buffalo Soc. nat. Sci. 1: 26. Sphinx hyloeus was included by Walker and cited by Grote as Sphinx hylaeus, an incorrect subsequent spelling.
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith
