Hemaris tityus (Taxonomy)
Synonymized with Sphinx fuciformis (as var. ß) by Linnaeus, 1767, Syst. Nat. (Edn 12): 804. Reinstated (as Sphinx bombyliformis) as a species by Esper, 1780, Die Schmett.2: 180. Transferred to Hemaris, with tityus was reinstated as the correct name, by Kirby, 1892, Synonymic Cat. Lepid. Heterocera1: 626.
Antennal hook than in Hemaris fuciformis, third and fourth flagellomeres from apex broader. Thorax without reddish tawny lateral strip.Hindtibia apically black. Forewing with transparent discal cell not divided longitudinally by a scaled fold; inner edge of marginal band not expanded at M2; inner edge sometimes slightly dentate Uncus and gnathos as in Hemaris fuciformis.Juxta rough with granules only apically, produced into a slender lobe.Valves asymmetrical; left valve broader than in Hemaris fuciformis, not spatulate, right valve narrowed in apical third. Left harpe represented by an obvious setose hump, evenly and broadly convex or flat; right harpe almost straight, apically clubbed and apically armed with spines.Aedeagus; process longer than in Hemaris fuciformis, acutely pointed. Antrum quite small, approximately square with rounded corners..Ductus bursae distinct, separating the antrum from the corpus bursae.