Synonymized with Hyloicus pinastri as a geographical variety by Staudinger, 1901, in Staudinger & Rebel, Cat. Lepid. Pal. Faunen. 1: 101. Reinstated as a species by Rothschild & Jordan, 1903, Novit. zool. 9 (suppl.): 119 (key), 148. Transferred to Sphinx by Kernbach, 1969, Dt. ent. Z. (N.F.) 16: 108. Transferred to Hyloicus by Danner, Eitschberger & Surholt, 1998, Herbipoliana 4(1): 57. Transferred back to Sphinx by Kitching & Cadiou, 2000, Hawkmoths of the world: 67. Implicitly returned to Hyloicus by Zolotuhin & Yevdoshenko, 2019, Hawkmoths of Russia and adjacent territories: 121, 438.
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith
