O.  Staudinger, ?Beitrag zur Lepidopteren-Fauna Central-Asiens?, Stettiner Entomologische Zeitung, vol. 42, pp. 393-424, 1881.

H. S.  Jewett, ?Notes on Hemaris marginalis, Grote?, Bulletin of the Buffalo Society of Natural Sciences, vol. 4, pp. 17-19, 1881.