Reference
Felipe Gil-T. (2010): Concerning the morphology of Hyles tithymali (Boisduval, 1832) from La Palma island (W. Canary islands, Spain) and its formal ascription to Hyles tithymali phaelipae Gil-T. & Gil-Uceda, 2007 – Atalanta – 41: 253 - 256.