On Menorca, the Hyles dahlii population consists of a hybrid with Hyles euphorbiae. Due to this hybridisation, only few characteristics of Hyles dahlii are present in the imago. There is also hybridisation on Malta. Here it is a hybrid between Hyles dahlii and Hyles tithymali. Research suggests that Hyles dahlii is in fact a species which evolved from Hyles tithymali through isolation.[2]