Gapon, 2007f (mating, morph., genitalia); Jaus, 1934 (wing polymorphism); Pluot, 1978 (genitalia); Popovici-Baznoşanu & Dobreanu, 1941 (biol., morph.); V.G. Putshkov, 1974a; Schlagbauer, 1966 (rearing); Socha, 1993 (bibliogr., review of various aspects); Seidenstücker, 1953c (polymorphism).
Distribution: Katbeh et al., 2000 (Jordan); Protić, 2001a (Montenegro Serbia); J. Ribes & Borges, 2005 (Azores); Heckmann et al., 2015 (Crete); Carapezza et al., 2017 (Arab Emirates); Cassar, 2018 in lit. (Malta); Endestrøl & Roth, 2020 (Finland Ireland Norway); Baymak & Kıyak, 2022 (Kosovo).