Male genitalia. 17 Caryocolum arenariella, Russia, slide GEL 1260 P. Huemer; 18 C. messneri, holotype, Italy, slide GEL 1255; 19 C. lamai, paratype, Italy, slide GEL 1258 P. Huemer; 21 C. habeleri, paratype, France, slide GEL 1289 P. Huemer.

  Part of: Huemer P (2020) Integrative revision of the Caryocolum schleichi species group – a striking example of a temporally changing species concept (Lepidoptera, Gelechiidae). Alpine Entomology 4: 39-63.