a1 Schmalhausen Institute of Zoology, Ukrainian Academy of Sciences, 15 B. Khmelnitsky St., 01601 Kiev, Ukraine
The sparetus-group of Entedon is revised. Six species are recognized for the group, including one new species, E. lucasi Gumovsky sp. n., which is described from Algeria. All species are either diagnosed or described, and illustrated, and new distribution records are provided. An illustrated dichotomous key to all species of the group is given. Biology of two species, E. thomsonianus Erdös and E. sparetus Walker, is studied in detail: both species proved to be egg-larval parasitoids of stem-boring weevils, Lixus cardui Olivier on the scotch thistle Onopordum acanthium and Gymnetron asellus (Gravenhorst) on mullein Verbascum sp., respectively. The morphology of larval stages and peculiarities of parasitoid–host relationships are described. Possible benefits of egg-larval parasitism for Entedon species are discussed.
(Accepted September 20 2006)