Sphecodes scabricollis Wesmael, 1835

Described as: Sphecodes scabricollis Wesmael, 1835: 287 . Synonym: Sphecodes perversus Ritsema, 1879: 56 –57.

Distribution. Europe north to southern Finland, present in England, southward absent from the Balkan Peninsula and Turkey (Westrich 1989, Warncke 1992).

Biology. Very rare species of sandy wetlands, in most countries endangered or extinct. The distribution is much weaker than in the past. The host is Lasioglossum zonulum, recorded in the literature (Blüthgen 1934, Yates 2002), the first author also recorded Halictus compressus, H. quadricinctus and Lasioglossum prasinum as likely hosts. More recently, parasitation only in nests of L. zonulum was observed (M. Herrmann, pers. comm.).