Reference

Alain Pauly, Gregoire Noel, Gontran Sonet, David G. Notton, Jean-Luc Boeve [Boevé] (2019): Integrative taxonomy resuscitates two species in the Lasioglossum villosulum complex (Kirby, 1802) (Hymenoptera: Apoidea: Halictidae) – European Journal of Taxonomy – 0541: 1 - 43.