Entomologische Berichten

CC BY 3.0 NL ("Naamsvermelding")

Nederlandse Entomologische Vereniging

A. Barendregt. (1983). Syrphus nitridifrons Becker, 1921, from the Netherlands, with description of the male, and a key to the European Syrphus species (Diptera: Syrphidae). Entomologische Berichten, 43(4), 59–64.