This volume treats dance flies of the genus Empis (Diptera, Empididae) of Fennoscandia and NW Europe. Altogether, 64 species in 11 subgenera are recognized. Eac

This work is the third of a projected group of six volumes on Empidoidea (Diptera, Brachycera) of Fennoscandia and Denmark, and the first concerning the true Em

Many species of Drosophila are very important laboratory animals in almost all fields of biological research, because of the ease of culturing on artificial med