Vilkamaa, P., J. Salmela, and H. Hippa. “Black Fungus-Gnats in Deciduous Forest Habitat in Northern Europe, With the Description of <i>Bradysia arcula</i> Sp. N. (Diptera: Sciaridae)”. Entomologica Fennica, vol. 18, no. 4, Dec. 2007, pp. 226–231, doi:10.33338/ef.84403.