Reference

Arne Köhler, Frank Menzel, Karl H. Thunes, Geir E. E. Soli [Søli] (2013): Black Fungus Gnats (Diptera: Sciaridae) in oak canopies: description of Bradysia quercina Menzel & Köhler spec. nov. and new records for Norway – Studia dipterologica – 20: 325 - 331.