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Vilkamaa, P., Salmela, J. and Hippa, H. 2007. Black fungus-gnats in deciduous forest habitat in northern Europe, with the description of <i>Bradysia arcula</i> sp. n. (Diptera: Sciaridae). Entomologica Fennica. 18, 4 (Dec. 2007), 226–231. DOI:https://doi.org/10.33338/ef.84403.