Spania nigra, is a species of 'snipe flies' belonging to the family Rhagionidae.
It is a Palearctic species with a limited distribution in Europe Fauna Europaea
Description Tiny black flies without a true style, but the ventral margin of the last antennal segment is produced into a pseudostyle. Vein M3 usually does not reach the wing-margin. Metapleura bare. Van Veen Key Identification. Oldroyd, H., 1969 Diptera Brachycera: Tabanoidea and Asiloidea (Handbooks for the Identification of British Insects 9/4) Royal Entomological Society, London Lindner, E., 1924-38, Die Fliegen der Palaearktischen Region 24 : (Brachycera). Stuttgart. Biology The larvae are thallus-miners of thallose liverworts.
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