Spania nigra

Spania nigra, is a species of 'snipe flies' belonging to the family Rhagionidae.
It is a Palearctic species with a limited distribution in Europe

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.

Biology

The larvae are thallus-miners of thallose liverworts.