The face is strongly protruding downward, with the anterior oral margin extending well beyond the tubercle.

(see Figure 1 and general anatomy) The legs are dark, but with short tip of femora and connection of the tibiae pale.

The halter is yellow, and the wing is completely microtrichose (microscopic hairs).

Palearctic: Fennoscandia south to Iberia, the Mediterranean basin, Ireland eastwards through Europe into Turkey and Russia then Siberia and the Altai.

[10][11][12] Habitat: fen, humid, grassland (to above 2,000 metres or 6,600 feet in the Alps), moorland and taiga.