---

I would be very grateful for a second opinion on the identification of this small black fly found on 26 Aug 2014 on bushes near a stream at Martlesham, East Suffolk, TM252473.

Face about 1mm across, wing about 3.5mm long.

This was my reasoning... all the characteristics are visible on the photos, I think.

Using RES Vol10.6 Scuttle Flies (RHL Disney, 1983)

Key to Genera (p15)
1 With wings and halteres.
4 No transverse combs of stoutish hairs on dorsal face of hind tibia.
6 Vein 3 with at least 5 fine hairs along its dorsal face.
7 Tibia with one or more isolated bristles in upper two-thirds, as well as apical bristles.
8 Hind tibia with a dorsal, longitudinal palisade-like row of stoutish hairs in addition to isolated bristles and scattered hairs. Vein 3 unforked --> Borophaga (p 19)

1 Tip of vein 3 doesn't form a swollen distal portion.
4 Ocellar triangle expanded into an elevated protruberance, and anterior ocellus transversely elongated so that it is at least 3x broader than high. Hind tibia with a strong anterior bristle in upper half. Vein 3 unforked.
5 Elevated protruberance bearing ocelli broader (fig 23). Front tibia with at least 2 postero-dorsal bristles. In both sexes the cerci are broadly ovoid and covered in densely-crowded fine hairs --> incrassata

Comments, please.

Martin