I found three females of a Dolichopodid beating a very dense shrub in a garden in North Wiltshire on 21 December. They all have a faint but definite brown spot in the forewing, unfortunately this does not show up very well in my photo! Using the out of print handbook available on the RES website, they key quite confidently to Syntormon macula. There was also a male Syntormon but this lacks the brown spot.
is it possible to confirm from my photo? Thanks in advance for any help.
Antony