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Westcliff-on-sea, Essex, UK
22/3/07
3mm
Basking on a fence in my garden

I've used the key in the manual to palearctic diptera.
Can anyone check that I've interpreted it correctly and suggest a species?

Eye bridge and nodiform flagellomeres make it Psychodinae
Brownish with wings held horizontally make it Telmatoscopini

I think all the trichia on the wing arise from the veins and none from the membrane which excludes Trichopsychoda

This leaves 3 possible genera (4 species) in the UK: Feuerborniella obscura, Philosepidon humeralis, Threticus balkaneoalpinus (whose name makes it seem unlikely), and Threticus lucifugus

As the individual is female these genera cannot be distinguished.
But are any of them much more likely than the others in SE England in March?

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"Brownish with wings held horizontally make it Telmatoscopini"

I am not absolutely sure, whether this is sufficient to narrow it down to Telmaotscopini. But it looks more like belonging to Telmatoscopini than Pericomini.

Clogmia albipunctata is the common drain fly, but this individual does not seem to belong to that species.