Anthomyiid Fly
Sun 2018-10-28 
A male Emmesomyia socia (Diptera:Anthomyiidae). Identified using the 2017 draft keys of Michael Ackland.
A close-up of the gentialia:

And a posterior view of the same:

Specimen take in Whiteknights Park, Reading, UK on 2018-06-30.







