March Fly from UK

Subject:  Large Fly?
Geographic location of the bug:  Darlington, County Durham
Date: 07/30/2019
Time: 07:30 AM EDT
Your letter to the bugman:  Hello there. Can you please help me identify this fly?
I found it in the kitchen after a party and it appeared to be sucking the surface of the cake lid.
I lifted it outside and it is still there this morning.
Is it friend or foe? I’d like to help it if needs be.
How you want your letter signed:  Victoria

March Fly

Dear Victoria,
This is a female March Fly in the family Bibionidae, a group sometimes called St. Mark’s Flies in the UK, though that common name might refer to only a single species in the genus Bibio.  Based on images posted to NatureSpot, your individual might be
Bibio johannis, or possibly Bibio pomonae, the Heather Fly.

March Fly

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