Learn about flies

Hello everyone - I'm new to the group.

Thank you for allowing me to join, John:)

I just wondered if there is a list (with photos if poss) of any UK diptera species that are protected?

Many thanks, Vanessa

Are there any easily available references for this family?

Are the black basicosta and T2, and the bristles on the rear edge of T3, sufficient to make this a male Luclila silvarum?

I've got a female Helina that's keying out confidently to the fratercula/consimilis/vicina couplets in the Fonseca RES key to Muscidae. It's clearly not fratercula, as the hind tibia have no posterodorsals (or scars) and it has only one anteroventral. However, the mid femur have three (slightly postero)ventral near the base, which would seem to rule out consimilis and vicina. I'm therefore at a bit of a loss.

Another one I thought might be easy... will I never learn!   This was on a knapweed in chalk grassland in Bucks on 16/6/21

Any thoughts or pointers please.

Thanks

Two flies that I think should be 'doable' from photos but I need some help please,  both were from damp nutrient poor meadows rich in Dyers Greenweed and a good range of other plants.

Any thoughts welcome

Attached is a photo of a fly taken on 10 June in Trench wood, Worcestershire on Bramble, which we have id'ed to Trixia conspersa. Is that likely to be right? Unfortunately there is no specimen.

Hi, I think that this is a male Argyra maybe diaphona or perplexa? Is it possible to species ID these from photos (at all)?

If so, is it possible to do so with these photos?  Many thanks!