Today's insects for ID help if poss

[Dillybythesea]

As Africa was saying yesterday, there seem quite a few insects about, on sunny days like today. I've read that you can expect them right through winter, so today's Bombus terrestris, 7-spot ladybird, Episyrphus balteatus x 4and Eristalis tenax f might be expected, but I wondered what this mating pair might be, a bit like small Bibio marci?
Then this fast moving (ie badly shot) fly...
and this fly with (what seemed to me) unusual venation (if that's the word)

and this fly - seeming more colourful
and lastly is this a Gorse Shieldbug, please?

[Anomalous]

The mating pair of Bibionids are interesting. Unfortunately, the front tibiae are not in focus, and that is where an identification starts, for these flies. Firstly to establish whether they are Bibio or Dilophus, then to start to narrow the species down. See if you can find them again and get a picture of the front legs, plus some other angles!

Ian

[Dillybythesea]

Thanks for the info Ian. I shall definitely have another look tomorrow then, and try to get the front tibia!

[oxycera]

Thr last fly is the common dung-fly and the one before that a muscid, Helina evecta I suspect.

[Jason Green]

The second fly is a Sepsid/Ensign-fly - suspect Sepsis sp., and the last bug is correct of course.

[Dillybythesea]

Thank you very much John and Jason - v helpful steers, as ever! I think I'd better put dung fly as my default in future and take it from there.

I always google the answers you give and try to make sensible notes; and with 'ensign fly' I picked up a lot of useful stuff on flag etiquette as well.

Thanks again, Rhona