#2
I think these are
Heterocheila buccata (Dryomyzidae, Helcomyzinae) - another seashore specialist. If you can pick out one or two of these for the gallery, that would be very useful! (But we had better wait for confirmation from someone before posting them!

)
#3
Great !
Should have its own family, Heterocheilidae, according Paul Beuk's Checklist and
Fauna Europaea.
Now, I'd wish to know what
Malacomyia sciomyzina looks like...
Greetings.