#1
Hello,
The first two pictures show a fly I saw in Juli, Heerlen, NL.
The third I made in September, in Germany.
Ben
#3
Hi Ben,
Yes
Chymomyza amoena. It seems this species is spreading through The Netherlands. In "De Kaaistoep" (Tilburg) there seems to be a good population. It would have been easy to collect a few hundred specimens. Sweeping underneath oak trees almost always resulted in collecting several specimens (at least in August and September).
Jan Willem
Okay, I see Paul was a bit quicker

.