Identificaciones de morcutt

I observed a number of small bees buzzing very close to the ground and only occasionally landing for just a second or two. But it looked like one was writhing around madly either on its own or wrestling with another insect (not great eyesight so I rely on what I can photograph with my camera).

This insect was originally thought to be the same as another 5 photos I captured but it might not be so I've removed it from the original observation and uploaded it on its own.

The original observation here:
https://www.inaturalist.org/observations/214046085
has a lot of comments in it. Visit that for more info.