Posted by victorengel on 07-04-2021 04:39
#1
Almost right away when I posted this to iNat, I got a suggestion that it was
Boreothrinax. Indeed, that's what it looks like, but it's much bigger than
B. maculipennis, which I get regularly. Could it be
Sphecomyiella? Here's a rough comparison of the size of this fly compared to
B. maculipennis.

Posted by victorengel on 07-04-2021 13:39
#3
Sorry - Austin, Texas, USA
Posted by Tony Irwin on 07-04-2021 16:45
#5
S. valida looks to be a good match, but I'm no expert in this family, so best to wait for another opinion.