On compost bin. ~ 4 mm It's warmed up a bit and has been raining lately. Lots of small flies around the compost. Here's one that I found today that I think is a new family in the yard. Looks like a fungus gnat to me (Mycetophilidae), but I could be wrong about that. I captured one to ID later. The last photos were taken after capture, freezing, and point mounting. Seemed to key out to subfamily Mycetophilinae, genus Anatella.
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Observed on 2 Mar 2022.