I learned more about the metalmark moths in South Florida here: https://www.youtube.com/watch?v=nEzuNy5-Mvs&t=28s
There were a lot of them on this single strangler fig (easily 30+) and they seemed to start flying around more as the sun was setting. They look like little orange blurs when they fly (their hindwings are orange).
This strangler fig (Ficus aurea) has since been cut down :-(
Many galls infesting a cypress tree growing at the edge of Lake Miccosukee. Some of the galls had emergence holes (see the two close-up photos); I don't know whether what emerged was the midge or a parasitoid.
Any chance this is Aprostocetus fidius? It was on a cypress twig gall (Taxodiomyia cupressiananassa) on bald cypress (Taxodium distichum). Only noticed when browsing pics large on my computer, so this is a massive crop of a much larger pic (pic 3).
My ID guess is because several websites on biological control of this gall mention 6-7 parasitoids, and A. fidius pic I found online matches what I found.
Taken from flower of Opuntia sp. Picture taken in field on white background