Carbonifera goldenrod gall midges (Asteromyia carbonifera). I'd love to know more about the purple pigment. Is it produced by the fungus (Botryosphaeria dothidea) that is farmed by the midge? Or by the plant, at the direction of the midge? 🌿 #diptera #flies #fungi #galls #cecidomyiidae #insects

Thanks Jessica! We reared plenty of platys from Asteromyia if you'd like to take a look someday 👀

These galls make neat circles on their host: carbonifera goldenrod gall midge.

#dslr #nikon #September2025GallWeek #gallweek #asteromyia #asteromyiacarbonifera