3-mm gall on upper surface of Q. lobata leaf. Having trouble finding a match in the Russo field guide that occurs on white oaks.
Host tree observed here: https://www.inaturalist.org/observations/182831107
Host tree observed here: https://www.inaturalist.org/observations/182831107
Host tree observed here: https://www.inaturalist.org/observations/182831107
Male and Female