Callirhytis furva

On October 1, 2020, I posted a BYGL Alert titled, “Are Oaks Raining Tribbles?”  The Alert focused on small, fuzzy, tan to reddish-brown to deep-red leaf galls detaching from oaks in Ohio, primarily in the northern part of the state.

Last year, on October 1st, I posted a BYGL Alert about small, fuzzy, reddish-brown to deep-red galls appearing on oaks in northern Ohio. The sheer number of the fuzzy oak leaf galls last year coupled with their alien appearance drew the attention of landowners as well as the news media once the galls started detaching from the oak leaves to rain down on sidewalks, decks, and parked cars.

Curtis Young (OSU Extension, Van Wert County) has regaled participants of our weekly BYGL Zoom Inservice with pictures of fuzzy, deep-red leaf galls on red and pin oaks for a couple of weeks. Ann Chanon (OSU Extension, Loraine County) also showed the group pictures of the galls taken on an oak in a landscape in her county.