Oak Marble Galls

Oak Marble Galls

Observation - Oak Marble Galls. Description: Hard, brown, woody spheres (approx 3/4 inch to 1 inch across) attached to twigs of oak tree. All galls were smooth surfaced except for one which was more wrinkly. Each sphere had a small hole in it that was maybe an exit hole-?

Hard, brown, woody spheres (approx 3/4 inch to 1 inch across) attached to twigs of oak tree. All galls were smooth surfaced except for one which was more wrinkly. Each sphere had a small hole in it that was maybe an exit hole-?