Oak: California gallfly
Oak: California gallfly categories: Oak Oak Insects Ornamental trees Ornamentals revision date: 2022-11-25 04:31 “Oak apples” caused by California gallflyPhoto by: R.S. Byther Biology The gall of this cynipid wasp larvae is the largest and most conspicuous of the galls on oak, achieving a diameter of one to four inches. It is a twig gall […]