Oak Marble Gall Wasp (<i>Andricus kollari</i>)
<a rel="nofollow" class="external text" href="https://www.inaturalist.org/users/1236256">Stephen James McWilliam</a>
CC BY 4.0
<a rel="nofollow" class="external free" href="https://www.inaturalist.org/photos/91404895">https://www.inaturalist.org/photos/91404895</a>