These galls are usually found low on the main trunk of a smallish tree or else on branches near the ground. The galls persist for some time after the emergence of the wasps and parasitoids. The galls shown here are very old.
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<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/75001205@N02/8638662010/">Andricus testaceipes (agamic generation)</a>