Andricus sp. A [Russo lists this species as "related to Andricus tecturnarum" but doesn't specify how it differs.]
Woolly-russet-gall wasp
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Hosts: Quercus arizonica, oblongifolia
Individual larval cells occur beneath the long, light brown, pinkish hairs, which appear scraggly and disarrayed.
”- Russo, Ronald A. : (2021) Plant Galls of the Western United States©