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Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

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TaxonomyBrowseInfoImagesLinksBooksData
Key to American Insect Galls
By Ephraim Porter Felt
New York State Museum Bulletin, No. 200. , 1917
Cite: 839867 with citation markup [cite:839867]
Freely available at this Google Books link.

Although quite old, and likely with much out-of-date nomenclature...this reference has a large number of useful line drawings and photos (including 16 plates w/ 9 photos each = 144 photos at the end). The name of this work is rather misleading...as there's no "key" per se. Instead, the galls are organized by plant families of their hosts, listed there with (usually very) brief comments on rearing records, perhaps some minimal descriptive info, and abbreviated bibliographic references.