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Gall formed by the cypress twig gall midge on bald cypress (Taxodium distichum).
Photo credit: Albert (Bud) Mayfield, USDA Forest Service, Bugwood.org

Multiple galls formed by the cypress twig gall midge on bald cypress (Taxodium distichum).
Photo credit: Chazz Hesselein, Alabama Cooperative Extension System, Bugwood.org

Damage caused by cypress twig gall midge
Photo credit: Lacy L. Hyche, Auburn University, Bugwood.org