knapweed gall fly (Urophora affinis) in EDDMapS Representative Photos

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knapweed gall fly (<em>Urophora affinis</em>) adult(s)

Jim Story, Montana State University, Bugwood.org

knapweed gall fly (Urophora affinis) adult(s)

knapweed gall fly (<em>Urophora affinis</em>) adult(s) on spotted knapweed (<em>Centaurea stoebe</em>)

Laura Parsons, University of Idaho, PSES, Bugwood.org

knapweed gall fly (Urophora affinis) adult(s) on spotted knapweed (Centaurea stoebe)

Eric Coombs, Oregon Department of Agriculture, Bugwood.org

USDA Forest Service - Coeur d'Alene Field Office , Bugwood.org