Canada thistle stem-gall fly (Urophora cardui ) on Canada thistle (Cirsium arvense ) - 0024026

Canada thistle stem-gall fly
Urophora cardui (Linnaeus, 1758)

Host: Canada thistle (Cirsium arvense (L.) Scop.)
Descriptor: Damage
Description: gall in stem
Image type: Field
Image location: United States

Photographer Information

Name: Norman E. Rees
Organization: USDA Agricultural Research Service - Retired
Country: United States

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Image Number: 0024026

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Image Citation:(?) Norman E. Rees, USDA Agricultural Research Service - Retired, Bugwood.org

Node Affiliation: University of Georgia

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Image uploaded on Monday, January 01, 1990
Image Information last updated on Thursday, May 19, 2011