Canada Thistle Stem Gall Fly - Urophora cardui
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Observations in Montana Natural Heritage Program Database
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(Observations spanning multiple months or years are excluded from time charts)
- Additional ReferencesLegend: View Online Publication
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- De Smet-Moens, H. 1982. The insect fauna of Canada Thistle Cirsium arvense (L.) Scop in southern Montana. M.Sc. Thesis. Bozeman, MT: Montana State University. 51 p.
- Additional Sources of Information Related to "Insects"