Publications for:

pest = Centaurea diffusa (weed)
country = U.S.A. (mid N)

found 2 publications:

1997

Urophora affinis and U. quadrifasciata (Diptera : Tephritidae) released and monitored by USDA, APHIS, PPQ as biological control agents of spotted and diffuse knapweed
The Great Lakes Entomologist (1997) 30 (3), 105-113
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1996

Spread of Puccinia jaceae var. diffusa
Phytopathology (1996) 86 (11 suppl.), S81
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