Native parasitoids attacking Urophora affinis Frauenfeld (Diptera; Tephritidae), an introduced biological control agent of spotted and diffuse knapweeds (Centaurea spp.) in the United States

Ronald F Lang
Robert D Richard

Published in Pan-Pacific Entomologist, in 1999, in volume 74, issue 4, pages 223-227

Date published:1999

BHL: 56148061
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