Establishment of urophora affinis on spotted knapweed in pennsylvania, with new eastern U.S. records of U. quadrifasciata (Diptera: Tephritidae)

Jr A G Wheeler
C A Stoops

Published in Proceedings of the Entomological Society of Washington, in 1996, in volume 98, pages 93-99

Date published:1996

BHL: 28254268
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