Publications for:

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

found 3 publications:

2003

Attack of Urophora quadrifasciata (Meig.) (Diptera: Tephritidae) a biological control agent for spotted knapweed (Centaurea maculosa Lamarck) and diffuse knapweed (C. diffusa Lamarck) (Asteraceae) by a parasitoid, Pteromalus sp. (Hymenoptera: Pteromalidae) in Michigan
The Great Lakes Entomologist (2003) 36 (1-2). p. 16
pestinfo wiki

2001

Distribution of Urophora affinis and U. quadrifasciata (Diptera: Tephritidae) for biological control of spotted knapweed (Centaurea maculosa) and diffuse knapweed (Centaurea diffusa) in Michigan
The Great Lakes Entomologist (2001) 34 (1), p. 31
pestinfo wiki

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
pestinfo wiki