Expansion of knapweed seed head fly (Urophora quadrifasciata) and other selected herbivorous insects on spotted knapweed in Middle Tennessee

This presentation will describe research over the last five years on the occurrence, expansion and population dynamics of knapweed seed head fly (Urophora quadrifaciata) on roadside populations of spotted knapweed (Centaurea stoebe) in Middle Tennessee.  It also will describe population dynamics of other herbivourous insects on these roadside populations of spotted knapweed.