Ecology, Taxonomy, and Pest Management of Billbugs (Coleoptera: Curculionidae…

ABSTRACT. Orchardgrass, Dactylis glomerata L. (Cyperales: Poaceae), is a cool season grass, cultivated throughout the United States as a high-value forage crop. Larval feeding by two weevil species (Coleoptera: Curculionidae), the bluegrass billbug, Sphenophorus parvulus Gyllenhal, and the hunting billbug, Sphenophorus venatus vestitus Chittenden, has caused widespread economic damage to orch…