Flower-Visiting Insects
of Spotted Knapweed
Centaurea biebersteinii (Spotted Knapweed) introduced
(Also known as Centaurea maculosa; the butterfly sucks nectar, while beetle activity is unspecified; information is limited; observations are from Herms, MacRae, Swengel & Swengel, and Williams)
Butterflies
Lycaenidae: Lycaeides melissa samuelis fq (Hm, Sw)
Beetles
Buprestidae: Acmaeodera tubulus (McR); Cantharidae: Chauliognathus pennsylvanicus (Wms)