Ambrosia trifida, Ambrosia psilostachya, Helianthus tuberosus, Helianthus hirsutus, Eupatorium drummondii, Eupatorium maculatum, and Eupatorium alba. Also recorded from Chrysanthemum sp., Silphium, "artichoke", Achillea, Cercis occidentalis, strawberry, Salix sp., Verbesina, Quercus virginiana, Bidens pilosa, and cabbage. (5) Asteraceae (6)
Print References
Karren, J. 1966. A revision of the genus Exema of America north of Mexico (Chrysomelidae, Coleoptera). University of Kansas Science Bulletin 46: 647–695. (5)