| colonization of artificially stressed black walnut trees by ambrosia beetle, bark beetle, and other weevil species (coleoptera: curculionidae) in indiana and missouri. | thousand cankers disease (tcd) is a new disease of black walnut (juglans nigra l.) in the eastern united states. the disease is caused by the interaction of the aggressive bark beetle pityophthorus juglandis blackman and the canker-forming fungus, geosmithia morbida m. kolarik, e. freeland, c. utley & tisserat, carried by the beetle. other insects also colonize tcd-symptomatic trees and may also carry pathogens. a trap tree survey was conducted in indiana and missouri to characterize the assembl ... | 2015 | 26314028 |