The Introduction of a European Scolytid (the Smaller Elm Bark-Beetle, Scolytus Multistriatus Marsh) Into Massachusetts

J. W. Chapman
1910 Psyche: A Journal of Entomology  
The Scolytidae are most generally known as bark-borers and consequently many entomologists have given the name of bark-beetles to the entire group. They are a very important group of insects in as much as they are very nearly all tree-feeders. For convenience they might be put into two classes, those that attack our conifers and those that work almost exclusively on our deciduous trees of the forest and shade varieties. We have found from experience in past years just how important economically
more » ... are the beetles of the class that infest our conifers, since they have caused a loss of several millions of dollars yearly to different parts of our country. It looks now, from the bark-borer which has recently attacked our elms, as though we were going to have an opportunity to learn of the second class of beetles in the same manner. Europeans have had this problem confronting them for years and it has proved to be one of the most serious with which they have had to deal, because many of these beetles have become such exclusive feeders that they will attack only one kind of tree. In Germany the most destructive species to elms is the large Elm bark-borer, Scolytus geoffroyi Goetze or the "Grosser Ulmen-Splintkiffer" of which Eichhoff gives a good account. He reports that closely associated with it and occurring on the same trees in a peculiarly neighborly or almost symbiotic fashion is the "Kleiner dichtgestreifter Ulmen-Splintkiifer" (Scolytus multistriatus). Just what this relationship signifies other than a social tendency of these insects one can hardly say. These two species confine their attacks chiefly to elm trees and considered together they are among the most dreaded pests in elm growing districts. In France the parks and boulevards of
doi:10.1155/1910/76129 fatcat:24kismxzzzatfmeebxrlvqe66i