. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). THE BRONZE BIRCH BORER Agrilus anxius Gory Order Coleoptera ; family Buprestid;e The birch trees with their graceful habits, their slender, often pendu- lous branches, and their picturesque trunks are conspicuous features of any landscape. The European white birch in its various weeping and cut-leaved forms has been extensively planted in American city parks and private lawns. Its artistic beauty, with its silvery stemmed branches and fluttering leaves &
. Annual report of the Agricultural Experiment Station. Cornell University. Agricultural Experiment Station; Agriculture -- New York (State). THE BRONZE BIRCH BORER Agrilus anxius Gory Order Coleoptera ; family Buprestid;e The birch trees with their graceful habits, their slender, often pendu- lous branches, and their picturesque trunks are conspicuous features of any landscape. The European white birch in its various weeping and cut-leaved forms has been extensively planted in American city parks and private lawns. Its artistic beauty, with its silvery stemmed branches and fluttering leaves " floating at the discretion of the winds " makes the white birch a constant source of delight both in summer and winter. As com- pared with the elm or maple, the white birch is considered a short-lived tree, but they frequently survive to grace a landscape for thirty years or more. It is with much regret, therefore, that this Experiment Station finds it necessary through this bulletin to announce to lovers of these beau- tiful white birches that a deadly insect enemy has recently ap- peared which is fast destroying these trees in city parks and on home grounds. Hundreds of the finest specimens of these graceful trees in Buffalo, (see frontis- piece) Ithaca and other cities and towns of New York have suc- cumbed to this enemy within the past eight years. About half of the score of white birches on the Cornell University Campus (Fig. 34), some of them over thirty years old, have been killed by the insect within three years ; and several of the remaining trees are infested and will not survive more than a year or two. These facts demonstrate the seriousness of the situation, and demand that city authorities and private own- ers of these valuable trees ac- 'P^p. yt.—a, Characteristic rusty brown s{wts . . ... on bark over tlic borer ui autumn, natural quamt themselves with the de- size; b, birch branch shoiving the peculiar tails of the work and life-habits r'dgcd effec
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