Injects: Affecting PorevS:t Tree^. 



Bv E. P. FELT, D. Sc, State Entomologist. 



NEW YORK STATE MUSEUM. 

 UNIVERSITY OF THE STATE OF NEW YORK. 



THE following brief account of various insects injurious to certain forest trees 

 is based upon woik of the writer extending over three seasons. Con- 

 siderable of tlie collecting was done in the Adirondack's, in the vicinity 'of 

 Saranac Inn and much more at Karner, N. Y., which is approximately half way 

 between Albany and Schenectady. The white pines at Bath-on-the-Hudson, just 

 across the river from Albany, were also closely watched, and a number of outbreaks 

 in various portions of the Hudson river valley were investigated. The last three 

 years appear to have been exceptionally favorable for certain bark and wood borers 

 (see plates i and 2) and consequently a considerable proportion of the observations 

 relate to these insects. More detaileil notices of these injurious species, together 

 with many others, have been prepared for publication and will be issued as a separate 

 work. The illustrations are nearly all original and most of the process figures are 

 reproductions of photographs taken by the writer. Due acknowledgment should be 

 made to Dr. A. D. Hopkins, now connected with the United States Department of 

 Agriculture, who kindly determined the bark and wooci borers or Scolytids noticed 

 in this paper. 



Insects Affecting tl)e Pine. 



The pine is one of our most valuable forest trees, antl is unfortunately becoming 

 altogether too scarce in many sections of the State. Much of this is undoubtedly 

 due to many drafts made uijon it for commercial ])urposes, but a considerable 

 number of trees are ruined by various insect enemies. This has been speciall}' true 

 in the last three or four years, when several species of bark borers ha\'e been excep- 

 tionally abundant and have undoubtedly killed a gi'eat many pines in the Hudson 

 and Mohawk river valleys, and probably, in other sections of the State, It is 

 proposed at tliis time to give our observations, together with brief accounts, of some 



of the more injurious species affecting these trees and their methods of work. 



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