REPORT OF THE ENTOMOLOGISTS. 



PART I. 



I. THE COTTONWOOD LEAF BEETLE.* 



Lina scripta Fab. 



Y. H. Lowe. 



SUMMARY. 



During- the past four years the growers of basket willows in 

 central New York have suffered serious loss from the depreda- 

 tions of the cottonwood leaf beetle. 



In both the larval and the mature stages, the insect attacks the 

 willows, feeding upon the young leaves and tender bark near the 

 tips. This injury to the tips causes the willow " whips ' : to 

 branch, thus rendering them worthless for basket making pur- 

 poses. 



It lives above ground during all of its transformations. The 

 eggs are laid upon the leaves and the larva? feed upon the more 

 tender tissues. The pupa? are attached to the under sides of the 

 leaves or to the bark. The mature insects, beetles, are active and 

 fly readily from one field to another. The winter is passed in the 

 adult stage, the beetles seeking shelter under stones, logs or any 

 convenient rubbish. 



On the experimental field the willows were successfully pro- 

 tected by three applications of green arsenite, 1 pound to 100 gal- 

 lons of water. 



•Reprint from Bulletin No. 14:"!. 



