33 



Brookline, on trees bordering the Newton boulevard. It will be 

 surprising indeed if the insect does not appear in injurious numbers 

 in Boston and vicinity in the course of a few years. * 



Life History. 



The mature beetles pass the winter in various sheltered places, 

 under clapboards, in buildings, etc., in some cases crawling into 

 houses in such great numbers as to cause much annoyance. In 

 this region they emerge from the first to the middle of May and 

 feed greedily upon the elm, eating innumerable shot holes in 



Fig. 1. Different stages of the elm-leaf beetle : a, eggs; b, larva;; c, adult; e, eggs 

 enlarged;/, sculpture of eggs; g, larva enlarged; h, side view of greatly enlarged seg- 

 ment of larva; i, dorsal view of same; ,;, pupa enlarged; k, beetle enlarged; I, portion of 

 wing-cover of beetle greatly enlarged. From Riley, Report Q. S. Dept. Agri., 1883. 



unfolding leaves. Egg-laying commences in a few days and 

 extends over several weeks. Of two female beetles observed by 

 Dr. Felt, one deposited 431 eggs in 27 days, the other 623 eggs 

 in 28 days. The eggs are spindle-shaped, orange-yellow in color 

 and are laid in irregular rows on the undersides of the leaves in 



* Since the above was written the elm-leaf beetle has caused serious damage at 

 Worcester, Hudson, Auburndale, Framingham, Lawrence, Salem and Quincy. 



