ATTACKING THE LEAVES, 



169 



latter half of June and in July, and deposits its eggs, some- 

 times on the plum, but more frequently on the willow and 

 poplar. 



The Qgg is less than one-twenty-fifth of an inch in length, 

 globular in form, and beautifully reticulated, as shown in Fig. 



Fig. 179. 



179, where a represents the egg highly magnified. It is cov- 

 ered with short, transparent, hair-like spines. One of the 

 hexagonal indentations, Avith its projecting filaments, is shown, 

 much enlarged, at d. At first it is pale yellow, but as the 



Fig. 180. 



larva within develops it becomes pale gray ; the o^gg is gen- 

 erally laid on the under side of a leaf, near the tip, as seen 

 at c in the figure. In a few days it hatches, and in about a 

 month the larva attains its full growth, when it presents the 

 appearance shown in Fig. 180, at a. 



It is about an inch and a half in length; the head is pale 



