336 



Insect Pests. 



The insects appear in early June in very small numbers, and soon 

 commence, if the weather is fine, to lay their eggs. 



Each ovum is de- 

 posited in a semicircular 

 slit cut by the " saws " 

 of the female on the 

 underside of the leaf, 

 but now and then it 

 .seems to be laid on the 

 upper surface. A small 

 pale spot marks the 

 point of insertion of 

 the ovum. 



The egg, which is 

 white and oval, batches 

 in seven days. The 

 young larva escapes in 

 most circumstances on 

 the upper surface of 

 the leaf. 



It is at first ])ale, 



and after a few days 



a dark greenish slime 



ouzes from its skin. 



Four moults of the skin seem to take place. During most of their 



life they are bottle-green in colour, dirty jiale yellow below, very 



[F. Kile I 



(The one on the 



lalit cat its last sta 



LUGWORMS ON CHERRY LEAF. 



shiny and disgusting in appearance ; the larv;c swell out on the 

 I'ront end; the head is liidden in a kind of hood-like mass formed 



