276 THE INSECT WOELD. 



the morning you can hear the noise made by the caterpillars 

 while eating. As they increase in size every day, the damage 

 they do goes on increasing, and has not reached the maximum 



Fig. 290. The Vine Pyralis in its three states. 1. Leaf with batches of eggs laid upon it. 

 2. Batches of recently laid eggs. 3. Eggs in which caterpillars can be perceived. 4. Batch 

 of epgs from which the caterpillars have already emerged. 5. Small caterpillars hanging 

 by threads. 6. Leaf with the chrysalis. 7. Caterpillar. 8. Moth. 



of intensity till the moment when the caterpillars are about to 

 change into chrysalides. They are then three quarters of an inch 

 long and of a yellowish green colour. 



From the 20th of June to the 10th of July, they seek shelter 



