27 



the soft, yellow insect beneath, which indicates the existence of 

 living scales on the trees. 



These scales are often 

 found on the fruit (Fig. 1), 

 and when present in large 

 numbers they prevent the 

 full development of the fruit, 

 causing it to crack or fall 

 from the tree, or render it 

 unsalable. 



The mature male is very 

 small, and supplied with two 

 well-developed wings. It is 

 shown greatly enlarged in 

 Fig. 3, the natural size being 

 indicated by the crossed lines 

 in the small circle below the 

 right wing. 



Early in June, in this 

 State, the young crawl out 

 from beneath the scale and 



spread over the trees. They appear like moving points of a yel- 

 lowish color, and it is very difficult to distinguish them with the 



Fig. 2. — San Jose scales of natural size on 

 an apple branch; scales somewhat enlarged 

 on apple bark to the left above. 



Fig. 3. — Male insect of the San Jose scale, greatly enlarged. 



unaided eye. Fig. 4 represents the insect at this stage of its 

 existence very much enlarged, with its three pairs of legs and one 



