PLATE A 

 I, Twig showing condition of buds at time of hatching; 

 2, eggs on a small section of apple twig; 3, single egg (x33) ; 4, 5, 

 6 & 7, represent the first four stages of the nymph or immature 

 insect (x33) ; 8, the fifth stage (x20) ; 9, adult female, summer 

 coloration (xl2) ; 10, the same, autumn coloration; 11, blossom 

 cluster infested with nymphs and showing honey dew and wax 

 secreted by insect; 12. greatly enlarged portion of young shoot, 

 showing nymphs and one adult in place. 



