APPLE PESTS. 71 



psi), Pepper-and-Salt Moth (Ampliidasys betulariic), 

 Clouded Drab Moth (Ttieniocampa incerta), Green Pug- 

 Moth (ChlorocJystis rectangulata), Common Tortrix Moth 

 (Tortrix ribeana), Apple Leaf -Miner Moth (Lyonetia 

 clerckella), and the Apple-Leaf Bhster Moth (Ornix petio- 

 lelia) either feed on the leaves, buds, or blossoms to a 

 limited extent. Then various weevils (Rhynchites species) 

 also feed on the foliage. Those, however, we have de- 

 scribed in detail are the chief culprits. 



[Photo: H. A. Smith. 

 MUSiSEL SCALE ON AN APPLE. 

 Th-e ecales in rliis caee have attacked the fruit as well as the branches. 



Mussel Scale (Lepidosaphes ulmi). — This is an insect 

 resembling in shape the mussel, hence its name. It is 

 sometimes found congregated in large quantities on the 

 shoots of apple trees, and when so present it does an 

 immense amount of harm by sucking the sap. If one of 

 the scales be removed the adult and young insects will be 

 found ensconced beneath. The outer covering that is 

 visible to the eye is therefore not the insect, but, as just 



