4 CIRCULAR 10 6, U. S. DEPARTMENT OF AGRICULTURE 



the twigs that they subsequently break, with the weight of the fruit 

 out beyond them. 



FOOD AND OVIPOSITION PLANTS 



In the orchards of the Pacific Northwest the tree hoppers feed al- 

 most exclusively upon alfalfa, though occasionally upon sweet clover. 



Figure 2. — Apple twigs showing the characteristic shaggy, roughened appearance 

 due to the oviposition wounds of the green-clover tree hopper : A, Natural size ; 

 B, X 3 



They are known, however, to feed upon grass, red clover, and other 

 forage plants. In rare cases the newly hatched nymphs have been 

 seen feeding upon apple and pear buds, wild mustard, and dande- 



