THE INSECTS OF NEW JERSEY. 



Sub-family 



COLOPHA Monell. 



C. ulmicola Fitch. Makes the well- 

 known cockscomb gall on elm; 

 locally and seasonally common 

 throughout the State. 



SCHIZONEURA Hartig. 



S. corni Fabr. A woolly louse on 

 various species of dogwood, but 

 also found on a variety of 

 grasses and other plants. 



S. lanigera Hausm. The "woolly 

 apple-louse." More or less com- 

 mon throughout the State, but 

 never really injurious. It 

 forms galls on roots, and 

 clusters in masses about 

 wounds on the trunk and 

 branches. In the latter condi- 

 tion it is easily reached by the 

 kerosene emulsion. Root treat- 

 ments have not hitherto been 

 necessary in New Jersey. 

 Occurs also on other plants 

 and trees, and is the "ameri- 

 cana" of the last edition. 



S. rileyi Thos. (ulmi Riley.) A 

 woolly louse on American elm. 



Fig. 46 .Woolly apple louse; injury to the, 



roots is shown at a; adult at c, showing 



the woolly fibres, much enlarged. 



Sub-family 



PHYLLAPHIS Koch. 

 P. fagi Linn. Trenton (U S. Ag) ; on beech. 



LACHNUS Burm. 



L. abietis Fitch. Occurs on spruce in the Appalachian and Highlands 



areas. 



L. alnifoliae Fitch. Occurs on leaves of alder. 

 L. laricifex Fitch. Occurs on the American larch or tamarack. 

 L. quercifoliae Fitch. On the leaves of oak. 

 L. salicelis Fitch. Found locally on willows. 

 L. strobi Fitch. A feeder on white pine; sometimes locally common. 



