ii4 REPORT OF NEW JERSEY STATE MUSEUM. 



P. caryae-foliae Fitch. Makes galls on leaves of hickory; common 

 throughout the Watchung Mts. 



P. caryae-venae Fitch. Forms pleats or galls along the veins or ribs of 

 hickory leaves; sometimes locally common. 



P. vastatrix Planch. The grape Phylloxera; occurs throughout the State, 



but nowhere in destructive form. 



The other names occurring in the previous edition do not appear to be 

 sanctioned by description, and are therefore omitted. It is certain, how- 

 ever, that there are several additional species in the State. 



CHERMAPHIS Mask. (CHERMES.) 



C. abieticolens Thos. Edgewood (U S Ag) ; found locally on spruce. 

 C. laricifolise Fitch. Common locally on American larch or tamarack. 

 C. pinicorticis Fitch. Jamesburg (Coll), and throughout the pine bar- 

 rens; sometimes quite common. 



Sub-family PEMPHIGIN^. 



TETRANEURA Hartig. 



T. ulmi DeG. "Under side of leaves' of European and American elms. 



HORMAPHIS O. S. 



H. hamamelidis Fitch. Makes galls on leaves of witch hazel, N. J. (Bt). 

 H. spinosus Shimer. Makes gall on fruit buds of witch hazel, N. J. (Bt). 



PEMPHIGUS Hartig. 



P. acerifolii Riley. Found throughout the State on the underside of 

 maple leaves, and sometimes abundant at New Brunswick. 



P. imbricator Fitch. Occurs on the leaves of beech, and is the "Schi- 

 zoneura imbricator" of the previous edition. 



P. populicaulis Fitch. Makes galls at junction of stem and leaf of "Popu- 

 lus monilifera," Passaic (Bt) ; also elsewhere in State. 



P. populiglobuli Fitch. Also found on "Populus" at Passaic (Bt). 



P. populivenae Fitch. Makes galls on veins of poplar leaves. 



P. rhois Fitch. Common on leaves of sumac (Bt) ; throughout the State 



(Sm); Caldwell (U S Ag). 

 P. tessellata Fitch. The "alder blight." Sometimes very common locally, 



in September and October, forming conspicuous masses. 

 P. vagabundus Walsh. Sometimes locally common on poplar. 



