THE INSECTS OF NEW JERSEY. 569 



They hibernate as larv^se or pupae, rarely as images. With few exceptions 

 the species in the following list have been bred or observed in Essex 

 County, and examples will be found wherever the food plant occurs. 

 P. fitchella Clem. Common, larva on oak, mining underside of leaves. 

 P. trinotella Braun. One specimen, the type, Essex Co. Park IV, 26. 

 P. quercialbella Fitch. Larvae in tentiform mines on under side of oak 



leaves, g. d. 

 P. argentifimbriella Clem. G. d., larva in tentiform mines on underside 



of oak leaves. 

 P. lucidicostella Clem. Larva mines underside of maple, "Acer sacchar- 



inum," not common but g. d. 



P. obscuriocostella Clem. The larva mines the underside of the leaf of 

 ironwood, "Ostrya virginica." 



P. ostryaefoliella Clem. As in preceding, but the mine is much more 

 wrinkled and usually near the margin of the leaf. 



P. kearfottella Braun. Larvae make narrow mines on underside of chest- 

 nut leaves at Montclair, usually along a vein. 



P. gemmea F. & B. Larva mines upperside of leaves of locust. 



P. morrisella Fitch. Larva makes whitish mines on underside of leaves 

 of "Amphicarpa." 



P. uhlerella Fitch. Larva mines under surface of leaves of false indigo. 



P. robiniella Clem. Common, larva mines leaf of locust. 



P. auronitens F. & B. Larvae make rounded, flattened mines on under- 

 side of leaves of alder, "Alnus serrulatus." 



P. scudderella F. & B. Mines on the underside of willow leaves. 



P. salicivorella Braun. The type was bred from a mine on the under- 

 side of willow leaf in Essex Co., issued VII, 19. 



P. malimalifoliella Braun. Larvse make small, teniform, much wrinkled 

 mines on underside of apple leaves at Montclair. 



P. crataegella Clem. Larva in mines on underside of leaves of black- 

 thorn, apple and wild cherry; Gloucester Co. IV (Haim). 



P. propinquinella Braun. A common underside miner ou wild cherry. 



P. populiella Cham. Larva in a very small tentiform mine on underside 

 of aspen leaf. 



P. aeriferella Clem. Makes small mines on underside of oak leaves. 



P. obsoleta F. & B. Described from flown specimen taken in Mass.; 

 will be found in New Jersey; nothing known of life history. 



P. argentinotella Clem. Larva mines underside of elm leaves. 



P. basistrigella Clem. Larva mines the underside of oak leaves. 



P. lucetiella Clem. Larva mines the underside of leaves of basswood. 



P. ostensackenella Fitch. Larva makes a yellow blotch mine on upper 

 or lower surface of leaf of locust. 



P. tritaenianella Cham. Larvae make rather large tent mines on upper- 

 side of leaves of ironwood. 



