608 STATE BOARD OF AGRICULTURE. 



P. gracilis Marl. Gall-maker on willow leaves, Van Cortland Park, N. Y. 

 (Dyar), Virginia (Marl). 



P. populi Marl. Slight gall-maker and leaf roller on Populus grandidentata, 

 Ft. Lee (Dyar). 



P. terminalis Marl. Slight gall-maker and leaf-roller on smooth willow, 

 Van Cortland Park, N. Y. (Dyar). 



PTERONUS Jur. 



P. ventralis Say. Larva on willow ; " New Jersey " (Cress Coll). 



P. erythrogaster Newn. New York to Maryland. 



P. corylus Cress. Staten Island, VI (Ds), larva gregarious on alder (Dyar). 



P. ribesii Scop. The larva is the common "currant worm," and is found 

 wherever a currant or gooseberry bush grows : sometimes seriously 

 destructive. Hellebore in decoction or dry is a specific. Arsenical 

 sprays may also be used to good advantage before the fruit is too far 

 advanced. 



P. cornelli Marl. Staten Island, V and VI (Ds). 



P. trilineatus Nort. Canada to So. Carolina, larva on locust. 



P. quercus Marl. Larva on white oak, Belleport, L. I. (Dyar). 



P. hyalinus Marl. Larva on white birch, Riverside Drive, N. Y. (Dyar). 



P. thoracicus Harr. Larva on Amelanchier ; probably occurs in New Jersey 



(Dyar). 



P. vertebratus Say. Larva on willow and poplar, Flatbush, L. I. (USNM) 



P. integer Say. "New Jersey" (Cress Coll) ; larva on. oak, Quercus tinctoria 

 (Dyar). 



P. mendicus Walsh. Larva on willow, Central Park, N. Y., Washington, D. 

 C. (Dyar). 



P. longicornis Marl. Flatbush, L. I. (U S N M). 



P. carpini Marl. Fort Lee, larva on hop-hornbeam (Dyar). 



P. ostryse Marl. Fort Lee, larva on blue beech (Dyar). 



NEMATUS Jur. 

 N. chloreus Nort. Bellport, L. I , on Quercus coccinea (Dyar). 



AMAURONEMATUS Konow. 

 A. luteotergum Nort. Larva on alder (Dyar). 



CRCESUS Leach. 

 C. latitarsus Nort. Larva on birch, gregarious ( Dyar) . 



