THE IN'SECTS OF NEW JERSEY. 



433 



feed on a large variety of forest trees, including many conifers, and 

 are sometimes found as late as mid-September. 



CITHERONIA Hbn. 



C. regal is Fab. Generally distributed, usually rare, June to August. 

 The formidable looking larva, which has been called the "hickory 

 horned devil," feeds on hickory, walnut, butternut, ash, persimmon, 

 sweet gum and other trees; examples occurring until late Septem- 

 ber. 



ADELOCEPHALA H. S. 



A. bicolor Harr. Lake Hopatcong (Pm); a single example on the beach 

 near Sandy Hook, some years ago. The fact that it has not been 

 taken since by the many collectors who have scoured the State raises 

 a doubt as to the correctness of the identifications. The larva is 

 reported as feeding on "Gleditschia." 



ANISOTA Hbn. 



A. stigma Fab. Reported from all sections of the State in July and 

 August and sometimes rather common. The caterpillar feeds on 

 oak, hazel and chestnut, and is found until mid-September. 



A. sanatoria Sm. & Abb. Occurs from June to August throughout the 

 State. The larva is the common "oak-worm," which is sometimes 

 locally abundant and destructive. I have seen acres of oak scrub 

 almost defoliated in South Jersey, and occasionally larger trees are 

 badly eaten; but no permanent injury is caused, and the natural 

 enemies of the species speedily regain control. 



A. virginiensis Dru. Also 

 quite generally dis- 

 tributed but much less 

 common than the pre- 

 ceding. Flies in June 

 and July, and the 

 larva is also an oak 

 feeder. 



DRYOCAMPA Harr. 

 D. rubicunda Fab. Occurs 



throughout the State, 

 but is somewhat local 

 and rarely abundant, 

 from May to July. 

 The caterpillars are 

 sometimes quite num- 

 erous on soft maple, 

 and more rarely feed 

 on oak. 



28 IN 



Pi.tr. i/S. Dryocainfia rubicunda a, larva; b, pupa; 

 c. female adult. 



