INSECTS AFFECTIXC. PARK AND WOODLAND TREES 305 



curving transverse lines. The prothorax bears a conspicuous mass of long 

 scales bordered laterally and posteriorly with light gra)- |j)l. 15, tig. 4]. 



Life history. The life history of this species is about as follows. The 

 eggs are deposited in early August and the larvae may be observed during 

 that month and September. They enter the ground aftc-r attaining full 

 growth and transform to pupae within oval cells in the earth. The moths 

 are stated by Dr Packard to appear in May and August, and this apparently 

 indicates two broods, which may be true in the more southern portions 

 of this insect's range but we have failed to note any signs of more 

 than one generation in New York State. 



Food plants. This insect prefers the black walnut. It also feeds on 

 butternut, hickor)- and walnut, and has been recorded on beech, oak, 

 willow, honey locust, thorn and apple. 



Distribution. This species has apparently a wide range in the eastern 

 United States at least, and has been recorded from Maine south to West 

 Virginia, and westward to Kansas and Arkansas. 



Bibliography 

 1890 Packard, A. S. U. S. Ent. Com. 5th Rep't, p. 150-51 

 1895 First Memoironthe Bombycine Moths. Nat. .'\cad. Sci. p. 120-22 



Hickory horned devil 



Citlicroiiia rcgalis Fabr. 



A larf^e, bluish green caterpillar, with four conspicuous hornlike projections on the 

 thoracic se<jments, and a number of smaller near by, occurs in September on hickory and 

 other trees. 



This, one of our largest native caterpillars, is a rare species in Xew 

 York State. It feeds on hickory, also black walnut, and butternut, and 

 has been recorded as occurring on persimmon and sumac. 



Description. The full grown caterpillar is a magnificent creature, and 

 may measure 5 inches when extended in its crawling attitude. Its general 

 color is areen with a yellowish cast. On the thoracic segments there are 

 eight serrate horns, four small and black and the other four quite long, 

 orange brown or red with black extremities. The adult moth is one of our 



