HAWK-MOTHS OF THE VICINITY OF NEW YORK CITY 31 



48. Cressonia juglandii 



Not rare in this vicinity. Double-brooded. The first brood 

 appears in June and the see-on, 1 in August. The species is sub- 

 ject to considerable variation; some specimens are uniformly pale 

 fawn color or ochraceous, with the transverse lines distinct, while 

 other examples are more or less covered with dark brown so as 

 to almost obscure the ground color and transverse lines. It is 

 found from Canada to Florida and westward to the Mississippi 

 and Texas. The caterpillar feeds on walnut, butternut, hickory 

 and ironwood. Enters the ground to pupate. 



