BUTTERFLIES OF THE VICINITY OF NEW YORK CITY 



28. Violet-Tip (Polygonia interrogationis). 



Found in glades, gardens and roadsides in the vicinity of woods. 

 It is very fond of sucking the sap which flows from wounded trees, 

 especially maples and oaks, and is attracted by juices of decaying 

 fruits. When at rest on the trunk of a tree, it is very difficult to de- 

 tect, owing to the brown color of the under side of the wings, which 



ely resembles that of the bark of the tree or of a withered leaf. 

 It is rather common during warm weather, but difficult to capture. 

 In this vicinity there are three broods, the last one hibernating in the 

 butterfly state. This butterfly has two forms; the hibernating one 



g known as form jabricii and the other as umbrosa. Fabricii has 

 the upper sides of all the wings orange- brown, with pale and black 

 spots. The form umbrosa has the hind wings very dark brown with 

 the markings obliterated. The caterpillar lives on elm, haekberrv 



Us), hop and nettle. 



29. Hop Merchant <>r Comma Butterfly (Polypi* ma), 



A v< ect with a quick, nervous flight, ame 



