462 



NATURAL HISTORY OF ARTHROPODS. 



inch. The entire insect is greenish black, with the exception of the prothorax, which 

 is orange yellow. The catei-pillars are gregarious, living and feeding together in 



considerable numbers on the same leaf. 



« »iiilliin^ ir ^ iiinniiii ^^^ They are hatched from eggs laid in clus- 



T^^^^l^ JkI^ ^®'^ °^ twenty or more on the under side 



-/«>■ W^w ^^ ^^^ leaves. When fully grown they are 



a little more than half an inch long, of a 

 yellow color, with a transverse row of 

 black velvety tufts on each segment, and 

 a few hairs on each extremity of the body. 

 They feed on the leaves of the grape 

 and the common creeper, Ampelopsis quin- 

 quefolia. 



Lycomorpha pholus flies only in the 

 day time, and is remarkable for its long 

 narrow wings, which expand a little over 

 an inch. The entire insect is bluish black, 

 with the excejDtiou of the shoulder covers, 

 and the basal half of all the wings, which 

 are orange colored. Harris states that the 

 caterjiillar is pale green, with yellowish 

 spots running into green. The head is 

 black and covered with a few short, whit^ 

 ish hairs ; while the body is clothed with 

 rather long hairs, which are white on the 



Fig. 580. — Narrisina americana. larvre and adult. 



Fig. 581. — Lycomorpha pholus. 



sides and black on the back. It feeds upon the lichens on 

 stones in shady places, and undergoes its transformations in 

 a thin silky cocoon. 



The beautiful wood-nymph, Eudryas grata^ expands about 

 an inch and three-quarters. Its fore wings are creamy white 

 with a broad stripe along the costa, from the base to the 

 middle, and a broad band along the outer margin, of a deep 

 purplish-brown color. The band is olive green on the inner edge, and has a slender 

 white wavy line along the outer margin. Near the middle of the wing are two brown 

 spots, one of which is round, the other, kidney-shaped. At the centre of the hind 



margin is a large triangular olive-green spot. The' 

 hind wings are yellow, with a purplish-brown band 

 along the outer margin, on which there is a white 

 line. The thorax is white, with a central longitu- 

 dinal stripe of black and pearl-colored scales. The 

 head is black, and the abdomen yellow, with a row 

 of black spots on the upper surface. The fore tibisB 

 are densely clothed with long hair-like scales, giving 

 them a singular snuff-like appearance. This beau- 

 tiful moth deposits its peculiar eggs, singly or in small clusters, on the under side of 

 the leaves. These eggs are circular, very flat, of a greenish-yellow color, and beauti- 

 fully sculptured with radiating ribs and fine cross lines. When first hatched the cater- 

 pillars are greenish yellow dotted with black. They eat small holes through the leaves ; 



Fig. 082. —Eudryas grata. 



