LIFE-STAGES OF THE INSECT 



69 



front like the letter V reversed." The size of the mature worms 

 varies considerably, some specimens reaching a length of two 

 inches. 



The Pupa into which the full-grown army worm changes 

 before it can become a moth is represented in Figure 6 d. It 

 is a quiet, footless, wingless object, of a bright mahogany 

 brown color, and measures about three-fourths of an inch in 

 length. At the smaller end there are two pointed projections 

 side by side, and near the base of each projection is a smaller, 

 more slender spine with a hooked tip. 



Fig. 6. The Army Worm: a, egg-mass, natural size; /', eggs, magnified; 

 c, full-grown larva; d, pupa; e, moth. (After Riley). 



The adult 7noth into which the army worm develops, and 

 from the eggs of which it originates, is represented, natural 

 size, in Figures 4 and 6 e. Its expanded wings measure about 

 an inch and a half from tip to tip, although there is considerable 

 variation in the size of different specimens. The general color 

 of the body and front wings is a peculiar reddish-gray, perhaps 

 more distinctly described as fawn color. Near the middle of 

 each front wing are two more or less irregular lighter patches, 

 each of which on closer study is seen to be made up of three 

 smaller spots. Along the side margins of both pairs of wings 

 thei'e is a fringe of feathery scales, immediately inside of which, 

 on each of the front wings, is a row of blackish dots. The 

 hind wings are more grayish, with less of the reddish tinge. 



