head and prothorax are dusky and coriaceous, and two broad marks 

 on mesothorax, two smaller ones on metathorax, two on the fourth 

 and fifth abdominal sutures, and one at tip of abdomen are generally- 

 visible, but sometimes obsolete; the third and fourth joints of 

 antenna are dusky, but the legs are still pale. After the second 

 molt the head and thorax are quite dusky and the abdomen duller 

 red, but the pale transverse band is still distinct; the wing-pads 

 become apparent, the members are more dusky, there is a dark-red 

 shade on the fourth and fifth abdominal joints, and, ventrally, a 

 distinct circular dusky spot, covering the last three joints. 



The last-stage larva (fig. 3, g). — In the last-stage larva, or nymph, 

 sometimes called the "pupa," all the coriaceous parts are brown- 

 black, the wing-pads extend almost across the two pale abdominal 

 joints, which are now more dingy, while the general color of the 

 abdomen is dingy gray; the body above is slightly pubescent, the 

 members are colored as in the mature bug, the three-jointed tarsus 

 is foreshadowed, .and the dark horny spots at tip of abdomen, both 

 above and below, are larger. 



Tlie adult. — There are two forms of the fully developed insect, but 

 it is not known that the young of these two forms differ in any respect. 

 One of these forms is known as the long-winged form and is the only 

 form that occurs over most of the country between the Rocky 

 Mountains and the Allegheny Mountains, and is the one originally 

 described. This form is illustrated in figure 1. 



The second form is much like the first, with the exception of the 

 wings, which are more or less abbreviated, as shown in figure 2. 

 This form occurs along the seacoasts and in the East extends inland 

 along the lower lakes to northern Illinois. It is not abundant, 

 however, west of a line drawn from Toledo, Ohio, to Pittsburg, Pa. 

 Throughout the territory in which this short-winged form is found 

 there are also intermingled with them individuals of the long-winged 

 form. Both of these forms may be described as black, with numerous 

 hairs also black, and with the under wings white. The upper wings 

 are whitish, with a black spot on each. They are about one-fifth of 

 an inch or less in length and may be easily recognized by the accom- 

 panying illustrations (figs. 1, 2, 3, h, i, /). 



SEASONAL HISTORY. 



Over the territory covered by the long-winged form, as previously 

 given, the insect has two generations each year. The young of the 

 first generation appear in May and June, and those of the second 

 generation in August and perhaps as late as September. The adult 

 insects (figs. 1,2) pass the winter among matted grass, fallen leaves, 

 and other rubbish, and come forth from their hiding in spring and 



[Cir. 113] 



