LEP1DOPTERA. 



267 



FlG. 316. Seirodonta bilineata, 

 larva. 



feeding on the leaves of oak, elm, and basswood. It 



measures when full grown about one 

 and one half inches in length. Its 

 ground-color is usually green, but 

 sometimes claret-red. There is a 

 pale yellow stripe along the middle of the back, and on each 

 side a stripe of the same color. The course of these side 

 stripes is very characteristic ; passing back from the head, 

 they converge on the prothorax ; on the mesothorax and 

 metathorax they are separated from the dorsal line only by 

 a narrow band of red or purple; on the first abdominal seg- 

 ment they diverge to the lateral margin of the back, but 

 converge again on the seventh and eighth abdominal seg- 

 ments. This yellow subdorsal line is bordered without by 

 a milk-white stripe; and extending from this stripe over the 

 side of the body there is a whitish shade which fades out 

 below. The moth is ash-colored, with the fore wings crossed 

 by two wavy lines between which the wing is darker ; be- 

 tween the outer wavy line and the outer margin of the wing 

 there is a faint band. 



The Red-humped Apple -worm, (Edemasia concinna 

 (CEd-e-ma'si-a con-cin'na). The larva of this species (Fig. 

 317) is common on apple and allied plants. The head is coral- 



FIG. 317. CEdemasia concinna, larva. 



red, and there is a hump of the same color on the back of the 

 first abdominal segment ; the body is striped with slender 

 black, yellow, and white lines, and has two rows of black 



