256 INSECTS INJURIOUS TO THE ORAPE. 



spots along each side, each spot consisting of two curved black 

 lines, enclosing a crimson patch above and a pale-yellow line 

 below, the whole being connected by a pale-yellow stripe 

 edged with black. In some instances these spots are discon- 

 nected, and the space between the black crescents is of a uni- 

 form cream-color. The breathing-pores, lower down the side, 

 are margined with black, or black edged with yellow. Tiie 

 otiicr form of the caterpillar is black, with a yellow line down 



Fig. 266. 



the back, and a double series of yellow spots and dots along 

 the sides. It is shown in Fig. 266. 



When mature, it buries itself under the surface, where, 

 within a smooth cavity, it changes to a light-brown chrysalis, 

 the moth emerging early in September, when it deposits eggs, 

 from which the second brood of larvse are produced, which 

 mature, enter the ground, and change to chrysahds before 



winter sets in. , i n 



Since it feeds mainly on plants of little value, and on these 

 in no great abundance, it is scarcely entitled to be classed witii 

 injurious insects; yet on account of its being found occasionally 

 feedino- on grape leaves it is deserving of mention here. A 

 two-winged parasitic fly, a species of Tachina, infests it and 

 destroys a large number of the larvae. 



No. 137.— The Dark-veined Deilephila. 



Deilephila chamcenern Hams. 

 This moth very closely resembles the white-lined Deile- 

 phila, No. 136, as will be seen from Fig. 267. Ithas the 

 same greenish-olive color, and almost the same stripes and 



