84 



INSECTS INFESTING THE APPLE TREE. 



form a black lateral line, or when the caterpillar is stretched 

 appears as. a large black spot on the side of each segment ; in 

 the center of these spots is a small bluish mark ; below this is 

 a yellow (orange) line, and lower are five crinkled lines, yellow 

 and black. Ventral parts a dark, dusky color ; on one of the 

 posterior segments is a small blackish wart. The body is 

 clothed with soft short hairs, rather thicker on the sides than 

 on the back and ventral parts. When full grown it spins a 

 cocoon (Fig. 52rfj, in which it undergoes its transformations. 

 Pupa. — The pupa state is from fourteen to sixteen days. 



MOTH. 



Ficr. 53. 



Fig. 54. 



Fig. o4.--Eggs of Orcliard Tent 

 Caterpillar — color, brown. 



Fig. 53. — Female Moth of Orchard Tent Caterpillar — (some- 

 times called the American Lackey Moth) — colors, yellowish or 

 reddish-brown and white. 



The moth (Fig. 53) differs but little in appearance from the 

 C. constricta; the color is somewhat lighter ; the lines on the 

 fore-wings are more oblique, and the apex shorter. In some 

 specimens the band between the lines of the fore-wing are dark, 

 or of the same color as the base and apex ; in others it is very 

 light, or what may be termed a dirty white. The perfect insects 

 appear about the latter part of May. They deposit their eggs 

 (Fig. 54) on the branches on which they feed, and cover them 

 with a secretion to pi'otect them in the Winter season. The 

 young caterpillars hatch about the time the leaves open. This 

 species can be exterminated by picking off and destroying the 

 bunches of eggs before the tree leaves out, and by picking off 

 and destroying tents when made ; or the latter may be burned 

 with their occupants, at such hours of the day as the caterijil- 

 lars are at rest. A torch made of rags bound upon a pole and 

 saturated with kerosene is a useful weapon for this kind of 

 warfare. 



Remedies as above described. Also, see Nos. 23, 29 and 31. 



