Insects injurious to fruits . t of August, the colorof the body grows gradually darker, until it becomes darkreddish brown, with the sides nearly black, and the bluedots become much more distinct. Having selected a suitablespot in which to pass the chrysalis state, it spins a web ofsilk, into which the hooks on the hind legs are firmly fastened ;then, having prepared and stretched across a silken band orloop to support its body in the middle, it casts its larval skin,and remains a dull-brown chrysalis, of theFig. 82. form shown in Fig. 82, until the following spring. This insect is very widely
Insects injurious to fruits . t of August, the colorof the body grows gradually darker, until it becomes darkreddish brown, with the sides nearly black, and the bluedots become much more distinct. Having selected a suitablespot in which to pass the chrysalis state, it spins a web ofsilk, into which the hooks on the hind legs are firmly fastened ;then, having prepared and stretched across a silken band orloop to support its body in the middle, it casts its larval skin,and remains a dull-brown chrysalis, of theFig. 82. form shown in Fig. 82, until the following spring. This insect is very widely distributed,being found in nearly all parts of theUnited States and Canada. The caterpil-lar feeds on a number of different trees,but chiefly affects the apple, cherry, thorn,and basswood. As it is always solitary in its habits, it isnever likely to cause much injury. South of Pennsylvaniathe female of this species of butterfly usually loses its yellowcolor and becomes nearly black, while the other sex retainsits normal ATTACK INQ THE LEAVES. 86 No. 31.—The Blind-eyed excecatus (Sm. & Abb.). During September, and sometimes as late as the beginningof October, there may be found occasionally on the apple-tree,feeding on the leaves, a thick, cylindrical caterpillar, about twoand a half inches long, with a green triangular head, borderedwith white, an apple-green body, paler on the back, but deeperin color along the sides, with its skin roughened with numerouswhite-tipped granulations, having a stont horn on the hinderpart of its back, of a bluish-green color, with I^^Q- 83. seven oblique stripes oneach side, of a pale yel-low, the last one of abrighter yellow than theothers and extending- tothe base of the is the larva of theblind-eyed sphinx, represented in Fig. 83. When full grown, it leaves the tree and buries itself in
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