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INJURIOUS INSECTS 



there are any marks whereby they can be distinguished 

 from each other." The moth is more common in the 

 West than its larger ally, and though we have never bred 

 it from the larva, yet we have often met with a worm 

 which, for various reasons, we take to be this species. 

 It never grows to be quite so large as the other, and may 

 readily be distinguished by its more decided bluish cast; 

 by having but four light and four dark stripes to each 

 segment, by having no orange band across the middle seg- 

 ments, and by the spots, with the exception of two on 

 the back placed in the middle light band, being almost 

 obsolete. The head, shield on first segment, hump on 

 the 11th, and a band on the 12th, are orange, spotted 

 with black. Venter orange, becoming dusky towards 

 head; feet and legs also orange, with blackish extremities, 

 and with spots on their outside at base. 



This worm works for the most part in the terminal 

 buds of the vine, drawing the leaves together by a weak 

 silken thread, and cankering them. It forms a simple 

 earthen cocoon, or frequently bores into a piece of old 

 wood, and changes to chrysalis, which averages but 0.36- 

 inch in length : this chrysalis is reddish-brown, covered 

 on the back with rows of very minute teeth, with the tip 

 of the abdomen truncated, and terminating above in a 

 thick blunt spine each side. 



From the above accounts, we hope our readers will have 

 no difficulty in distinguishing between these three blue 

 caterpillars of the Grape-vine. 



Remedies. — The larvae of the two Wood Nymphs have 

 a fondness for boring into old pieces of wood, to transform 

 to the chrysalis state, and Mr. T. B. Ashton, of White 

 Creek, N. Y., found that they would even bore into corn 

 cobs for this purpose in preference to entering the 

 ground, wherever such cobs were accessible. The Eight- 

 spotted Forester, on the contrary, has no such habit, and 

 while the only mode of combating it is to pick the larvae 



