INSECTS. 51 



shows the chrysalis, and Fig. 36 the caterpillar. The moth lays 



her eggs on the under side of the vine leaves, from which the 



caterpillar is hatched in a few 



days, at first only one-fifth* of 



an inch long, and having a long 



black horn on the last segment 



of the body. It is a great eater 



and rapidly increases in size, 



imdergoing some changes in Fig. 35. 



appearance during its growth, until it reaches a length of two 



inches, when it is usually of a light green color, dotted along 



the back and striped on each side as shown in Fig. 36. It is 



during this caterpillar state that it commits its depredations, 



consuming the foliage, and when numerous, stripping the vine 



quite bare. 



After attaining its full growth, 

 the caterpillar descends to the^ 

 ground, gathers some leaves together 

 with a few silken threads, and 

 passes into the chrysalis state. 

 Those that pass into this state early 

 in the season soon hatch out as 

 winged moths, lay more eggs, which 

 soon produce more caterpillars ; but 

 those which go into the chrysalis 

 state late in the season, remain in Fig. aa. 



the chrysalis state all winter. 



There is but one way of getting rid of this vine-leaf eater, 

 that of searching for them on the vines, picking them off and 

 killing them. Fortunately it is an easy matter to find them, for 

 they usually make clean work as they go, eating the entire leaf 

 and leaving only the foot stalk standing. Only a careless and 

 slovenly cultivator need ever suffer very materially from the 

 lavages of thia insect. 



