The Canadian Horticulturist. 

 THE GREEN GRAPE-VINE SPHINX. 



307 



HERE may frequently be found on grape-vines of all varieties 

 during the summer, caterpillars shaped as in the cut given 

 herewith. When full-grown this caterpillar is about two 

 inches in length with a small head. The body is green and 

 is covered with small yellow dots. Along the sides are 

 seven pale stripes sloping backwards and shaded behind 

 with dark green. A white stripe also margined with dark 

 green runs along each side from the horn at the end of the body. The series of 

 spots shown on the back consists of blotches of pale lilac, bordered with yellow. 

 The anal horn, which is nearly a quarter of an inch long, is blueish spotted with 

 black in front, and yellow be- 

 hind. When at rest the head 

 and the next two segments are 

 drawn back into the fourth and 

 fifth, which are much distended. 

 This habit is also characteristic 

 of the Achsmon Sphinx, a much 

 larger caterpillar, which is oc- 

 casionally found on grape-vines 

 with the Green Grape-vine Fig. 9W. -The Grape-vine Sphinx. 



Sphinx. It, however, may be at once recognized by its ruddy color, and from the 

 fact that when full-grown, instead of the anal horn, it has merely a poUshed 

 tubercle. 



When the Green Grape vine Sphinx is full-grown, it leaves the foliage and 

 forms a loose cocoon on the ground or near the base of the vine on which it has 

 fed. The chrj'salis is of a pale-drab color finely dotted all over with black 

 points. The breathing pores along each side are black and conspicuous. There 

 are two broods of this insect in the year. The moths from the first brood 

 appear in July, and these lay eggs the caterpillars of which attain full growth in 

 September, pass the winter in the chrysalis state and appear as moths in the 

 following May. The perfect insect is a very beautiful moth, which expands 

 about two inches and a half from tip to tip of the opened wings. The front 

 wings are of a dark olive-green color, crossed by bands of greenish gray. The 

 hind wings are of a dull brick red. 



These caterpillars are sometimes very destructive to the foliage of grape- 

 vines, but are easily destroyed and can be controlled without difficulty by hand- 

 picking. 



Central Exper' I Farm, Ottawa. J as. Fletcher. 



