Insects Injurious to the Grape Vine. 



373 



From the American Entomologist. 



INSECTS INJURIOUS TO THE GRAPE VINE. 



TIJE ACHEMON SPHINX. 



{Philampelus acliemon, Drui\v.) 



"We herewith represent another large 



grape vine-feeding insect, belonging to 



the great Siohinx family, and which may 



be popularly known as the Achemon 



Sphinx. It has been found in almost 

 every State where the grape is culti- 

 vated, and also occurs in Canada. It 

 feeds on the American Ivy {Aiyipelopsis 

 quinqubfolia) with as much relish as on 

 the grape vine, and seems to show no 



[Fig. 1.] 



Colors— Green, yellow and brow^l. 



preference for any of the different vari- 

 eties of the latter. It is, however, wor- 

 thy of remark, that both its food-plants 

 belong to the same botanical family. 

 The full grown larva (Fig. 1 a) is 



Color— Brown. 



usually found during the latter part of 

 August and fore part of September. It 

 measures about 3i inches when crawl- 

 ing, which operation is effected by a 

 series of sudden jerks. The third seg- 

 ment is the largest, the second but half 

 its size and the first still smaller, and 



when at rest the two last mentioned seg- 

 ments are partly withdrawn into the 

 third as shown in our figure. The young 

 larva is green, with a long slender red- 

 dish horn rising from the eleventh seg- 

 ment and curving over the back, and 

 though we have found full grown speci- 

 mens that were equally as green as the 

 younger ones, they more generally as- . 

 sume a pale straw or reddish-brown 

 color, and the long recurved horn is in- 

 variably replaced by a highly polished 

 lenticular tubercle. The descriptions ex- 

 tant of this worm are quite brief and 

 incomplete. The specimen from which 

 our drawing was made, was of a pale 

 straw color which deepened at the sides 

 and finally merged into a rich vandyke- 

 brown. A line of a feuillemorte brown, 

 deep and distinct on the anterior part, 

 but indistinct and almost effaced on the 

 posterior part of each segment, ran along 



