74 SECOND ANNUAL REPORT OF 



THE ACHEMON SPHINX— Pliilampelus achemon, Drury.* 



(Lepidoptera, Sphingidae.) 

 [Fig. 49.] 



This is another of the large Grape-vine-feeding insects, belonging 

 to the great Sphinx family, and which may be popularly known as 

 the Achemon Sphinx. It has been found in almost every State where 

 the Grape is cultivated, and also occurs in Canada. It feeds on the 

 American Ivy (Ampelopsis quinqitefolia, with as much relish as on 

 t Fi £- 50 -l the Grape-vine, and seems to 



show no preference for any of 

 jthe different varieties of the lat- 

 ^ter. It is, however, worthy of 

 remark, that both its food-plants 

 belong to the same botanical Family. 



The full grown larva (Fig. 49.) is usually found during the latter 

 part of August and fore part of September. It measures about 3| 

 inches when crawling, which operation is effected by a series of sud- 



[Fig. 51.] 





den jerks. The third segment is the largest, the second but half its 

 size and the first still smaller, and when at rest the two last men- 

 tioned segments are partly withdrawn into the third as shown in the 

 figure. The young larva is green, with a long slender reddish horn 

 rising from the eleventh segment and curving over the back, and 



*The synonyms for this insect are Sphinx Crantor, Cramer, and Pholus crantor, Huebner. The 

 genus Pliilampelus— meaning literally " fond of the vine" — was erected by Harris to include this 

 and the next species. 



