60 



Fig. 33. 



like a dog's tail ; as the larva grows older it 

 changes to a reddish-brown, and by the third 

 month it entirely loses the caudal horn. It 

 measures when full-grown nearly four inches ; 

 it crawls by a series of sudden jerks, and 

 flings its head savagely from side to side when 

 alarmed. The body is pinkish on the back, 

 the sides a darker shade. On the segments 

 six to ten inclusive are five cream-yellow 

 patches, with a black annulation ; on seg- 

 ments two to six are numerous small black 

 dots, but on the remaining segments only 

 two ; the head reddish-brown. The most 

 common general colour of the full-grown 

 larva is a rich velvety brown — vinous brown. 



It feeds on the leaves of the grape vine 

 and Virginia creeper. They consume great 

 quantities of leaves, often stripping bare the 

 branches they attack. 



The pupation occurs, according to Mr. 

 Lintner, in a ground cell, constructed at a 

 very moderate depth. The chrysalis is chest- 

 nut-brown, about two inches long, with a 

 long thick terminal spine, slightly forked ; 

 the moth generally appears the following 

 June. The moth (fig. 32) expands from 

 four to five inches, and is of a light olive 

 colour, variegated with patches of darker 

 olive-green ; the antemise long, slender, and 

 tapering at the extremity into an ample 

 hook, with seta or bristles. This form of 

 the antennae is characteristic of the genus. 



16. Philampelus achemon, Drury. 



Sphinx achemon, Drury. 

 " crantor, Cramer. 

 " " Fabricius. 



" " Abbot and Smith. ✓ 



Pholus " Hubner. 

 Philampelus achemon, Walker, C. B. M. 



" Clemens, Syn. K A. Sph. 

 " Morris, Syn. N. A. Lep. Sm. Ins., p. 177. 



" " Harris, Ins. Inj. Yeg., p. 325. 



Like its congener, P. pmidorics, the young larva in its earlier stages is green, and has 

 the caudal horn, which it eventually loses. 



