222 



INJURIOUS INSECTS 



grows older it changes to a reddisli-brown, and by tlie 

 third moult it entirely loses the horn. 



When full grown^ it measures nearly four inches in 

 length, and when crawling appears as figure 139, a. It 

 crawls by a series of sudden jerks, and will often fling its 

 head savagely from side • to side when alarmed. Dr. 

 Morris describes the mature larva as being green, with 

 six side patches; but though we have happened across 

 many specimens of this worm during the last seven years, 

 we never once found one that was green after the third 

 moult; nor do we believe that there are ever any more 

 than five full-sized yellow spots each side, even in the 

 young individuals. The specimen from which our figure 

 was made, occurred at Hermann, Missouri, in Mr. George 

 Husmann's former vineyard. The back was pinkish, 

 inclining to flesh- color; the sides gradually became 

 darker and darker, and the five patches on segments 6 

 to 10 inclusive, were cream-yellow with a black annula- 

 tion, and shaped as in our figure. On segments 2, 3, 4, 

 5 and 6, were numerous small black dots, but on each of 

 the following five segments there were but two such dots. 

 A pale longitudinal line ran above the yellow patches, 

 and the head and first joint were uniformly dull reddish- 

 brown. 



The most common general color of the full grown 

 worm is a rich velvety vinous-brown. When at rest, it 

 draws back the fore part of the body, and retracts the 

 head and first two joints into the third (fig. 139, b), and 

 in this motionless position it no doubt manages to 

 escape from the clutches of many a hungry insectivorous 

 bird. 



When about to transform, the larva of our Satellite 

 Sphinx enters a short distance into the ground, and soon 

 works off its caterpillar-skin and becomes a chrysalis of a 

 deep cliestnut-brown. The moth (fig. 140) makes its 

 appearance in June of the following year, though it has 



