APPLE INSECTS — JiUDS AND FOLIAGE 127 



hump. When at rest the tip of the body is held in an elevated 

 position. 



In the North, there is only one brood, the caterpillars ma- 

 turing in August and September. They construct slight 

 cocoons under trash on the ground and as a rule remain in the 

 larval condition through the winter, pupating the following 

 May or June. In the South where there are two broods, the 

 first brood of caterpillars may form their cocoons in curled 

 leaves. 



The red-humped apple caterpillar may be controlled by the 



measures recommended for the yellow-necked apple caterpillar 



(page 125). 



References 



Mass. (Hatch) Agr. Exp. Sta. Bull. 28, pp. 17-19. 1895. 

 Packard, Nat. Ac. Sci., VII, pp. 212-217. 1895. 



The Saddled Prominent 



Heterocampa guttivitta Walker 



While generally distributed throughout the northern and 

 eastern United States this beautiful green saddle-marked 

 caterpillar had never attracted attention by its injuries until 

 the outbreak of 1907-1908 in New York, Vermont, New Hamp- 

 shire and Maine, where large areas of forests were defoliated. 

 It is primarily a forest insect feeding on the beech, birch, maple 

 and oak, but is also destructive to the apple. 



In Maine the parent moths emerge the latter part of May 

 and during June. The moth has an expanse of about two 

 inches ; it is brownish-gray in color and the front wings are 

 crossed by indistinct darker lines. The female deposits her 

 smooth, pale green, slightly flattened eggs singly on the leaves. 

 They hatch in about nine days. The young caterpillars in 

 the first stage bear nine pairs of black horns along the back ; 

 the first pair back of the head are much longer than the others 



