170 INJUKIOUS IKSECTS 



known as " Stone-fruits/' Peach, Plum, Cherry, etc; 

 another, the Pear Sub-family (Pomece), includes the Ap- 

 ple, Pear, Quince, etc., and it is not often that the in- 

 sects which prey upon one sub-family attack the other. 

 Still there are a few general feeders, which are injurious 

 to nearly all fruit trees, and make it difficult to classify 

 insects according to the trees upon which they feed. 

 The insects which follow, while they also injure the 

 Apple, do not confine themselves to it; some attack all 

 fruit trees alike, while the Peach-borer and Plum Curcu- 

 lio restrict themselves to the stone-fruits. 



THE RED-HUMPED CATERPILLAR. 

 (Notodonta continna, Smith.) 



Young Apple and Pear trees, and sometimes other 

 fruit trees, are frequently defoliated, or have large 

 branches completely stripped of their leaves in late sum- 

 mer or early autumn, by the Red-humped Caterpillar. 



Fig. 109. BED-HUMPED CATERPILLAR. Fig. 110. PUPA OP RED- 



(Notodonta concinna, Smith.) HUMPED CATERPILLAR. 



The eggs are usually deposited in July, in clusters on 

 the underside of a leaf near the end of a branch, and the 

 young caterpillars eat downward, making clean work of 

 the foliage as they descend. The full-grown caterpillars 

 (fig. 109), are an inch and a quarter long; the general 

 color yellowish-brown, paler on the sides, and striped 

 length- wise with slender black lines; the head is coral- 

 red, and on the top of the fourth ring is a bunch or hump 



