20 LESSER APPLE LEA.F-FOLDER. 



that it is not probable that they will ever be very seriously injuri- 

 ous to fruit trees. The greatest objection to them is the disfigure- 

 ment which their extensive webs produce both from fruit and 

 ornamental trees. I do not know that any predaceous or parasitic 

 insects prey upon them. Indeed they are so protected daring the 

 day, that it is not easy to comprehend how any insect enemies 

 could get access to them. 



An interesting question here presents itself, whether the para- 

 sitic insects are active in the night. We often see them plying 

 their busy avocation in the day time, but the minute size of most 

 of them precludes the possibility of our detecting whether they 

 extend their operations into the night. 



These are gregarious insects and are therefore easily removed 

 by hand, or, where they are out of reach, by thrusting a pole into 

 their nests and turning it round and round so as to entangle them 

 in their web. Shaking and lime-dusting are here of no avail. 

 One of my neighbors told me that he effectually removed them 

 from his garden trees by tearing open their nests and sprinkling 

 in some Paris Green with which he had been killing potato-bugs. 

 But such applications are unnecessary. The true remedy consists 

 in removing the nests by hand as soon as they make their appear- 

 ance. 



These insects pass the winter in the chrysalis state, and make 

 their appearance in June and July in the form of white moths, 

 without spots, with tawny yellow fore thighs and blackish feet, 

 and measuring a little more than an inch across the expanded 

 wings. A figure of the cocoon, and an imperfect one of the cat- 

 erpillar, may be seen on plate vii, figs. 10 and 12, of Dr. Harris's 

 treatise on insects injurious to vegetation. 



THE LESSER APPLE LEAF-FOLDER. 



[Torlrix malivorana, N. sp.) 

 Order of LEPIDOPTERA. Family of Tortricid^. 



A pretty little bright-orange, round-shouldered moth, the 

 larva of which is a small, greenish, naked caterpillar, with a pale 

 amber-brown head and whitish incisions. In some specimens the 



