PUPAE OF SOME MAINE SPECIES OF NOTODONTOIDEA 71 



jection ; abdominal spiracles slightly produced, the openings 

 somewhat crescent-shaped ; eighth abdominal segment with a 

 dark tubercle scar on each side of the meson; cremaster about 

 1 mm. in length, the lateral margins subparallel, the mesal mar- 

 gins with two projections. 



Length 15 to 20 mm.; greatest width 4 mm. 



The larvae of this species has been collected .only on maple, 

 although it is reported from oak, elm and several other trees. 

 The larvae enter the soil to pupate and there spin a thin cocoon 

 which is covered with particles of sand or soil. The pupae of 

 this species closely resemble those of certain species of Hctcro- 

 canipa notably H. bilineata. 



SCHIZURA CONCINNA Smith and Abbot. 

 The Red-humped Apple-worm. Fig. 5, A. 



Color chestnut brown ; body with a prominent median ce- 

 phalic projection which is slightly bifurcate; face-parts and 

 appendages smooth and polished, without markings except for a 

 few transverse impressions ; antennae not extending as far cau- 

 dad as the mesothoracic legs, which are usually 1 mm. longer; 

 maxillae five-sixths the length of the wings ; scars of larval 

 projections prominent on each side the meson of the mesothorax. 

 metathorax and first abdominal segment, where they often show 

 as distinct tubercles, less prominent scars on the fourth abdom- 

 inal segment, and occasionally scars visible on the other seg- 

 ments but usually not distinct; caudal margin of mesonotum 

 normally with nine pits and eight square, black, polished areas 

 between ; abdominal segments rather densely punctate with 

 punctures of medium size, the punctures on the cephalic margin 

 of segments 5 to 7 differing very little from those on the re- 

 mainder of the segment ; abdominal spiracles large, slightly pro- 

 duced, the openings elliptical, the margins very dark brown; 

 cremaster about one-half millimeter in length, bifurcate, each 

 half oblong with a very slight projection at each angle and an- 

 other on the mesal margin about half way to the distal end. 



Length 10 to 12 mm. ; greatest width 4 mm. 



The red-humped apple caterpillar is often a serious pest in 

 apple orchards. It also feeds on other fruit trees and a number 

 of forest trees. The larvae feed mostly at the ends of the 



