SOUTH AriUCAN BAGWORMS. 



219 



H e 1 i c h r y s u m p a r V i f 1 o r u 111 . These are attached crosswise, 

 at right angles to the long axis of the bag. These sticks 

 being longest at the middle part of the bag, and both ends 

 being without them, the outer contour of the bag is rendered 

 somewhat spherical. This appearance is accentuated by the 

 lower two-thirds of the bag being covered with a layer of 

 silk, covering the little twigs so as to leave only the points 

 exposed. 



Text-kig. 22. 



Monda major Heylaerts. 

 Bag from which moth has emerged. X 0-9 (after Junod)._ b. 

 External view of male bag. X 1'8. c. Male bag in vertical section, 

 showing cocoon. X 1"8. D. Female bag in pupation stage. X 1'8. 

 E. Female bag in vertical section, showing pupa. X 1'8. f. Full- 

 grown female larva (setae not showing), x 4. 



When pupation time approaches, the male spins a cocoon 

 in the form of an inner column of silk, attached to the upper 

 and lower end of the bag but free in the middle. 



Female Bag. — This is considerably larger than that of 

 the male (text-fig. 22, d, e). It averages 16 mm. in length 

 by 10 mm. in width; is more oval in shape, with both ends 

 truncated. Tlie construction of the bag is the same as that 

 of the male, with the exception that the outer webbing covers 

 nearly the entire bag, leaving only the neck (upper pai't) free. 



