104 



INJURIOUS INSECTS OF KANSAS. 



foliage of the tree. When the larva is feeding or traveling, the- 

 head and front end of the body, with the six legs, project from 

 the bag. The projecting part of the body of the larva is rather 

 horny, and is mottled with black and white; that part of the 

 body within the bag is soft, and dull, brownish-red. 



Fig. 57. Bag-wokm; a, case cut open, containing eggs; 6, larva in case; c, larva. 



When ready to pupate, the larva fastens the bag securely to 

 some limb and changes within the case. The female moth oni 

 hatching does not leave the bag, but awaits the male near the en- 

 trance to the case. She lays her eggs within the bag, and theiB 

 drops out of it to the ground and dies. The eggs hatch the fol- 

 lowing year. 



The injury to the foliage is done, of course, by the larva while 

 feeding. The pest appears to prefer conifex'ous to deciduous trees. 



Remedies. — There are several parasitic insects which do muchi 

 to keep the Bag-worm in check. 



Gathering the cases, which contain the eggs, in winter is a sure 

 remedy. 



Spraying the foliage of infested trees with London purple (see 

 p. 8) or Paris green (see p. 7) in the early summer, w^hile the 

 worms are young, will be effective. 



As the female is wingless, the spread of this pest is slow; audi 

 if one rids his premises of the insect, he will not have all his. 

 labor brought to naught by the indifference of some neighbor, as 

 can more easily happen in the case of other insect pests. 



Kansas Notes. — The Bag-worm has been known for several 



