INSECTS AFFECTING CELERY, PARSNIP AND 

 CARROT. 



INJURING THE LEAVES. 



The Celery Caterpillar. 



Papilio asterias. 

 The life-history of this insect has been discussed 

 at some length in the Introduction (pages 9-11) in 

 connection with Plate I, where its different stages are 

 illustrated. The larvae are handsome and quite con- 

 spicuous, and feed upon the foliage of the various 

 members of the parsley family, including the carrot, 

 •celery, parsnip, etc., sometimes doing considerable 

 injury when left unmolested. The caterpillars often 

 become the victims of certain parasitic insects, but it 

 is said that neither birds nor domestic fowls will eat 

 them, probably because of the disagreeable odor 

 emitted from the peculiar yellow horns situated on 

 the body, just behind the head. The adult butterfly 

 is one of the most beautiful as well as one of the 

 -commonest of its family. 



Remedies. — When young these caterpillars may 

 be destroyed by dusting them with insect powder or 

 buhach. Ordinarily, however, they are not so abun- 

 dant but that a little hand-picking will readily hold 

 them in check. 



