no 



INSECTS INJURIOUS TO VEGETABLES 



(a) is yellow and covered with stout branched spines. Winter 

 is passed in the adult stage, and a single generation has been 

 observed. 



Remedies. — Arsenate of lead is preferable to Paris green for 

 use on beans since, unless great care be taken in the application 

 of the latter, it is liable to scorch the leaves. Kerosene emul- 

 sion has given good results, and is not open to the objection 



Fig. 65.— Bean leaf-beetle, a, Adult beetle; b, pupa; c, larva; d. side view of anal 

 segment of larva; e. leg of same; /, egg. a, b, c, Enlarged about six times; d, e, f, 

 more enlarged. (Author's illustration, U. S. Dept. Agr.» 



of poisoning the plants as in the case of an arsenical. Hand- 

 picking the beetles and eggs on their earliest appearance is a 

 measure of prevention that would compensate for the time and 

 labor in kitchen gardens. 



The Bean Leaf -beetle {Ccrotoma trifnrcata Forst.). — An in- 

 sect of considerable importance in the Gulf States, and in some 

 years farther north is the bean leaf-beetle. It has attracted at- 

 tention by its injuries in New Jersey, Louisiana, Indiana, Dela- 

 ware, Ohio, Maryland, and Virginia. Injury is due to the 

 adult beetle, which eats large, round holes in growing leaves of 

 bean and cowpea, and certain other leguminous plants, including 



