PEA AND BEAN INSECTS 69 



many cases the plants are completely defoliated and the entire 

 crop is ruined. The beetles also have the habit of eating into 

 and destroying the green pods. 



Control. 



The bean ladybird may be controlled by spraying the plants 

 with arsenate of lead (paste), 2 to 4 pounds in 50 gallons of 

 water. In localities in which the beetle is annually destruc- 

 tive, much injury may be aVoided by planting early so that 

 the crop will mature early enough to escape serious injury. 

 Clean farming to eliminate hibernating shelter for the beetles 

 and a proper rotation of crops will accomplish much to prevent 

 loss. In the home garden, hand-picking the beetles and eggs 

 may be practiced to advantage and the larvge may be brushed 

 off on the hot ground during the heat of the day where they 

 will perish without regaining the plant. 



References 



Col. Agr. Exp. Sta. Bull. 19, pp. 25-27. 1892. 

 N. M. Agr. Exp. Sta. Bull. 106. 1917. 



The Bean Thrips 



Heliothrips fasciatus Pergande 



In California beans are subject to serious injury by a species 

 of thrips, the mature female of which is about -^ inch in length, 

 with the head and body black. The narrow front wings are 

 black, white at the base and with a white band towards the 

 tip. The antennae are black and white and the wings are 

 fringed with long white hairs. The male is somewhat smaller. 

 Both young and adult thrips are found working on the leaves, 

 stem and pods of the bean, which they injure by piercing the 

 tissues with their sharp mouth-parts and then suck out the 

 juices at the point of injury. The injured leaves turn yellowish 



