148 PESTS OF GARDEN AND FIELD CROPS 
Prompt application of Paris green or arsenate of lead will check 
the pest. Apply early before the bean pods are well formed. Clean- 
ing up rubbish in the fall is of value. The destruction of weeds that 
belong in the same botanical family is an additional remedial measure. 
The Bean Lady Beetle (Epilachna corrupta Mauls.) 
In some of the Western states beans are subject to injury by this 
species. Early in the season the foliage is eaten by the adults, which 
have hibernated. These are fol- 
lowed by the larve, and later a 
new generation of adults is at 
work. As soon as the bean pods 
appear they are attacked as well 
as the leaves. The larve skele- 
tonize the leaves, working on the 
under side, while the adults de 
vour the leaf tissue entire. 
The adult beetle is broadly oval, 
one third of an inch long, light 
brown in color, and marked with 
Fic. 148.— The Bean Lady Beetle. 
Enlarged and natural size. Origi- elght dots on each wing cover. 
nal. The larva is about the same size, 
yellowish, and covered with short, branched spines. There is one 
generation annually. 
Arsenicals, either Paris green or arsenate of lead, will Mill both larve 
and adults. The applications must be made to the under side of the 
leaves. 
The Squash Lady Beetle (Epilachna borealis Fab.) 
Both the insect and its work are characteristic. The adult beetle 
is one third of an inch long, nearly as wide, yellowish to brownish in color, 
and marked with seven large black dots on each wing cover. In addition 
there are four small dots on the thorax. The eggs are yellowish, and are 
laid in clusters on the leaf. The larva is oval in shape. a half inch long, 
and covered with rather long, branching spines. The beetle marks 
out a circular area on a leaf and then feeds within this. The larva 
