116 MANUAL OF VEGETABLE-GARDEN INSECTS 



egfi^plant, tomato and cucurbits by destroying the foliage and 

 by feeding on the blossoms and blossom buds. 



The adults are active during the winter but do not lay eggs 

 until ]March. The egg is oval, pale yellow in color and about 

 ^^0 inch in length. The eggs are laid in the ground near the 

 base of the food plant singly or in clusters of four or five. 

 They hatch in nine to eleven days. The larv?e have been 

 found feeding on the roots of corn, sorghum and beans. The 

 larva becomes mature in about twenty-five days. It is nearly 

 ^ inch in length, light yellow in color with the head and anal 

 plate brownish. The light yellow pupiie, about ^ inch in 

 length, are found in small earthen cells two or three inches 

 below the surface. About eleven days are spent in the pupal 

 stage. In the second generation the time required for the 

 insect to pass through its different stages is somewhat shorter ; 

 viz., egg stage five days, larval stage fourteen days and pupal 

 stage five days. 



Experiments in Texas have shown that truck crops may be 

 I)rotected from the attacks of this beetle by spraying with 

 arsenate of lead (paste), to 10 pounds in 100 gallons of water 

 or bordeaux mixture. 



Two other closely related cucumber beetles, Diabrotica con- 

 nexa Leconte and 7). picticornis Horn, occur in Texas and 

 sometimes attack cucurbits and beans. The latter species 

 deposits its eggs on the under surface of cucumber leaves. 



Reference 

 U. S. Bur. Ent. Bull. 82, pp. 76-82. 1910. 



The Squash Bug 



Anaiin tristis DeGeer 



Throughout the whole United States, cucurbits are subject 

 to the attacks of a large brownish bug that has a highly ofTen- 



