VEGETABLE INSECTS. 



313 



Control. — The nicotine sulphate and soap solution prepared as rec- 

 ommended on page 268, is effective in controlling this insect. 



TOMATO FRUIT FLY. 



This Anthomyid fly lays its small, white eggs in clusters on the 

 fruit of the tomato. At times it is very abundant and deposits eggs 

 on about fifty per cent of the fruit. 



If the fruit is sound the small, white grubs that hatch from the 

 eggs cannot gain entrance, but if there is the slightest wound or crack 

 in the skin they penetrate to the soft pulpy interior, causing it to 



decay by their feeding activities. 



Control. — All craked or decaying 

 fruit should be collected and destroyed. 



OTHER TOMATO INSECTS. 



Laphygma frngiperda, larva burrows 

 in fruit (see Corn, page 288) ; Lepto- 

 glossus go no gar a (see Squash, page 

 307) ; nematodes (see General Feeders, 

 page 274) ; Systena basalis (see Car- 

 rots, page 284) : Xylomeges sunia, de- 

 foliates plants (see Chard, page 287. 



TUENIP. 



Fig. 67. — The Suck Fly {Dicy- 

 ■phus prasinus). Adult. Much 

 enlarged. 



The turnip is attacked by the same 

 insects as the cabbage (see pa^e 281). 



YAUTIA. 

 THE LACE BUG {Corythuca gossypii). 



This delicate little insect with its lacy white wings breeds in 

 colonies on the undersides of the leaves of the ymitia. The nymphs 

 and adults feed by inserting their beaks into the tissue and sucking 

 the juices. This causes the leaves to turn yellow and die. 



Control— Spvay the undersides of the leaves with a nicotine sul- 

 phate and soap spray, prepared as recommended on page 268. 



