242 MANUAL OF VEGETABLE-GARDEN INSECTS 

 The Sweet Potato White-Fly 



Bcmisia inconspicua Quaintance 



In southern Florida sweet potatoes, especially the late crop, 

 are often subject to very serious injury by this species of white- 

 fly, which in general appearance is similar to the common green- 

 house white-fly. The eggs are deposited on the underside of 

 the leaves and hatch in about a week. The nymphs are often 

 abundant enough nearly to cover the entire under surface of 

 the leaf, sucking out the sap and sometimes killing the plant. 



This white-fly may be controlled by one or two applications 

 of soap solution or kerosene emulsion applied to the underside 

 of the leaves. 



Other Sweet Potato Insects 



Garden web worm : 18 

 Nezara viridula .•43 ■ 

 Yellow bear caterpillar : 357 

 Carrot beetle : 185 

 Potato aphis : 150 

 Garden flea-hopper : 77 

 Dark-sided cutworm : 268 

 Striped cutworm : 270 

 Dingy cutworm : 271 

 Clay-backed cutworm : 274 

 Variegated cutworm : 276 

 Army-worm : 288 

 Fall army-worm : 292 

 Ash-gray blister-beetle : 306 

 Pale-striped flea-beetle : 321 

 Sweet potato flea-beetle : 332 

 Root-knot nematode : 338 

 Corn and cotton wireworm : 349 



