LARGE, SUCKING BUGS INJURING FOLIAGE 



191 



are laid in batches on the under side of a leaf, and are orange or red in 

 color. They are easily seen. 



The adults hibernate in old vines or other shelter. There is one 

 brood annually in the North, but two or even three in the South. 



The young may be killed by spraying with 10 per cent kerosene 

 emulsion. Egg masses should be destroyed. The adults may be 

 trapped under bits of Ijoard or stones, where they should be looked for 

 frequently. Destroy the vines as soon as the crops are off, in order 

 to kill the bugs not yet matured. No contact spray is known that 

 will kill the adults without also seriously injuring the vines. 



The Harlequin Cabbage-bug {M urgaiitla hidrionica Hahn.) 



Cabbages, cauliflower, and 

 related plants, in the South 

 Atlantic states, are badly 

 injured or destroyed by a 

 small, gaudily colored bug, 

 variously known as the 

 "calico back," or "terrapin 

 bug." The leaves of the 

 plants attacked shrivel and 

 turn brown, and often the 

 plant is killed outright. 



The adult l)ug is one 



Fig. 238.— Til. ■ ll.ii.Mnin Cul)- 

 bagc-bug. Eggs, nymph, and 

 adult. Original. 



fourth of an inch long, broad, 

 shield shaped, and strikingly 

 marked with red or yellow, and 

 deep blue. The 3'oung, or 

 nymphs, are similar in appear- 

 ance. Close search of the leaves 



Fig. 239. — Eggs of the Harlequin Cab- 

 bage-bug. Enlarged. Original. 



