SB 

 818 

 C578 

 ENT 



<^^ 



■^, 



io. 103. 



Sr 



Issued June 20, 1908. 



nited States Department of Agriculture, 



BUREAU OF ENTOMOLOGY, 



L. O. HOWARD, Entomologist and Chief of Bureau. 



THE HARLEQUIN CABBAGE BUG. 



(Murr/antia histrionica Hahu.) 



By F. H. Chittenden, 

 Entomologist in Charge of Breeding Ecperimcnts. 



INTROnUCTOKV. 



A moderate-sized red and black plant-bug, variously knoAvn as 

 calico back.'* "" fire bug," and " terrapin bug,'' as well as harlequin 



Fig. 1. — Harlequin cabbage bug (MurganUa histrionica) : a. Adult; 5j egg mass; c, flist 

 stage of nymph; d, second stage; e, third stage; /, fourth stage; o, fifth stage. .Ml 

 enlarged (originah. 



cabbage bug. is the most destructive insect enemy of cabbage and 

 related crops in the southern part of the United States. At one time 

 it was a serious pest northward to New Jersey and westward to Ohio 

 420r).'i— Cir. 10.S— OS 



