not to be confused with the Harlequin Bug of Australia The harlequin cabbage bug (Murgantia histrionica), also known as calico bug, fire bug or harlequin bug, is a black stinkbug of the family Pentatomidae, brilliantly marked with red, orange and yellow. It is destructive to cabbage and related plants in tropical America as well as throughout most of North America, especially the warmer parts of the United States. In addition to cabbage it can be a major pest to crops such as broccoli, radishes and the ornamental flower cleome. Nymphs are active during the summer and in the tropics the bug can achieve three to six generations a year. In the northern range there is only one generation annually and the insects overwinter as adults.