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Harlequin bug, Murgantia histrionica (Hahn), is a piercing-sucking pest of brassicaceous crops, particularly in the southern United States. The pest typically completes two to four generations per year, and overwinters as an adult in debris and weeds. Both adults and nymphs feed on aboveground plant tissues, leaving white blotches on leaves. Under heavy feeding pressure, plants can wilt and die. Chemical insecticides such as pyrethroids, organophosphates, carbamates, and neonicotinoids have been used for effective control of harlequin bug adults and nymphs. However, there is potential for cultural control of this pest using trap cropping. This paper reviews the biology and management of harlequin bug.

Harlequin Bug Biology and Pest Management in Brassicaceous Crops