Harlequin Bug - Margantia histrionica

Harlequin Bug, 3/8 inch           eggs
Clemson University, USDA Cooperative Extension Slide        Whitney Cranshaw, Colorado State University, Serieswww.ipmimages.org                                                     www.ipmimages.org
                 



HOSTS: Cabbage family plants (cabbage, cauliflower, brussels sprouts, broccoli, kohlrabi, kale).

DESCRIPTION: Adults are flat, 3/8 inch long, shield-shaped stink bugs with red and black spotted markings; nymphs look like adults, but are smaller and more round.

LIFE CYCLE: Adults overwinter under debris. They emerge in mid-spring and lay eggs by early summer. After hatching, nymphs feed for two months, by which time they are mature. There can be 1-2 generations per year.

CONTROLS:

Cultural: Destroy crop at harvest; till under debris.

Botanical: Spray with sabadilla or a pyrethrin-rotenone mix.


Missoula County Extension Office; Missoula, Montana 59808 - Updated for 2006