Garden Insects: Harlequin Bugs


Look for black and red or black and yellow winged beetles that are 1/2 inch long and shaped like a shield. Adults lay tiny eggs in rows or masses on the undersides of leaves that hatch into nymphs. These look like miniature versions of the adult beetles. Both adults and nymphs may overwinter in leaves or yard waste.


Favorite Plants

This insect prefers to feed on horseradish, cabbage, cauliflower, collards, mustard, Brussels sprouts, turnip, kohlrabi and radishes. Depending on the food supply, it may also attack tomatoes, potatoes, eggplants, okra, beans, asparagus, beets, and fruit trees.


Harlequin Bugs cause plants to wilt, turn brown and die by literally "sucking the juices right out of them."

Organic Methods of Control:

Cultural or Mechanical

  • Plow crops under in the fall.

  • Hand pick bugs, nymphs and eggs off of plants.

  • When possible, plant cultivars tolerant of this variety (some radishes and collards).


  • Attract praying mantis to eat adults and nymphs.


  • Spray bugs and nymphs with soap spray.

  • For severe infestations, use pytrethrin sprays as a last resort.

About The Author: Ellen Brown is an environmental writer and photographer and the owner of Sustainable Media, an environmental media company that specializes in helping businesses and organizations promote eco-friendly products and services. Contact her on the web at


Add your voice! Click below to comment. ThriftyFun is powered by your wisdom!

In This Article
Harlequin Bug
Garden Insects: Harlequin Bugs
Home and Garden Gardening Pest Control Garden Insect GuidesAugust 28, 2006
bug spray
Identifying Flying Insects
Smashed bugs on front of car
Cleaning Love Bugs from Cars
Lady Bug on a Green Leaf
Identifying Beneficial Garden Insects
Removing Bugs from Your Car
Removing Bugs from Your Car
Halloween Ideas!
Ask a Question
Share a Post
You are viewing the desktop version of this page: View Mobile Site
© 1997-2016 by Cumuli, Inc. All Rights Reserved. Published by . Page generated on October 21, 2016 at 5:25:42 AM on in 1 seconds. Use of this web site constitutes acceptance of ThriftyFun's Disclaimer and Privacy Policy. If you have any problems or suggestions feel free to Contact Us.
Loading Something Awesome!