Which insect laid these black and white barrel-shaped eggs?
These are the eggs of a harlequin bug (Murgantia histrionica). Harlequin bugs are members of the stink bug family that feed primarily on brassicas, such as collards, kale, cabbage, and broccoli, as well as weeds like wild mustard, bittercress, pepperweed, and shepherdspurse. Like the eggs, adults sport a unique, colorful pattern, making them easy to identify.
Harlequin bugs have piercing/sucking mouth parts and create a unique damage pattern as they feed. While this damage is unlikely to kill a larger plant, the spots make the leaves unsightly and unmarketable. To manage harlequin bugs, small and home gardeners can hand-pick them from the plants. For larger growers, use the same materials you would use to manage other stink bug species when the need arises.
This week’s question is from Justin Ballew, Extension Fruit and Vegetable Research Associate.
