Harlequin Bug

Natural Habitat

Harlequin bugs are commonly found in gardens, agricultural fields, and areas where their host plants (cruciferous vegetables) are grown. They prefer warm climates and are prevalent in warmer regions.

Diet & Feeding

The Harlequin Bug is a sap-sucking insect. It feeds primarily on cruciferous plants (Brassicaceae family) such as cabbage, broccoli, kale, collards, mustard, radishes, and turnip. They use their piercing-sucking mouthparts to extract sap from plant tissues.

Behavior Patterns

Harlequin bug adults and nymphs feed on foliage, stems, and seed pods of host plants. They can be found in large aggregations, especially during warmer months. When disturbed, they may emit an unpleasant odor as a defense mechanism.

Risks & Benefits

The main risk associated with Harlequin Bugs is the damage they cause to cruciferous crops. Their feeding can lead to wilting, yellowing, and stunted growth of plants, significantly reducing yields for gardeners and farmers. They typically do not pose a direct risk to humans (e.g., bites or stings). From an ecological perspective, they serve as a food source for some predatory insects and birds, but their pest status often outweighs any significant benefits.

Identified on: 7/2/2025