sentences:  Harlequin bugs are phytophagous insects.Adults and nymphs feed on the stems and leaves of plants such as cabbage, broccoli, kale, turnip, radish, horseradish, mustard and rapeseed, and often cause blotching by their piercing-sucking feeding.These plants are economically important and are abundant in crop fields but when they are not in production, harlequin bugs are able to feed on wild plants as well.