Plagiognathus is a small insect belonging to the family Miridae, commonly known as plant bugs. They are typically less than 5 mm in length and have a slender body shape. Plagiognathus species are known for their distinctive coloration, often displaying a combination of black, yellow, and red markings. These insects are found in various habitats, including grasslands, forests, and agricultural fields, where they feed on plant sap using their piercing-sucking mouthparts.