Dorsal sclerite of thorax is called targum. The thoracic targa are called notum. The targum of prothorax is called pronotum, the targum of mesothorax is called mesonotum and the targum of metathorax is called metanotum. Pronotum large, broad and elongated. The dorsal tergum consists of four sclerites. Prescutum, scutum, scutellum and postscutellum.