A Jewel Bug (Chyrsocoris Stolli)
An iridescent green jewel bug
They are commonly known as jewel bugs or metallic shield bugs due to their often brilliant coloration. They are also known as shield-backed bugs due to the enlargement of the last section of their thorax into a continuous shield over the abdomen and wings. These insects feed on plant juices from a variety of different species, including some commercial crops.Like stink bugs, a vast majority of jewel bugs, both adults and nymphs, are also capable of releasing pungent defensive chemicals from glands located on the sides of the thorax. Typical compounds exuded by jewel bugs include alcohols, aldehydes, and esters. Nymphs and adults often exhibit clustering behavior, being found in large numbers close to each other. This behavior is thought to have an evolutionary advantage. The more individuals present in an area, the stronger the odour of the chemicals released when the bugs are threatened. If this fails, stink bugs will react to threat by flying away or dropping to the ground. The colors are the result of a combination of factors. Some species like Chrsyocoris stockerus and Scutellera nobilis display colors from multiple thin layers of pigmented chitin. Tamil Nadu - India.