Shellac is the commercial resin marketed in the form of amber flakes, made from lac, the secretion of the familiy of lac-producing insects, though most commonly from the cultivated Kerria lacca, found in the forests of Assam and Thailand. Origin Once it was commonly believed that shellac was a resin obtained from the wings of an insect (order Hemiptera) found in India. In actuality, shellac is obtained from the secretion of the female insect, harvested from the bark of the trees where she depos… (More on Shellac)