"Although the bulk of world raw silk supply is spun by the domesticated silk moth, Bombyx mori, there are other sericigenous insects which spin cocoons and their yarn is equally pure silk. There silks are known as wild silk as differentiated from cultivated ‘mulberry silk’. The wild silk moths are abundantly found in remote regions, hilltops and forest interiors in [Burma, China, India, Korea, equatorial Africa and Southeast Asia. In fact, according to one authority, there are between four to five hundred different types of wild moths spinning silk cocoons; but only a few of these moths have commercial values."