Bombyx mandarina, the wild silkmoth, is an insect from the moth family Bombycidae. It is the closest relative of Bombyx mori the domesticated silkmoth or "silkworm" (properly, this refers to the caterpillars only). Unlike the domesticated relative which is unable to fly or indeed persist outside human care, the wild silkmoth is a fairly ordinary lepidopteran. Its main difference from the domesticated taxon is the more slender body with well-developed wings in males, and the dull greyish-brown color.