Sesame bugs are absolutely harmless. Sesame worm, also called bean worm, is a mollusk that eats bean leaves and drinks manna for a living. Except water, most of its dry matter is protein, accounting for 63.2% of its dry weight. It is rich in calcium, phosphorus, magnesium, iron and other trace elements needed by human body, and the content of vitamin E is also very high.

Its body length is about 45 mm, its wings are spread out about 200 mm, its body and wings are yellow-brown and fluffy, its back head and chest midline are dark brown, its ventral back edge has brown-black stripes, and its front wings are long and narrow.