蠼

* 〔～螋〕昆虫，体扁平狭长，黑褐色，前翅短而硬，后翅大，折在前翅下，有些种类无翅，尾部形状像夹子，多生在潮湿的地方，为害家蚕

(translated) used in "蠼螋 (qúsōu)", referring to an insect with a flattened and elongated, dark brown body; characterized by short and hardened forewings, large hindwings folded underneath, and a tail section shaped like pincers; mostly found in damp places and harmful to silkworms