How to distinguish male and female cockroaches: Male cockroach is relatively thinner but longer, with a ventral spine and fully developed wings reaching the rear; Female has shorter wings and no ventral spine.

• 蟑螂雌雄的区分：雄虫体形比较瘦小，细长，翅发达至尾端，具有腹刺；雌虫翅较短，无腹刺。