《论衡·卷十六·商虫篇》
旱田中经常有田鼠，水田中经常有鱼、虾、蟹之类动物，都造成谷物的灾害。有的虫子有时很少出现，而且为害的时间很短暂，有的经常出现而造成灾害，同类如此之多，它们应和什么样的官吏呢？
陆田之中时有鼠，水田之中时有鱼，虾蟹之类，皆为谷害，或时希出而暂为害，或常有而为灾，等类众多，应何官吏？
Dry farmland often has moles, while paddy fields often have animals such as fish, shrimps, and crabs, all of which can damage the grain. Some worms only appear occasionally, and the damaging time they cause is very short, while some appear frequently and cause major damage; there are so many similar species of worms, which type of officials do each of them represent?