Any of various insect larvae that live and feed within a leaf, including caterpillars, sawfly larvae, beetle and weevil grubs, and dipteran maggots.

许在叶中生活并取食昆虫幼虫统称，包括毛虫、叶蜂幼虫、虫和象虫以及双翅类昆虫蛆。

This is the first reliable trematothoracin sawfly discovered in China and in the Jurassic Period.

这是首次在我国发现可胸茎蜂化石，也是该亚科在侏罗纪首次报道。