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

许多在叶中活并取食的昆虫幼虫的统称，包括毛虫、叶幼虫、虫虫以及双翅类昆虫的蛆。

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靠的陷胸茎化石，也是该亚科在侏罗纪的首次报道。