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

许多在叶中生活并取食的昆幼的统称，包、叶蜂幼、和象双翅类昆的蛆。

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蜂化石，也是该亚科在侏罗纪的首次报道。