sawfly

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

许多中活并取食的昆虫幼虫的统称，包括毛虫、幼虫、甲虫和象甲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.

这是首次我国发现可靠的陷胸茎化石，也是该亚科纪的首次报道。