sawfly

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.

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Japanes elm sawfly is a kind of main phyllophagous insect to Ulmus L.

榆叶蜂是巴盟榆树的主要食叶害虫,发展速度快、食叶量大,危害严重.

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