Two new species of Macrophya Dahlbom(Hymenoptera:Tenthredinidae) with a key to species of the Macrophya annulitibia group from China

中国钩瓣叶蜂属两新种及M.annulitibia种团中国种类检索表(膜翅目:叶蜂科)（英文）

In the genus Macrophya, the annulitibia group is proposed to include five species from China, lnala and Japan. Two new species belonging to this species group are described from China： Macrophya shengi Li ＆ Chu sp. nov. from Sichuan and Macrophya xinan Li ＆ Liu sp. nov. from Tibet and Sichuan. Descriptions and illustrations are given to separate them from the other species of the annulitibia group. A key to all known species of the annulitibia group from China is provided. Type specimens are deposited in the Insect Collection of Central South University of Forestry and Technology, Changsha, Hunan, China.

记述中国钩瓣叶蜂属Macrophya Dahlbom斑胫钩瓣叶蜂种团Macrophya annulitibia group 2新种:盛氏钩瓣叶蜂Macrophya shengi Li&Chu sp.nov.和西南钩瓣叶蜂Macrophya xinan Li&Liu sp.nov.;简要讨论了M.annulitibia group的主要鉴别特征和种类分布概况,编制了M.annulitibia group中国已知种类分种检索表。新种模式标本保存于中南林业科技大学昆虫模式标本室。