中文摘要：

记述采自中国陕西佛龙的瘤[虫责]属Tyloperla1新种：双凹瘤[虫责]Tyloperla bihypodroma Du，sp．nov．，该种与尖突瘤[虫责]Tyloperla attenuata很相近，但前者第8背板近后缘形成1个隆起脊、其中部有1凹陷，后者则在背板中部形成1近圆形的隆起、其上的锥状感觉器比前者多；前者第9背板中央微凹、其前缘骨化明显、极小的锥状感觉器稀少，后者中部有1丛明显的锥状感觉器；前者翅透明，后者翅微烟褐色。新种的模式标本保存在扬州大学昆虫标本馆。

英文摘要：

A new species of the genus Tyloperla from China, Tyloperla bihypodroma, sp. nov., is described. The new species is similar to Tyloperla attenuate, but posterior margin of the new species raised as a ridge, a concavity presented at the middle of the ridge, while in the latter, tergum 8 with center area raised, and sensilla basiconica more than the former; tergum 9 of the new species depressed mesally, margin of the concavity sclerotized distinctly, with thin disky sensilla basiconica, while in the latter, a cluster of sensilla basieonica in the middle of tergum 9 distinctly. The type of the new species is deposited in the Insect Collection of Yangzhou University.