A new species Loboscelidia longivena Li & Xu sp. nov. is described from Zhejiang, China. This new species resembles L. levigata Yao, Liu & Xu but can be characterized by the triangular frontal projection, R1 shorter, cu-a longer and mid femoral flange shorter in L. longivena sp. nov. A key to males of the Chinese species of the genus Loboscelidia is provided.