One new species of the genus Mazarredia Bolivar, Mazarredia nigripennis sp. nov. is described. This new species can be distinguished from Mazarredia brachynota Zheng, 2005 by： 1） width of longitudinal furrow narrower than width of first segment of antennae; 2） with a pair short longitudinal keels between shoulders; 3） hind process of pronotum slightly surpassing the top of hind femora and reaching the base of hind tibia; 4） hind wings reaching the top of hind process; 5） width of midfemur wider than the width of tegmina. Type specimens are deposited in the Institute of Zoology, Shaanxi Normal University, China （2♂） and Department of Chemistry and Life Science, Hechi University, China （1 ♂）.
The morphological characteristics of the hind wing venation of tetrigids were analyzed on the basis of morphometric measurement, with 20 species and 18 different variables selected for this study. Results show that three principal components have a higher load at the length between the starting point of the costal vein and the tip of the fourth anal vein, between the tip of the costal vein and the tip of the third anal vein, and between the tip of the costal vein and the tip of the eleventh anal vein. There exists a contrast between wing length and width.
