In the present paper,one new species of the genus CoptotettixBolivar and first discovered female Ergatettix minutus Ingrisch are described. Type specimens are kept in the Institute of Zoology,Shaanxi Normal University. Coptotettix spicupennis sp. nov. (Fig. 1)。This new species is close to Coptotettix longtanensis Zheng et Jiang, 2004, but differs in: 1)vertex protruding before the anterior margin of eyes; 2)antennae inserted the lower one third of anterior margin of eyes; 3)lateral ocelli placed upper one third of anterior margin of eyes; 4)humeral angle obtuse rounded; 5)with a pair long and slightly curved longitudinal keels between shoulders; 6)lower margin of midfemur straight; 7)hind margin of subgenital plate of female with a triangular protuberance in the middle.Length of body: ♂7.0~8.0 mm, ♀10.0~10.2 mm; length of pronotum: ♂8.0~8.5 mm, ♀9.0~9.5 mm; length of hind femur:♂5.0~5.5 mm, ♀6.5~7.0 mm. Holotype ♀, Xizang,Motuo, 29°1′N,95°4′E, 1 300 m, 2003Ⅷ15, collected by Ren Guodong; Paratypes, 1♀1♂,same date as holotype; 2♂Xizang,Motuo, 1 100 m, 2003Ⅷ14, collected by Ren Guo-dong.Etymology: The specific name is derived from the Latin "spicu" and "pennis".