Phytomastax

Ge, Jun-Jie, Agrippine, Yetchom Fondjo Jeanne, Xu, Sheng-Quan & Huang, Huateng, 2021, Description of three new species of Gomphomastacinae (Orthoptera Eumastacoidea) from the east of Qinghai-Tibet plateau, China, Zootaxa 5068 (3), pp. 419-427 : 424

Key to Phytomastax species of China

1. Antennae 21 segments................................................................................. 2

1’ Antennae exceed 21 segments........................................................................... 3

2. Antennae 21 segments, equal length to the front femur, apex of hind femur with 3 spines, first segment of hind tarsus above with 5 inner and outer teeth; hind tibia with 22 spines on outer side and 20 on inner side. Phytomastax tianshanensis Zheng et Xi, 1994 .

2’ Antennae 21 segments, distinctly longer than front femur, apex of hind femur with 5 spines, first segment of hind tarsus above with 3 inner and 4 outer teeth; hind tibia with 17 spines on outer and inner sides....... Phytomastax pentaspinula sp. nov.

3. Antennae 22 segmented, apex of hind femur with 1 spine, first segment of hind tarsus above with 8 teeth; hind tibia with 15~16 spines on outer side and 18~20 on inner side.................................. Phytomastax qinghaiensis Yin, 1984 .

3’ Antennae 24 segments, apex of hind femur with 3 spines, first segment of hind tarsus above with 3 teeth; hind tibia with 15~19 spines on outer side and 14~17 on inner side................................... Phytomastax meiospina Chen, 1981 .