1	Male palp with fewer than 5 thickened setae, the most dorsal setae are dispersed, and the length ratio of the embolus to the embolus base is more than 2 : 1 (Fig. 1)	2
–	Male palp with 5–7 thickened setae, all closely appressed one another, and the length ratio of the embolus to the embolus base is almost 1 : 1 (Fig. 1)	E. davidi
2	Male palp with 4 thickened setae, the dorsalmost setae are dispersed and the length ratio of the embolus to the embolus base is almost 2 : 1 (Fig. 1)	E. deltshevi
–	Male palp with 2 thickened setae, the length ratio of the embolus to the embolus base is almost 3 : 1 (Fig. 1)	E. wukong sp. nov.