1	Two pairs of spermathecae (Fig. 5A, B, D)	2
–	One pair of spermathecae (Fig. 5C)	E. wukong sp. nov.
2	The ratio of the length of the inner spermathecae to the outer spermathecae is almost 1 : 3 (Fig. 5D)	E. xuanzang sp. nov.
–	The ratio of the length of the inner spermathecae to the outer spermathecae is almost 1 : 1 to 1 : 2 (Fig. 5A, B)	3
3	Spermathecae weakly sclerotized (Fig. 5A)	E. davidi
–	Spermathecae strongly sclerotized (Fig. 5B)	E. deltshevi