Key to species of Pseudohermenias based on the male genitalia

1 Sacculus with basal part of ventral edge strongly projecting, forming an acute process...................... P. ajanensis

- Sacculus with basal part of ventral edge smooth, not projecting................................................. 2

2 Cucullus clavate, with a distinct, narrow stem..................................................... P. hercyniana

- Cucullus elongate ovate, without stem..................................................................... 3

3 Socius a rounded patch on shoulder of tegumen; valva with two large projections medially, length of which approximately equal to the width of the neck of the valva; cornuti a short thorn...................................... P. absimilis sp. nov.

- Socius a drooping, elongate lobe; valva with two small projections medially, length of which less than half the width of the neck of the valva; cornuti a cluster of short spines.................................................. P. linxica sp. nov.