Key to the species of Pachysandalus

1 Meso- and metafemur each with blackish apical annulus; lateral margin of corium pale only at base............. P. collaris

- Femora brownish throughout; lateral margin of corium pale throughout length or at base and apex..................... 2

2 (1’) Lateral margin of corium pale throughout length; median process of pygophore thicker, more robust, especially in lateral view...................................................................................... P. orientalis

- Lateral margin of corium pale at base and apex, dark between these spots; median process of pygophore more slender, especially in lateral view......................................................................... P. schoutedeni