Key to the species of Pseudolanurgus

1. Interstrial setae mainly hair-like, on declivity mixed with fine bristles; female frons very deeply concave (males less concave), in lateral view clearly notched near the acute dorsal edge (Democratic Republic of the Congo)............... P. bugekae

- Interstrial setae mainly spatulate, on disc sometimes bristle-like; female frons flattened or lightly concave, never distinctly notched in lateral view, dorsal edge of impressed area rounded................................................. 2

2. Female frons nearly glabrous, with only minute scattered setae; on each side between mandible base and antennal insertion a vertical row of long straight setae (United Republic of Tanzania)........................................ P. mystax

- Female frons near vertex with either a transverse crest or a longer tuft of setae; area between mandible base and antenna with only short scant setae (Madagascar)...................................................................... 3

3. Female frons with a broad triangular tuft of long recumbent setae from vertex to near level of antennal insertion.................................................................................................. P. harunganae

- Female frons with a short crest of setae along dorsal margin of the frons......................................... 4

4. Interstriae with small sharp granules on declivity; elytral apex subacuminate; female scapus rounded with short setae................................................................................................ P. asperatus

- Interstriae smooth, elytral apex with only faint inflation; female scapus triangular with long setae on its inner side................................................................................................ P. minuttissimus