Key to the species of Cossyphodes in South Africa

1 Eyes completely absent, without ocelli.................................................................... 2

– Eyes present, sickle-shaped, composed by two rows of dark ocelli.............................................. 3

2 Head without keels or tubercles, pronotum and elytra with extinct inner keels and with feeble external keels...... C. braunsi

– Head with weak keels and tubercles, pronotum with distinct keels and additionally with distinct medial keel, elytra with dis- tinct keels and secondary keels............................................................... C. caecus sp. n.

3 Elytra without secondary keels and extinct inner main keel present only in the anterior quarter of elytra, pronotum with only traces of a medial keel.................................................................... C. andreaei sp. n.

– Elytra with distinct secondary keels, pronotum with distinct medial keel.......................................... 4

4 Elytra more narrowed towards tip, dorsal keels high (Fig. 24)........................................... C. vandami

– Elytra broader towards tip, dorsal keels low (Figs. 12–13)........................................... C. wasmanni