Key to the species of Pseudocolochirus

1. Conspicuously coloured species with podia in yellow, orange or red bands against a bright blue to purple background; anal teeth conspicuous; body wall ossicles scarce, especially dorsally, comprising small irregular smooth to slightly knobbed plates, usually perforated by one to few holes, in addition to large, thick, multilocular plates with smooth rim ................................................ Pseudocolochirus violaceus (Théel, 1886)

2. Yellowish to beige­brown species, mottled with dark spots and irregular dark blotches; anal teeth present but inconspicuous; body wall ossicles abundant, comprising numerous, thick, multilocular plates with spiny rim ................................................................ ............................................................. Pseudocolochirus unica (Cherbonnier, 1988)