Key to the known Iranian species of the genus Pseudosinella (adapted from Fjellberg, 2007)

1 Eyes absent, no dark eye spots. ........................................................................................................................ 2

— Eyes present, eye spots dark. ............................................................................................................................. 3

2 Unpaired distal tooth of unguis set between the paired teeth. Tenent hair short, pointed. ....................... .................................................................................................................... P. immaculata (Lie Pettersen, 1896)

— Unpaired distal tooth set beyond the paired teeth. Tenent hair long, clavate. ...... P. decipiens Denis, 1924

3 Two eyes per side. .............................................................................................................................................. 4

— Three or more eyes per side. .............................................................................................................................. 6

4 Empodium without teeth. .............................................................................. P. imparipunctata Gisin, 1953

— Empodium with teeth. ........................................................................................................................................ 5

5 Maximum length 1.2 to 1.39. ....................................................................................... P. alba (Packard, 1873)

— Maximum length 0.61 to 0.79. ............................................................................... P. baghdadica Rusek, 1981

6 Three eyes per side. .............................................................................................. P. sexoculata (Schött, 1902)

— Four or more eyes per side. ................................................................................................................................ 7

7 Four eyes per side. ............................................................................................... P. octopunctata Böner, 1901

— Six eyes per side. .......................................................................................... P. duodecimpunctata Denis, 1931