Cryptonura

Key to the species of the genus Cryptonura Cassagnau, 1979 *

* The key is based mainly on Bellinger et al. (2012)

1. Tubercle Di on th. I with 1 chaeta........................................................................ 2

- Tubercle Di on th. I with 2 chaetae....................................................................... 5

2. Chaeta C on head present, mandible with 3 teeth, tubercle Di on abd. V with 3 chaetae.............................. 3

- Chaeta C on head absent, mandible with 6 teeth, tubercle Di on abd. V with 2 chaetae..................................................................................................... C. anthrenoidea (Ellis, 1976) (Greece)

3. Dorsal tubercles round, labral formula: 4/2, 4, group Vi of head with 5 chaetae, colour of body white............................................................................................. C. jubilaria Smolis, 2002 (Poland)

- Dorsal tubercles triangular, labral formula: 0/2, 2, group Vi of head with 6 chaetae, colour of body bluish-gray........... 4

4. Tubercles Di on th. II–III with 2 chaetae, labrum distally ogival, tubercle Dl on head with 5 chaetae..................................................................................................... C. persica sp. nov. (Iran)

- Tubercles Di on th. II–III with 3 chaetae, labrum non-ogival, tubercle Dl on head with 6 chaetae.. C. maxima sp. nov. (Iran)

5. Chaeta C on head absent, tubercles L on abd. II–III with 4 chaetae........ C. dirfysensis Cassagnau & Péja, 1979 (Greece)

- Chaeta C on head present, tubercles L on abd. II–III with other number of chaetae.................................. 6

6. Tubercle De on th. II with 4 chaetae, tubercles L on abd. II–III with 2 chaetae............ C. franzi (Stach, 1951) (Austria)

- Tubercle De on th. II with 3 chaetae, tubercles L on abd. II–III with 3 chaetae... C. kühnelti (Gisin, 1954) (Austria, Ukraine)