Key to Atemnus species

1. Eyespots absent............................................................................... A. strinatii

- Eyespots present...................................................................................... 2

2. Only pedipalpal femur with granulation.......................................................... A. letourneuxi

- All pedipalpal segments with granulation.................................................................. 3

3. Pedipalpal femur more than 2.2 times longer than deep; carapace without a dark transverse band...................... 4

- Pedipalpal femur less than 2.2 times longer than deep; carapace with a dark transverse band.................. A. syriacus

4. Pedipalpal trochanter with two coniform tubercles.................................................. A. limuensis

- Pedipalpal trochanter at least with one round tubercle......................................................... 5

5. Pedipalpal femur with weakly granulation........................................................ A. neotropicus

- Pedipalpal femur with strongly granulation................................................................. 6

6. Movable finger of chela with about 28 marginal teeth......................................... A. hamiensis sp. nov.

- Movable finger of chela more than 34 marginal teeth......................................................... 7

7. Female pedipalpal patella more than 2.30 times longer than deep; male femur + patella IV less than 3.00 times longer than deep.................................................................................... A. niger sp. nov.

- Female pedipalpal patella less than 2.30 times longer than deep; male femur + patella IV more than 3.00 times longer than deep......................................................................................... A. politus