Key to the currently known Nemaspela species in the Caucasus area, extended from Martens et al. (2021) (based on male specimens)

1 Dorsal apophysis on distal end of 1 st cheliceral article present.................................................. 2

- Dorsal apophysis on distal end of 1 st cheliceral article absent.................................................. 7

2 Dorsal apophysis of 1 st cheliceral article short, being just an inconspicuous, pointed distad-directed lobe; found in several caves in the Sochi area, Russia and Abkhazia, West Georgia ................. N. abchasica (Ljovushkin & Starobogatov, 1963)

- Dorsal apophysis on top of 1 st cheliceral article longer, distinct................................................. 3

3 Dorsal apophysis on top of 1 st cheliceral article longer than the entire 2 nd cheliceral article; found in several caves in Nalchik area, Kabardino-Balkaria, Russia ...................................................... N. kovali Chemeris, 2009

- Dorsal apophysis on top of 1 st cheliceral article shorter than the entire 2 nd cheliceral article........................... 4

4 Dorsal apophysis on top of 1 st cheliceral article globular and knob-like, found in one cave in Abkhazia, Georgia ........................................................................................ N. gagrica Tchemeris, 2013

- Dorsal apophysis on top of 1 st cheliceral article distinctly elongated, longer than broad.............................. 5

5 Dorsal apophysis on top of 1 st cheliceral article slender, sickle-shaped, with distad-directed concavity, longer than breadth of article at its position; found in one cave in Abkhazia, West Georgia ..................... N. birsteini (Ljovushkin, 1972)

- Dorsal apophysis on top of 1 st cheliceral article not sickle-shaped, shorter or conspicuously longer than breadth of article at its position............................................................................................ 6

6 Dorsal apophysis on top of 1 st cheliceral article distinctly bent forward, shorter than breadth of article at its position; found in two caves in Imereti region, West Georgia ...................... N. melouri Martens, Maghradze & Sh. Barjadze, 2021

- Dorsal apophysis on top of 1 st cheliceral article not distinctly bent forward, longer than breadth of article at its position, apophysis distally widened and bilobate; found in caves in Sochi area, Russia ................................................................................................... N. sokolovi (Ljovuschkin & Starobogatov, 1963)

7 Femur of pedipalp S-shaped; found in one cave in Kvemo-Svaneti Region, West Georgia ....................................................................................................... N. femorecurvata Martens, 2006

- Femur of pedipalp straight.............................................................................. 8

8 Penis in dorsal and ventral views relatively stout, glans stout as well, slightly broader than truncus penis; found in one cave in Imereti region, West Georgia ................................. N. prometheus Martens, Maghradze & Barjadze, 2021

- Penis in dorsal and ventral view extremely narrow, glans drawn out and narrow, not broader than truncus penis; found in one cave in Imereti Region, western Georgia ..................................................... N. kotia sp. nov.