Key to species of the genus Spinturnix of Kazakhstan and adjacent countries

Females

1. Dorsal opisthosoma without setae.................................... S. otonycterisi Dundarova & Orlova, sp. nov.

- Dorsal opisthosoma with four or more pairs of setae......................................................... 2

2. With four pairs of dorsal setae posterior to stigmata.................................... S. kolenatii Oudemans, 1910

- With more than 20 pairs of dorsal setae posterior to stigmata.................................................. 3

3. Dorsal opisthosoma with 20–40 pairs of setae, anterior and posterior ends of dorsal shield with a large rounded projection................................................................................ S. acuminata (Koch, 1836)

- Dorsal opisthosoma with 40 or more pairs of setae, dorsal shield oval, without projections........................... 4

4. Dorsal opisthosoma with 45–65 pairs of setae, genital setae not on genital shield............... S. myoti (Kolenati, 1856)

- Dorsal opisthosoma with 40–45 pairs of setae, genital setae on genital shield............... S. mystacina (Kolenati, 1857)