Sayanozercon, Marchenko, 2025

Marchenko, Irina I., 2025, The new genus Sayanozercon (Acari: Mesostigmata: Zerconidae) with description of five new species from South Siberia mountains (Russia), Zootaxa 5647 (2), pp. 151-195 : 191

Key to the species of the genus Sayanozercon gen.nov. (females)

1. Podonotal gland gdz5 (po3) located near to posterior margin of podonotal shield, close to line connecting insertions of setae s5 and z6....................................................................... Sayanozeron mikhaili sp. nov.

- Podonotal gland gdz5 (po3) located close and anterior to line connecting insertions of setae z5 and s5.................. 2

2. Setae s1 presented in podonotal shield, J -series with five pairs of setae on opisthonotal shield, mid-size of idiosoma 445–500 μm................................................................................................. 3

- Setae s1 lost in podonotal shield, J -series with four pairs of setae on opisthonotal shield, large size of idiosoma 540–575 μm 4

3. Opisthonotal gland gdZ1 (Po2) located anterolateral to seta Z1, setae Z3, S2–S4 short, do not reach beyond edge of opisthonotal shield.............................................................................. S. adelaidae sp. nov.

- Opisthonotal gland gdZ1 (Po2) located close to line connecting insertions of setae Z1 and Z2, setae Z3, S2–S4 long, reach beyond edge of opisthonotal shield........................................................ S. shoricus sp. nov.

4. J -series of opisthonotal shield with four pairs of setae, J3 lost; J4 and J5 microsetae, posterior pair of setae J5 do not reach posterior edge of opisthonotum......................................................... S. mariannae sp. nov.

- J -series of opisthonotal shield with four pairs of setae, J5 lost, setae J3 and J4 long, reach beyond the posterior edge ofopisthonotum......................................................................... S. ergaki sp. nov.