Gymnobisiidae, Beier, 1947

Neethling, J. A. & Neethling, C., 2023, A systematic revision of the South African Gymnobisiidae (Pseudoscorpiones: Neobisioidea), Zootaxa 5256 (6), pp. 501-543 : 508

Key to the Gymnobisiidae species of South Africa

1 Eyes present......................................................................................... 2

1’ Eyes completely absent.......................................... Gymnobisium inukshuk Harvey & Giribet, 2016

2(1) Chelicera with 5 setae on hand........................................................................... 3

2’ Chelicera with 6 setae on hand................................................... Gymnobisium capense sp. nov.

3(2) Chela regular, not wedge-shaped; female chelal hand markedly to significantly more bulbous than male................. 4

3’ Chela compact and wedge-shaped; female chelal hand not markedly more bulbous....... Gymnobisium cuneatum sp. nov.

4(3) Isolated tooth present at base of venom tooth, separate from teeth on lamella...................................... 5

4’ Isolated tooth absent................................................................................... 7

5(4) Isolated tooth at base of venom tooth small; terminal tooth structure on fixed finger with eight strongly sclerotized teeth.... ................................................................................................... 6

5’ Isolated tooth at base of venom tooth large; terminal tooth structure on fixed finger with five strongly sclerotized teeth........................................................................... Gymnobisium megalodontum sp. nov.

6(5) Galea with six to seven rami; chelal fingers longer than chelal hand (without pedicel).................................................................................................. Gymnobisium prionotogladiatum sp. nov.

6’ Galea with eight to ten rami; chelal fingers same length, to shorter than chela hand (without pedicel)..................................................................................... Gymnobisium octoflagellatum Beier, 1947

7(4’) Female chela significantly larger and more bulbous than in male; terminal tooth structure on fixed finger with seven strongly sclerotized teeth......................................................... Gymnobisium hogsbackense sp. nov.

7’ Female chela only somewhat larger and more bulbous than in male; terminal tooth structure on fixed finger with six strongly sclerotized teeth................................................ Gymnobisium quadrispinosum (Tullgren, 1907)