Mesogastrura, Bonet, 1930

Chang, Gyu-Dong, Kim, Sun-Sook & Park, Kyung-Hwa, 2022, One new species and one new record for the genus Mesogastrura (Collembola, Hypogastruridae) from Korean caves, with DNA barcodes, Zootaxa 5222 (4), pp. 325-342 : 340

Key to world species of the genus Mesogastrura

The key is based on Thibaud et al. (2004).

1 Head without eye................................................................ M. coeca Cassagnau, 1959

- Head with eyes...................................................................................... 2

2 Eyes 5 + 5; a 2 chaeta on Th III absent.................................................. M. libyca ( Caroli, 1914)

- Less than 5 + 5 eyes; a 2 chaeta on Th III present............................................................̔3

3 Eyes 2 + 2 or less............................................................... ̔ M. ojcoviensis ( Stach, 1919)

- Eyes 3 + 3 or 4 + 4...................................................................................̔4

4 Empodial filament reaching 1/3 of the inner edge of the claw. Abd I–III 1 + 1, rarely 2 + 2 in m-row............................................................................................. ̔ M. boneti ( Tarsia in Curia, 1941)

- Empodial filament reaching about the middle of the claw. Abd I–III 5 + 5 in m–row.............. M. seotalensis sp. nov.