Megachernes Beier, 1932

Genus Megachernes Beier, 1932 View in CoL

Megachernes Beier, 1932: 128 View in CoL ; Beier, 1933: 518; Beier, 1948: 476; Morikawa, 1960: 144; Harvey, 1991: 599.

Type species: Chernes grandis Beier, 1930 , by original designation.

Key to the Chinese species of Megachernes

1. Leg IV femur + patella with numerous glandular microsetae........................... M. glandulosus Mahnert, 2009 View in CoL

- Leg IV femur + patella without glandular microsetae......................................................... 2

2. Male pedipalpal patella with hump................................................. M. tuberosus Mahnert, 2009 View in CoL

- Male pedipalpal patella without hump..................................................................... 3

3. Pedipalpal femur less than 4.00 times longer than board....................................................... 4

- Pedipalpal femur more than 4.00 times longer than board..................................... M. titanius Beier, 1951 View in CoL

4. Leg IV femur + patella more than 4.00 times longer than deep.................................................. 5

- Leg IV femur + patella less than 4.00 times longer than deep................................................... 6

5. Movable chelal finger with 9 retrolateral accessory teeth; all blades of rallum smooth..... M. himalayensis (Ellingsen, 1914) View in CoL

- Movable chelal finger with 21 retrolateral accessory teeth; only distal blade of rallum denticulate.................................................................................................... M. vietnamensis Beier, 1967 View in CoL

6. Only distal blade of rallum denticulate; st situated closer to t than to sb........................ M. grandis (Beier, 1930)

- All blades of rallum denticulate; st situated closer to sb than to t................................ M. biyunensis sp. nov.