Forsteropsalis, Taylor, 2011

Taylor, Christopher K., 2011, Revision of the genus Megalopsalis (Arachnida: Opiliones: Phalangioidea) in Australia and New Zealand and implications for phalangioid classification 2773, Zootaxa 2773 (1), pp. 1-65 : 48

Key to species of Forsteropsalis

Forsteropsalis grayi has only been described as yet from the female, and as such is not included in this key.

1. Opisthosoma dorsoventrally flattened, with matt white venter; large rounded apophysis on pedipalpal patella in female; medial side of pedipalpal patella and tibia densely setose in both sexes.............................. Forsteropsalis grimmetti

- Opisthosoma not flattened, venter not matt white; small triangular apophysis on pedipalpal patella in both sexes or no apophysis in male; medial side of pedipalpal patella and tibia not densely setose.......................................... 2

2. Cheliceral segment II of male massively inflated, fingers extremely long and bow-shaped............................ 3

- Fingers of chelicerae of male not bow-shaped............................................................... 4

3. Cheliceral segment II (excluding fingers) subtriangular...................................... Forsteropsalis fabulosa

- Cheliceral segment II ovate............................................................. Forsteropsalis tumida .

4. Entire dorsal prosomal plate densely denticulate, including mesopeltidium........................................ 5

- Denticles restricted to anterior propeltidial area and/or anterior corners of prosoma, mesopeltidium unarmed............. 6

5. Broad red stripe from either side of ocularium to anterior margin of prosoma.................. Forsteropsalis inconstans

- Prosoma entirely concolorous............................................................ Forsteropsalis nigra

6. Denticles on anterior corners of prosoma only, remainder unarmed; no apophysis on pedipalpal patella..................................................................................................... Forsteropsalis distincta

- Scattered denticles in anterior propeltidial area; small triangular apophysis on pedipalpal patella....................... 7

7. Cheliceral segment II very slender, not inflated; no denticles on anterior corners of prosoma.......... Forsteropsalis wattsi

- Cheliceral segment II at least mildly inflated; anterior corners of prosoma denticulate................................ 8

8. Tibia II with less than six pseudosegments................................................. Forsteropsalis chiltoni

- Tibia II with more than six pseudosegments............................................... Forsteropsalis marplesi