Key to Geogarypus Chamberlin, 1930 species reported from Brazil

1 Chela of the pedipalp with eight trichobothria; trichobothrium isb present........................................ (2)

- Chela of the pedipalp with seven trichobothria; trichobothrium isb absent; femur pedipalpal 3.5× (male, 3.5×); patella 2.3× (male, 2.2×); leg I and IV diplotarsate....................................................... G. gollumi sp. nov.

2 Femur of pedipalp more than 3.0× as long as wide, chela of pedipalp 1.6–3.2×; movable finger more than 40–48 teeth, fixed finger with 27–32 teeth............................................................................... (3)

- Femur of pedipalp 3.0× longer than wide; pedipalp chela 1.8× (see Mello-Leit„o, 1937; fig.1); movable finger with 38 teeth, fixed finger with 32 teeth........................................................... G. formosus Mello-Leit „o

3 Femur of pedipalp 3.1–3.5× as long as wide; patella 2.1–2.4× longer than wide; fingers 1.1–1.2× longer than hand with pedicel............................................................................................. (4)

- Femur of pedipalp more than 3.5× as long as wide; patella thinner, 2.4× longer than wide (see Balzan, 1890; fig. 22); finger shorter (0.54 mm) than the hand with pedicel (0.57 mm) and longer than the chela (0.49 mm)...................................................................................................... G. cuyabanus (Balzan, 1887)

4 Femur of the pedipalp 3.0–3.3×, patella 2.4–2.5× as long as wide (see Mahnert, 1979; fig. 87); fingers (0.47–0.48 (0.49–0.55)) longer than hand (0.40–0.42 (0.45–0.49)) with pedicel; fixed finger with 41–48 teeth (distal 1–2 small, half teeth arranged in two rows), movable finger with 27–31 teeth (distal half only pointed) (see Mahnert, 1979; fig. 88b)...................................................................................................... G. amazonicus Mahnert

- Femur of pedipalp 3.2×, patella 2.3× as long as wide (see Beier, 1932a; fig. 258); chela finger (0.52 mm) as long as hand (0.49) with pedicel; fixed finger with about 27 teeth, movable finger with 22 teeth (more or less clearly pointed on the base)....................................................................................... G. paraguayanus Beier