Key to the species of Foza

1 Terminal article of GO1 tube-shaped; dense setae on sterno-abdominal cavity and pterygostomial region; conspicuous striae present on subhepatic region; cervical grooves short; major cheliped with single fused molar ...................... ................................................... F. raimundi Reed & Cumberlidge, 2006

– Terminal article of GO1 cone-shaped, tapering to a pointed tip; setae lacking on sterno-abdominal cavity and superior part of pterygostomial region; subhepatic region smooth, smooth; cervical grooves long; major cheliped with more than one fused molar ......................................................................... 2

2 Terminal article of GO2 long, straight; anterolateral region of carapace surface smooth; striae present on posterolateral region; postfrontal crest distinct, complete; suborbital, pterygostomial, subhepatic regions smooth, lacking granules at intersection of longitudinal, vertical sutures ................................ ......................................................... F. goudoti (H. Milne Edwards, 1853)

– Terminal article of GO2 long, strongly curved inward at tip; anterolateral region of carapace surface with fields of striae; posterolateral region smooth; postfrontal crest weak, incomplete; suborbital, pterygostomial, subhepatic regions with small field of granules at intersection of longitudinal, vertical sutures ........................................................................... F. ambohitra sp. n.