Foza, Reed & Cumberlidge, 2006

Cumberlidge, Neil, Klaus, Sebastian, Meyer, Kirstin S. & Koppin, Jennifer C., 2015, New collections of freshwater crabs from northern Madagascar, with the description of a new species of Foza Reed & Cumberlidge, 2006 (Brachyura, Potamonautidae), and comments on their conservation status, European Journal of Taxonomy 109, pp. 1-15 : 10-11

Key to the species of Foza

1. G1 terminal article widened by raised lobe; s3/s4 incomplete, faint in middle, deep at sides; subhepatic region of carapace sidewall with carinae ........................................ F. manonae sp. nov.

– G1 terminal article slim, not widened; s3/s4 deep, completely crossing thoracic sternum; subhepatic region of carapace sidewall smooth.................................................................................................2

2. Dense setae in pterygostomial region and in sternoabdominal cavity; cervical grooves short; proximal region of fixed finger of major cheliped with single large molar; s6/s7 meeting margins of a 5 in middle of somite ............................................... F. raimundi Reed & Cumberlidge, 2006

– Dense setae lacking in pterygostomial region and in sternoabdominal cavity; cervical grooves long; proximal region of fixed finger of propodus of major cheliped with 3–4 large molars; s6/ s7 meeting margins of a5 at a5/a6 junction...................................................................................3

3. G2 terminal articles straight, long, not hooked over at tips; suborbital region of carapace sidewall with large granules; postfrontal crest complete, distinct ........... F. goudoti (H. Milne Edwards, 1853)

– G2 terminal articles distinctly curved distally, together forming distinctive heart-shape; suborbital region of carapace sidewall smooth; postfrontal crest faint, incomplete .......................................... ....................................................................................... F. ambohitra Cumberlidge & Meyer, 2009