Eriphia, Latreille, 1817

Koh, S. K. & Ng, Peter K. L., 2008, A Revision Of The Shore Crabs Of The Genus Eriphia (Crustacea: Brachyura: Eriphiidae), Raffles Bulletin of Zoology 56 (2), pp. 327-355 : 349

Key to species of Eriphia

1. Frontal margin either entire or slightly denticulated ............ 2

– Frontal margin prominently denticulated, with at least five well developed denticles ............................................................... 4

2. Prominent spine present on ventral inner margin of basis-ischium of cheliped ..................................... E. scabricula Dana, 1852

– No spine on ventral inner margin of basis-ischium of chelipeds ................................................................................ 3

3. Front deflexed prominently, with frontal lobes significantly inflated ...................... E. granulosa A. Milne-Edwards, 1880

– Front not deflexed prominently, with flattened frontal lobes .. ................................................................................................ 4

4. Outer surface of chela with scattered, rounded granules; G1 with tip gradually tapering, acute ............................................ .................................................. E. gonagra ( Fabricius, 1781)

– Outer surface of chela with flattened densely packed granules; G1 with tip blunt, shaped like a golf club ............................... ................................................ E. squamata ( Stimpson, 1859)

5a. Anterior margin of ambulatory legs densely pubescent ....... 6

– Anterior margin of ambulatory legs slightly or not pubescent ............................................................................................... 7

6. Frontal lobes denticulated, with acute denticles; pubescent ... ................................................... E. verrucosa (Forskål, 1775)

– Frontal lobes tuberculated, with flattened tubercles; not pubescent ............................ sebana (Shaw & Nodder, 1803)

7. Carapace and chela not pubescent; G1 relatively straight, basal part with distinct shelf-like structure on outer surface ........................................................ E. smithii MacLeay, 1838

– Carapace and chela pubescent, with short setae; G1 relatively slender, basal part expanded but without shelf-like structure ............................................................... E. ferox , new species