Cestopagurus

Komai, Tomoyuki, Tsuchida, Shinji & Clark, Malcolm R., 2014, First record of the hermit crab genus Cestopagurus Bouvier, 1897 (Crustacea: Decapoda: Anomura: Paguridae) from the South Pacific Ocean and description of a new species, Zootaxa 3860 (6), pp. 580-588 : 587-588

Key to species of Cestopagurus

1. Right chela with conspicuous spines on dorsal surfaces of dactylus and palm, carpus not concave on mesial surface. Left chela with distinct proximal hiatus between fingers............................................................... 2

- Right chela without conspicuous spines on dorsal surfaces of dactylus and palm, carpus concave on mesial surface. Left chela without hiatus between fingers........................................................................... 4

2. Antennular peduncle not overreaching distal corneal margin. Dactylus of right chela with 2 or more rows of small spines or spinulose tubercles on dorsal surface...................................................................... 3

- Antennular peduncle distinctly overreaching distal corneal margin. Dactylus of right cheliped with 1 row of small spines or spinulose tubercles on midline.......................... C. caeruleus [ Comoro Islands, western Indian Ocean, 6–22 m]

3. Carpus of right cheliped with dorsomesial margin delimited by single or double row of moderately strong spines..........

.................................. C. timidus [Northeastern Atlantic Ocean and Mediterranean Sea, intertidal to 37 m] - Carpus of right cheliped with dorsomesial margin not delimited, though some dorsomesial spines present.................................................................................. C. coutieri [Red Sea, Madagascar, 20–25 m]

4. Carpus of right cheliped with numerous scattered tiny spines or spinulose tubercles on dorsal surface laterally, merus with spines on ventromesial margin. Merus of left cheliped with row of spines on ventromesial margin....................................................................... C. hinepuia n. sp. [Kermadec Arc, South Pacific Ocean, 499 m]

- Carpus of right cheliped without spines or tubercles on dorsal surface laterally, merus unarmed on ventromesial margin. Merus of left cheliped without spines on ventromesial margin..................... C. puniceus [Sagami Sea, Japan, 171–300 m]