A new species of the genus Raphidopus Stimpson, 1858 (Crustacea: Decapoda: Anomura: Porcellanidae) from Peninsular Malaysia, with additional records of R. johnsoni Ng & Nakasone, 1994 from Southeast Asia, and a key to species in the genus
Author
Osawa, Masayuki
Author
Ng, Peter K. L.
text
Zootaxa
2018
2018-06-08
4433
1
111
126
journal article
29925
10.11646/zootaxa.4433.1.6
1fdf27ec-2318-4726-ac75-a4c5e2121634
1175-5326
1287135
4D532EFF-7063-4772-AF77-58F5A8213B44
Key to species of the genus
Raphidopus
Stimpson, 1858
1. Branchial margins of carapace each with 1–3 distinct spines on median part..................
R. ciliatus
Stimpson, 1858
- Branchial margins of carapace without spines................................................................ 2
2. Carpi of chelipeds each with 3 or 4 sharp spines on distal third of posterior margin....
R. persicus
Ng,
Safaie & Naser, 2012
- Carpi of chelipeds unarmed on posterior margins............................................................. 3
3. Carpus of each cheliped usually with blunt longitudinal ridge on midline of dorsal surface. Dactylus of larger cheliped with 2 distinct proximal teeth on cutting edge. Ambulatory legs comparatively stout (in fourth pereopod, 2.4–2.6 and 2.2–2.4 times longer than high on merus and propodus, respectively)..........................................
R. brevipes
n. sp.
-
Carpus of each cheliped without blunt longitudinal ridges on midline of dorsal surface. Dactylus of larger cheliped with 1 distinct proximal tooth on cutting edge. Ambulatory legs slender (in fourth pereopod, 2.8–3.1 and 2.7–3.0 times longer than high on merus and propodus, respectively)...................................................................... 4
4. Eyes comparatively large, reaching lateral limits of orbits. Dactylus of larger cheliped with distinct, blunt tooth on median part of cutting edge, in addition to 1 proximal tooth...................................
R. johnsoni
Ng &
Nakasone, 1994
- Eyes small, not reaching lateral limits of orbits. Dactylus of larger cheliped without prominent tooth on median part of cutting edge...........................................................................
R. indicus
Henderson, 1893