Rathbunaja, Ng & Forges, 2015

Ng, Peter K. L. & Forges, Bertrand Richer De, 2015, Revision of the spider crab genus Maja Lamarck, 1801 (Crustacea: Brachyura: Majoidea: Majidae), with descriptions of seven new genera and 17 new species from the Atlantic and Indo-West Pacific, Raffles Bulletin of Zoology 63, pp. 110-225 : 210

publication ID	https://doi.org/ 10.5281/zenodo.5384590
publication LSID	lsid:zoobank.org:pub:40BCDD62-D35E-46D1-95A3-2CC0DF219DEE
DOI	https://doi.org/10.5281/zenodo.5466829
persistent identifier	https://treatment.plazi.org/id/0598684B-FA6C-4BCB-81EB-289285178B6A
taxon LSID	lsid:zoobank.org:act:0598684B-FA6C-4BCB-81EB-289285178B6A
treatment provided by	Valdenar
scientific name	Rathbunaja
status	gen. nov.

Treatment

Key to species of Rathbunaja View in CoL n. gen.

1. Pseudorostral spines short, weakly diverging, almost subparallel ( Figs. 59F View Fig , 62A View Fig ); ambulatory legs (notably merus and propodus) short ( Figs. 59F View Fig , 62D–G View Fig ); Papua New Guinea........................ ....................................................... Rathbunaja brevipes View in CoL n. sp.

– Pseudorostral spines long, diverging; ambulatory legs (notably merus and propodus) relatively longer ...................................2

2. Carapace relatively broad ( Fig. 60 View Fig ); distal spines on basal antennal article relatively longer, more strongly diverging ( Fig. 61G View Fig ); ischium of third maxilliped proportionately longer ( Fig. 63E–H View Fig ); male telson proportionately broader, appears semicircular ( Fig. 64E View Fig ); G1 very long, strongly curved, more slender, tip bent inwards ( Fig. 67A–D View Fig ); Philippines............... ............................................................ Rathbunaja ursus View in CoL n. sp.

– Carapace relatively narrower ( Fig. 59A–E View Fig ); distal spines on basal antennal article relatively shorter, less diverging ( Fig. 61A, C, E View Fig ); ischium of third maxilliped proportionately shorter ( Figs. 62C View Fig , 63A–D View Fig ); male telson more triangular in shape ( Fig. 64A–C View Fig ); G1 gently curved, not elongate, tip straight ( Figs. 66 View Fig )............................................................................................3

3. Ambulatory merus relatively longer, more slender ( Figs. 59C, E View Fig , 65F View Fig ); G1 relatively more strongly curved, distal part relatively longer ( Fig. 66H–M View Fig ); Japan..................................................... ....................................... Rathbunaja kiiensis (T. Sakai, 1969) View in CoL

– Ambulatory merus relatively shorter, stouter ( Figs. 59A, B View Fig , 65B, D View Fig ); G1 gently curved, distal part relatively shorter ( Fig. 66A–G View Fig ); Philippines.. Rathbunaja bisarmata ( Rathbun, 1916) View in CoL