Cyrtomaia largoi Richer de Forges and Ng, 2007

Takeda, Masatsune, Ohtsuchi, Naoya & Komatsu, Hironori, 2021, Crabs (Crustacea, Decapoda) from the Sea off East and Southeast Asia collected by the RV Hakuhō Maru (KH- 72 - 1 Cruise) 1. Sulu Sea and Sibutu Passage, Bulletin of the National Museum of Nature and Science. Series A, Zoology 47 (2), pp. 65-97 : 82-83

publication ID	https://doi.org/ 10.50826/bnmnszool.47.2-65
publication LSID	lsid:zoobank.org:pub:09E0EFF3-ABE7-43D7-AA85-DA3BF08E47B9
DOI	https://doi.org/10.5281/zenodo.12759970
persistent identifier	https://treatment.plazi.org/id/03CF87EE-FF9B-D653-B1A5-FC0BFE17BE0C
treatment provided by	Felipe
scientific name	Cyrtomaia largoi Richer de Forges and Ng, 2007
status

Treatment

Cyrtomaia largoi Richer de Forges and Ng, 2007 View in CoL

( Fig. 12D–E View Fig )

Material examined. RV Hakuhō Maru KH-72-1 cruise, sta. 20 (Sibutu Passage; 05°40.9′N, 119°46.3′E – 05°43.1′N, 119°47.0′E; 460–514 m deep); otter trawl; 10 June, 1972; 1 ˁ ( Fig. 12E View Fig ) ( CB 7.7 mm excluding branchial spines; CL 8.3 mm excluding pseudorostral spines), NSMT-Cr 28991; 1 ˂ ( Fig. 12D View Fig ) ( CB 22.7 mm; CL 20.9 mm), NSMT-Cr 28974 GoogleMaps .

Remarks. The specimens at hand agree well with the original description. This species is readily distinguished from congeners by having subparallel pseudorostral spines. In the smaller male specimen ( Fig. 12E View Fig ), the pseudorostral spines are proportionately shorter and not subparallel, and also the protogastric spines are slightly divergent as noted by Richer de Forges and Ng (2007).

According to Richer de Forges and Ng (2007), C. suhmi Miers, 1886 , C. curviceros Bouvier, 1915 (at present known as a junior subjective synonym of C. suhmi ), C. maccullochi Rathbun, 1918 and this species form a group commonly lacking the intermediate ocular spines and preocular spines. However, our specimens, as well as the holotype and also the holotype of C. suhmi , have very small but distinct intermediate ocular spine ( Fig. 12D View Fig in the present study; Guinot and Richer de Forges 1982, fig. 11A; Richer de Forges and Ng, 2007, fig. 4B–D, 5A).

Distribution. Bohol Sea (type locality) and Sulu Sea, central Philippines; Taiwan (Richer de Forges et al., 2009), South China Sea ( Lee et al., 2017); 437–443 m deep.