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 Author Takeda, Masatsune Department of Zoology, National Museum of Nature and Science, 4 - 1 - 1 Amakubo, Tsukuba, Ibaraki 305 - 0005, Japan E-mail: takeda @ kahaku. go. jp (MT) / h-komatu @ kahaku. go. jp (HK) takeda@kahaku.go.jp Author Ohtsuchi, Naoya International Coastal Research Center, Atmosphere and Ocean Research Institute, The University of Tokyo, 1 - 19 - 8 Akahama, Otsuchi, Iwate 028 - 1102, Japan E-mail: ohtsuchi @ g. ecc. u-tokyo. ac. jp ohtsuchi@g.ecc.u-tokyo.ac.jp Author Komatsu, Hironori Department of Zoology, National Museum of Nature and Science, 4 - 1 - 1 Amakubo, Tsukuba, Ibaraki 305 - 0005, Japan E-mail: takeda @ kahaku. go. jp (MT) / h-komatu @ kahaku. go. jp (HK) takeda@kahaku.go.jp text Bulletin of the National Museum of Nature and Science. Series A, Zoology 2021 2021-05-21 47 2 65 97 journal article 10.50826/bnmnszool.47.2-65 2434-091X 12759907 09E0EFF3-ABE7-43D7-AA85-DA3BF08E47B9 Cyrtomaia largoi Richer de Forges and Ng, 2007 ( Fig. 12D–E ) 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 ) ( CB 7.7 mm excluding branchial spines; CL 8.3 mm excluding pseudorostral spines), NSMT-Cr 28991; 1 ˂ ( Fig. 12D ) ( CB 22.7 mm ; CL 20.9 mm ), NSMT-Cr 28974 . 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 ), 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 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.