Cyrtomaia suhmii Miers, 1886

Islam, Atikul, Banerjee, Abhishek, Wati, Sisca Meida, Banerjee, Sumita, Shrivastava, Deepti & Srivastava, Kumar Chandan, 2022, Crabs (Crustacea, Decapoda) from the Sea off East and Southeast Asia Collected by the RV Hakuhō Maru (KH- 72 - 1 Cruise) 2. Timor Sea, Bulletin of the National Museum of Nature and Science. Series A, Zoology 48 (1), pp. 5-24 : 13-15

publication ID	https://doi.org/10.50826/bnmnszool.48.1_5
DOI	https://doi.org/10.5281/zenodo.12571407
persistent identifier	https://treatment.plazi.org/id/039387EC-AF51-FF87-FCA3-2C298BE7FB06
treatment provided by	Felipe (2024-06-17 16:56:18, last updated 2024-11-25 19:11:02)
scientific name	Cyrtomaia suhmii Miers, 1886
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Cyrtomaia suhmii Miers, 1886 View in CoL

( Fig. 5B View Fig )

Material examined. RV Hakuhō Maru KH-72-1 cruise, sta. 26 (Timor Sea; 09°27.0′S, 127°58.6′E –09°285.0′S, 127°56.1′E, 610–690 m depth), 3 m beam trawl; June 19, 1972; 1 ♂ with epicaridean parasites in both branchial chambers (NSMT-Cr 29259: CB 31.6 mm excluding branchial spines, CL 26.2 mm excluding pseudorostral spines), 1 ♂ with epicaridean parasite in right branchial chamber (NSMT-Cr 29260: CB 32.7 mm, CL 28.0 mm).

Remarks. Both of the specimens examined are infected by epicaridean parasites; in the smaller male (NSMT-Cr 29259: Fig. 5B View Fig ), the branchial chambers of both sides are heavily deformed, and in another, slightly larger male (NSMT-Cr 29160), the right branchial chamber is also strongly bulged.

Takeda et al. (2021) recorded two species of Cyrtomaia , C. horrida Rathbun, 1916 from the Sulu Sea and C. largoi Richer de Forges and Ng, 2007 from the Sibutu Passage, with some taxonomic comments. This species is distinctly different from them in having long protogastric spines. Richer de Forges and Guinot (1988) discussed the differences between the new species, C. coriolisi , and C. suhmii Miers, 1886 , and indicated that there is only a vestigial intercalated granule instead of spinule on the supraorbital border in C. coriolisi . The morphological features other than the deformity of the branchial chambers essentially agree with the descriptions and illustrations by Griffin and Tranter (1986a), Guinot and Richer de Forges (1985), Richer de Forges and Guinot (1990), Promdam (2011), and Padate et al. (2021).

Distribution. Indo-West Pacific, from Japan to Australia and India through the Philippines and Indonesia, 488–1125 m depth. Davie (2002) recorded this species in the Zoological Catalogue of Australia based on the records by Griffin and Brown (1976), Griffin and Tranter (1986a), and Davie and Short (1989).

References

Davie, P. J. F. and J. W. Short 1989. Deepwater Brachyura (Crustacea: Decapoda) from southern Queensland, Australia with descriptions of four new species. Mem- oirs of the Queensland Museum 27: 157 - 187.

Davie, P. J. F. 2002. Crustacea: Malacostraca: Eucarida (Part 2): Decapoda - Anomura, Brachyura. In Wells, A. and W. W. K. Houston (eds): Zoological Catalogue of Australia 19.3 B: xiv + 641 pp.

Griffin, D. J. G. and D. E. Brown 1976. Deepwater deca- pod Crustacea from eastern Australia: Brachyuran crabs. Records of the Australian Museum 30: 248 - 271.

Griffin, D. J. G. and H. A. Tranter 1986 a. The Decapoda Brachyura of the Siboga Expedition. Part VIII. Maji- dae. Siboga-Expeditie, Monographie 39 C 4: 1 - 335.

Guinot, D. and B. Richer de Forges 1985. Crustaces Decapodes: Majidae (genres Platymaia, Cyrtomaia, Pleistacantha, Sphenocarcinus et Naxioides). Resultats des campagnes MUSORSTOM. I & II. Philippines. Tome 2. Memoires du Museum national d`Histoire naturelle, Paris, (A) 133: 83 - 177.

Miers, E. J. 1886. Report on the Brachyura collected by H. M. S. Challenger during the years 1873 - 76. In: Report on the Scientific Results of the Voyage of H. M. S. Challenger during the years 1873 - 1876 under the command of Captain George S. Nares, R. N., F. R. S. and the late Captain Frank Tourle Thomson, R. N. prepared under the Superintendence of the late Sir C. Wyville Thomson, Knt., F. R. S. & c. Regius Professor of Natural History in the University of Edinburgh of the civilian scientific staff on board and now of John Mur- ray, one of the naturalists of the Expedition. Zoology, 17: i - L, 1 - 362, pls. 1 - 29.

Padate, V. P., S. S. Cubelio and M. Takeda 2021. Rare deep-water crabs (Crustacea: Decapoda) from Indian waters, with description of one new species. Nauplius, 29 (e 2021034): 21 pp.

Promdam, R. 2011. New records of spider crabs of the genera Cyrtomaia Miers, 1886, and Platymaia Miers, 1886 (Decapoda: Majoidea: Inachidae) from the Anda- man Sea, Thailand. Phuket Marine Biological Center Research Bulletin 70: 7 - 14.

Rathbun, M. J. 1916. New species of crabs of the families Inachidae and Parthenopidae. Proceedings of the United States National Museum 50: 527 - 559.

Richer de Forges, B. and D. Guinot 1988. Description de trois especes de Cyrtomaia Miers, 1886, de Nouvelle- Caledonie et des iles Chesterfield (Crustacea Decapoda Brachyura). Bulletin du Museum national d`Histoire naturelle, Paris (4) (A) 10: 39 - 55.

Richer de Forges, B. and P. K. L. Ng 2007. Notes on deep-sea spider crabs of the genus Cyrtomaia Miers, 1886, from the Philippines (Crustacea: Decapoda: Brachyura: Majidae), with description of a new spe- cies. The Raffles Bulletin of Zoology, Supplement 16: 55 - 65.

Takeda, M., N. Ohtsuchi and H. Komatsu 2021. Crabs (Crustacea, Decapoda, Brachyura) from the sea off East and Southeast Asia collected by the RV Hakuho Maru (KH- 72 - 1 cruise). 1. Sulu Sea and Sibutu Passage. Bul- letin of the National Museum of Nature and Science, Tokyo, (A) 47: 65 - 97.

Figures

Fig. 5. A: Pleistacantha griffini Ahyong and Lee, male (NSMT-Cr 29258: CB 6.7mm×CL 10.2mm excluding pseudorostral spines) from sta. 28 (Timor Sea, 295–296m depth). B: Cyrtomaia suhmi Miers, male infected by epicaridean parasites in both branchial chambers (NSMT-Cr 29259: CB 31.6mm excluding branchial spines×CL 26.2mm excluding pseudorostral spines) from sta. 26 (Timor Sea, 610–690m depth). C–D: Dorhynchus rostratus (Sakai), female (NSMT-Cr 29261: CB 15.2mm×CL 15.0mm excluding pseudorostral spines) from sta. 26 (Timor Sea, 610–690m depth). E: Platymaia fimbriata Rathbun, male (NSMT-Cr 29263: CB 14.0mm×CL 12.6mm excluding pseudorostral spines) from sta. 26 (Timor Sea, 610–690m depth). F: Platymaia wyvillethomsoni Miers, ovigerous female (NSMT-Cr 29264: CB 39.5mm excluding branchial spines×CL 36.7mm excluding pseudorostral spines) from sta. 28 (Timor Sea, 295–296m depth).