Thalamita sima H. Milne Edwards, 1834

Manikandan, K, Megalaa, N, Valliappan, Subramanian, Nandini, K, Rani, Lourdu V, Dakshinamurthi, Senthil & Nagappan, Nagappan, 2022, Crabs (Crustacea, Decapoda) from the Seas of East and Southeast Asia Collected by the RV Hakuhō Maru (KH- 72 - 1 Cruise) 3. Sahul Shelf, Bulletin of the National Museum of Nature and Science. Series A, Zoology 48 (2), pp. 35-83 : 65-66

publication ID	https://doi.org/10.50826/bnmnszool.48.2_35
DOI	https://doi.org/10.5281/zenodo.13824413
persistent identifier	https://treatment.plazi.org/id/4B248785-4224-A52D-3AB2-A77C2975FBE1
treatment provided by	Felipe (2024-06-17 16:57:54, last updated 2024-11-29 10:05:28)
scientific name	Thalamita sima H. Milne Edwards, 1834
status

Treatment

Thalamita sima H. Milne Edwards, 1834 View in CoL

( Fig. 14D–F View Fig )

Material examined. RV Hakuhō Maru KH-72-1 cruise, sta. 30, 1 Ə( CB 20.2 mm including lateral teeth×CL 14.0 mm), NSMT-Cr 30738.

Remarks. Thalamita sima is best characterized by the two-lobed front (this report: fig. 14E; Shen, 1934: fig. 17; Sakai, 1939: pl. 51 fig. 3; Barnard, 1950: fig. 33b; Stephenson and Hudson, 1957: pl. 5 fig. 2; Sakai, 1965: pl. 64 fig. 1; Sakai, 1976: pl. 130 fig. 3; Wee and Ng, 1995: fig. 59A), the pilose carapace surface (this report: fig. 14D, F) and the squamiform sculpture of the palm lower surface (this report: fig. 14E; Montgomery, 1931: pl. 29 fig. 2; Shen, 1934: fig. 18a). Of the five anterolateral teeth of the carapace, the fourth is slightly smaller than the others as seen in Fig. 14D View Fig of this report. The basal antennal article is armed with a low, smooth, curved crest finely granulated along the margin. Stephensen (1945: fig. 27E), Stephenson and Hudson (1957: fig. 3C), Crosnier (1962: fig. 181), Dai and Yang (1981: fig. 138-1), Wee and Ng (1995: fig. 59D– F) and Apel and Spiridonov (1998: fig. 94) gave fine figures of the G1 with the flared tip, which is close to those of such species as Th. sexlobata Miers, 1886 and Th. picta Stimpson, 1858 , in having the four-lobed front.

Distribution. Widely distributed in the Indo-West Pacific, from Hawaii and Japan to southwards to New Caledonia and Australia, and westwards to South Africa and the Red Sea. In Japan, this species is not uncommon on rocky shores down to 15 m depth, but otherwise there are some records from deeper waters down to 50 m. The bathymetric range is extended down to 115 m in this report.

References

Apel, M. and V. A. Spiridonov 1998. Taxonomy and zoo- geography of the portunid crabs (Crustacea: Decapoda: Brachyura: Portunidae) of the Arabian Gulf and adjacent waters. Fauna of Arabia 17: 159 - 331.

Barnard, K. H. 1950. Descriptive catalogue of South African decapod Crustacea. Annals of the South African Museum 38: 1 - 864.

Crosnier, A. 1962. Crustaces Decapodes Portunidae. Faune de Madagascar 16: 1 - 153, pls. 1 - 13.

Dai, A. and S. Yang 1981. Crabs of the China Seas. China Ocean Press, Beijing, 21 + 608 pp.

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, N. R., 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 Murray, one of the naturalists of the Expedition. Zool- ogy. Published by Order of Her Majesty`s Government 17: i-L, 1 - 362, pls. 1 - 29.

Milne Edwards, H. 1834. Histoire Naturelle s Crustaces, comperenant l`Anatomie, la Physiologie et la Classifi- cation de ces Animaux. I. Librairie Encylopedique de Roret, Paris, xxxv + 468 pp.

Sakai, T. 1939. Studies on the Crabs of Japan. IV. Brachygnatha, Brachyrhyncha. Yokendo Co., Tokyo, pp. 365 - 741, pls. 42 - 111.

Sakai, T 1965. The Crabs of Sagami Bay collected by His Majesty The Emperor of Japan. Maruzen Co., Ltd. Tokyo, xvi + 206 + 92 + 32 pp., 1 map, 100 pls.

Sakai, T. 1976. Crabs of Japan and the Adjacent Seas. Kodansha Ltd., Tokyo, xxix + 773 pp. (English Volume), 461 pp. (Japanese Volume), 16 pp. + 251 pls. (Plates).

Shen, C. - J. 1934. The crabs of Hong Kong. Part IV. The Hong Kong Naturalist, Supplement 3: 37 - 56.

Stephensen, K. 1945. The Brachyura of the Iranian Gulf with an appendix: The male pleopoda of the Brachyura. Danish Scientific Investigations in Iran 4: 57 - 237.

Wee, D. P. C. and P. K. L. Ng 1995. Swimming crabs of the genera Charybdis De Haan, 1833, and Thalamita Latreille, 1829 (Crustacea: Decapoda: Brachyura: Portunidae) from Peninsular Malaysia and Singapore. The Raffles Bulletin of Zoology, Supplement 1: 1 - 128.

Figures

Fig. 14.ɹA–C: Thalamita intermedia Miers, Ə (NSMT-Cr 30737; CB 12.7×CL 8.6mm) from sta. 29. Dorsal view (A), right anterolateral teeth (B), and front-orbital margin (C). D–F: Thalamita sima H. Milne Edwards, Ə (NSMT-Cr 30738; CB 20.2×CL 14.0mm)from sta. 30. Dorsal view (D), frontal margin (E), and both chelae (F).