Rhinolambrus turriger (White, 1847)

Shaga, I Bevin, Priya, K, Ramar, Selvakumar, Srinidhi, S, Mohan, G Chandra, Ranganathan, Sukanya, Moulvi, S M M & Mani, Bhuvaneswari, 2023, A Small Collection of Subtidal Crabs (Crustacea: Decapoda: Brachyura) from the Palau Islands Collected by Dredging, Bulletin of the National Museum of Nature and Science. Series A, Zoology 49 (1), pp. 7-42 : 14

publication ID	https://doi.org/10.50826/bnmnszool.49.1_7
DOI	https://doi.org/10.5281/zenodo.13826490
persistent identifier	https://treatment.plazi.org/id/1B153E3A-FF82-FFBC-F3E7-CB9F596DFC78
treatment provided by	Felipe (2024-06-17 17:09:32, last updated 2024-11-25 18:32:22)
scientific name	Rhinolambrus turriger (White, 1847)
status

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Rhinolambrus turriger (White, 1847) View in CoL

( Fig. 3A–C View Fig )

Material examined. Inside of Gesodokkuru Reef , off Arumonogui, Babelthuap I., Palau Is., dredged, ca. 20 m in depth; 1♂ (cb 11.4×cl 11.3 mm including front and excluding posterior tubercles), NSMT-Cr 30964; July 13, 1980; K. Baba leg. ─ Entrance of Toagel Mid in Arangel Channel, Babelthuap I., Palau Is., dredged, 40 m in depth, mud; 1 ♂ (11.7× 11. 8 mm), NSMT-Cr 30965; June 22, 1980; K. Baba leg.

Remarks. As seen in Fig. 3A–C View Fig , the chelipeds are remarkably long and slender, and there are two intestinal spines differing from only one spine in most of the congeners. These two characters are finely figured by Adams and White (1848: pl. 5 fig. 2), and shared only with Rhinolambrus sisimanensis which was originally described by Sèrene and Umali (1972) and later recorded by Davie and Turner (1994) as Parthenope (Rhinolambrus) . These two species are generally close to each other, but readily distinguished by having one spine each at the gastric and branchial regions in R. turriger instead of two spines in R. sisimanensis .

Borradaile (1903b) made a simple but fine drawing to show adequately the specific characters. Flipse (1930) examined several specimens from Indonesian waters and deeply noted on the armatures of the carapace and chelipeds. In the paper dealing with Lambrachaeus ramifer Alcock, 1905 , Ng and McLay (2003) showed the basic similarity between R. turriger and L. ramifer as the parthenopid crabs in having the long chelipeds and slender ambulatory legs of the parthenopid type, and decidedly transferred L. ramifer to the family Parthenopidae from the family Majidae s.l.

Distribution. West Pacific from the Philippines to the Sunda Strait in the Java Sea, Darnley Island in the Torres Strait, and the Andaman Islands and Seychelles in the Indian Ocean ( Miers, 1884; Flipse, 1930). The recorded bathymetric range is from 25 to 90 m. New to the Palau Islands.

References

Adams, A. and A. White 1848 - 1849. Crustacea. In Adams A. (ed.): The Zoology of the Voyage of the H. M. S. Samarang; under the Command of Captain Sir Edward Belcher, C. B., F. R. A. S., F. G. S. during the Years 1843 - 1846, by John Edwards Gray, F. R. S.; Sir John Richardson, M. D., F. R. S.; Arthur Adams, F. L. S.; Lovell Reeve, F. L. S.; and Adam White, F. L. S. Reeve and Benham, London, viii + 66 pp., 13 pls. [pp. 1 - 32 and pls. 1 - 6 were published in 1848; pp. i - viii, 33 - 66 and pls. 7 - 13 in 1849].

Borradaile, L. A. 1903 b. Marine crustaceans. X. The spi- der-crabs (Oxyrhyncha). XI. On the classification and genealogy of the reptant decapods. In Gardiner, S. (ed.): The Fauna and Geography of the Maldive and Laccadive Archipelagoes. Being Account of the Work carried on and of the Collections made by an Expedition during the Years 1899 and 1900 2: 681 - 698, pl. 47.

Davie, P. J. F. and P. A. Turner 1994. A new record and new species of Parthenope from northern Australia (Crustacea: Brachyura: Parthenopidae). Raffles Bulletin of Zoology 42: 975 - 981.

Flipse, H. J. 1930. Die Decapoda Brachyura der Siboga- Expedition. VI. Oxyrhyncha: Parthenopidae. Siboga-Expeditie, Monographie 39 c 2: 1 - 96.

Miers, E. J. 1884. Crustacea. In: Report on the Zoological Collections made in the Indo-Pacific Ocean during the Voyage of H. M. S. bAlert` 1881 - 2. Part I. The collections from Melanesia, pp. 178 - 322, pls. 18 - 35. Part II. Collections from the western Indian Ocean, pp. 513 - 575, pls. 46 - 52.

Ng, P. K. L. and C. L. McLay 2003. On the systematic position of Lambrachaeus Alcock, 1895 (Brachyura, Parthenopidae). Crustaceana 76: 897 - 915.

Serene, R. and A. F. Umali 1972. The family Raninidae and other new and rare species of brachyuran decapods from the Philippines and adjacent regions. The Philippine Journal of Science 99: 21 - 105, pls. 1 - 9.

Figures

Fig. 3. A–C: Rhinolambrus turriger (White), ♂ (NSMT-Cr 30964; cb 11.4×cl 11.3mm including front and excluding posterior tubercles). Overall appearance, with original label (A) and carapace in doral (B) and frontal (C) views. D–E: Lambrachaeus ramifer Alcock, ♂(NSMT-Cr 30963; cb 4.8×pcl 8.0mm). Dorsal view, with detached chelipeds and ambulatory legs (D) and carapace in lateral view (E).