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Issue: Vol. 5471 No. 2: 18 Jun. 2024
Type: Article
Published: 2024-06-18
DOI: 10.11646/zootaxa.5471.2.6
Page range: 261-267
Abstract views: 54
PDF downloaded: 27

A new species of Cymonomus A. Milne-Edwards, 1880, from the deep waters of the Gulf of Mexico (Crustacea: Brachyura: Cymonomidae)

Department of Biology; University of Louisiana; Lafayette; Louisiana 70504-2451; U.S.A; Department of Invertebrate Zoology; National Museum of Natural History; Smithsonian Institution; Washington; DC 20560; U.S.A
Museu de Zoologia; Universidade de São Paulo; Ipiranga 04263-000; São Paulo; SP; Brazil
Crustacea Cymonomus Cymonomidae new species continental slope Gulf of Mexico

Abstract

A new western Atlantic member of the cymonomid crab genus, Cymonomus A. Milne-Edwards, 1880, is described from the continental slope in the northern Gulf of Mexico. While the only two available specimens are poorly preserved and lack appendages, they are clearly distinct from other known members of the genus on the basis of the subangular anterolateral margin of the carapace paired with nearly straight, untapered eyestalks that terminate in a slightly bulbous, well-defined cornea, and antennal peduncles that reach beyond the second article of the antennular peduncle. Despite extensive collecting efforts in adjacent waters, the specimens remain known from only the type locality at 850 m depth.

 

References

  1. Ahyong, S.T. (2008) Deepwater crabs from seamounts and chemosynthetic habitats off eastern New Zealand (Crustacea: Decapoda: Brachyura). Zootaxa, 1708 (1), 1–72. https://doi.org/10.11646/zootaxa.1708.1.1
  2. Ahyong, S.T. (2014) Cymonomid crabs of the MAINBAZA Expedition (Decapoda: Brachyura). Zootaxa, 3821 (3), 384–390. https://doi.org/10.11646/zootaxa.3821.3.7
  3. Ahyong, S.T. (2019) The cymonomid crabs of New Zealand and Australia (Crustacea: Brachyura: Cyclodorripoida). Records of the Australian Museum, 71 (2), 33–69. https://doi.org/10.3853/j.2201-4349.71.2019.1682
  4. Ahyong, S.T. & Brown, D.E. (2003) New species of Cymonomus from southeastern Australia (Brachyura, Cymonomidae) with a key to the Indo-West Pacific species. Crustaceana, 75, 1363–1374. https://doi.org/10.1163/156854002321629790
  5. Ahyong, S.T., Mitra, S. & Ng, P.K.L. (2020). Cymonomid crabs from southwestern Indonesia and redescription of Cymonomus andamanicus Alcock, 1905. Raffles Bulletin of Zoology, 68, 62–69.
  6. Ahyong, S.T. & Ng, P.K.L. (2009) The Cymonomidae of the Philippines (Crustacea: Decapoda: Brachyura), with descriptions of four new species. Raffles Bulletin of Zoology, Supplement 20, 233–246.
  7. Ahyong, S.T. & Ng, P.K.L. (2011) Cyclodorippoid crabs from the Philippines collected by the PANGLAO 2004–2005 and AURORA 2007 expeditions. Zoologischer Anzeiger, 250, 479–487. https://doi.org/10.1016/j.jcz.2011.06.001
  8. Ahyong, S.T. & Ng, P.K.L. (2017) East Asian cymonomid crabs (Crustacea: Brachyura). Zoological Studies, 56 (24), 1–20. https://doi.org/10.6620/ZS.2017.56-24
  9. Ahyong, S.T. & Ng, P.K.L. (2023) Cymonomus dwi, a new species of deep-water cymonomid crab from Indonesia (Crustacea: Brachyura). Raffles Bulletin of Zoology, 71, 116–119. https://doi.org/10.26107/RBZ-2023-0010
  10. Campos, O. Jr. (1997) Três novas espécies brasileiras do gênero Cymonomus A. Milne-Edwards, 1880 (Crustacea, Brachyura, Podotremata). Trabalhos do Instituto Oceanográfico da Universidade Federal de Pernambuco, Recife, 25, 127–135. https://doi.org/10.5914/tropocean.v25i1.2734
  11. Chace, F.A. Jr. (1940) Reports on the scientific results of the Atlantis expeditions to the West Indies, under the joint auspices of the University of Havana and Harvard University. The brachyuran crabs. Torreia, Havana, 4, 1–67.
  12. Felder, D.L., Álvarez, F., Goy, J.W. & Lemaitre, R. (2009) Chapter 59: Decapoda (Crustacea) of the Gulf of Mexico, with comments on the Amphionidaceain. In: Felder, D.L. & Camp, D.K. (Eds.), Gulf of Mexico Origin, Waters, and Biota. Vol. 1. Biodiversity. Texas A&M University Press, College Station, Texas, pp. 1019–1104.
  13. Lemaitre, R. & Bermúdez, A. (2000) A new cyclodorippoid crab of the genus Cymonomoides Tavares, 1993 (Crustacea: Decapoda: Brachyura: Cymonomidae) from the Caribbean coast of Colombia. Proceedings of the Biological Society of Washington, 113 (4), 974–979.
  14. Milne-Edwards, A. (1880) Études préliminaires sur les crustacés. In: Reports on the Results of Dredging, under the Supervision of Alexander Agassiz, in the Gulf of Mexico, and in the Caribbean Sea, 1877, ‘78, ‘79, by the United States Coast Survey Steamer “Blake,” Lieut.-Commander C.D. Sigsbee, U.S.N., and Commander J.R. Bartlett, U.S.N., Commanding, VIII. Bulletin of the Museum of Comparative Zoology, Harvard, 8 (1), 1–68.
  15. Milne-Edwards, A. & Bouvier, E.-L. (1902) Reports on the results of dredging, under the supervision of Alexander Agassiz, in the Gulf of Mexico (1877–78), in the Caribbean Sea (1878-79), and along the Atlantic Coast of the United States (1880), by the U.S. Coast Survey Steamer “Blake”. XXXIX. Les Dromiacés et Oxystomes. Memoirs of the Museum of Comparative Zoölogy at Harvard College, 27 (1), 1–127.
  16. Müller, P. & Collins, J.S.H. (1991) Late Eocene coral-associated decapods (Crustacea) from Hungary. Contributions to Tertiary and Quaternary Geology, 28 (2–3), 47–92.
  17. Takeda, M., Ohtsuchi, N. & Komatsu, H. (2021) Crabs (Crustacea, Decapoda) from the Sea off East and Southeast Asia collected by the RV Hakuhô Maru (KH-72-1 Cruise) 1. Sulu Sea and Sibutu Passage. Bulletin of the National Museum of Nature and Science, Series A (Zoology), 47, 65–97.
  18. Tavares, M. (1991) Espèces nouvelles de Cyclodorippoidea Ortmann et remarques sur les genres Tymolus Stimpson et Cyclodorippe A. Milne Edwards (Crustacea, Decapoda, Brachyura). Bulletin du Muséum national d’Histoire naturelle, Paris, 4A, 12 (3–4), 623–648. [dated 1990, published 1991] https://doi.org/10.5962/p.289575
  19. Tavares, M. (1993a) Description préliminaire de quatre nouveaux genres et trois nouvelles espèces de Cyclodorippoidea Américains (Crustacea, Decapoda Brachyura). Vie et Milieu, 43, 137–144.
  20. Tavares, M. (1993b) Crustacea Decapoda: les Cyclodorippidae et Cymonomidae de l’Indo-ouest-Pacifique à l’exclusion du genre Cymonomus. In: Crosnier, A. (Ed.), Résultats des Campagnes MUSORSTOM, 10. Mémoires du Muséum national d’Histoire naturelle, Paris, Series A, Zoologie, 156, pp. 253–313.
  21. Tavares, M. (1994) Description de Cymonomus leblondi sp. nov. de Guadeloupe, avec une clef des Cymonomus américains (Decapoda, Brachyura, Cymonomidae). Bulletin du Muséum national d’Histoire naturelle, Paris, Série 4, 16, 203–208.
  22. Wyville Thompson, C. (1873) The depths of the sea. An account of the general results of the dredging cruises of the H.M.SS. ‘Porcupine’ and ‘Lightning’ during the Summers of 1868, 1869, and 1870, under the scientific direction of Dr. Carpenter, F.R.S., J. Gwyn Jeffreys, F.R.S. and Dr. Wyville Thomson, F.R.S. Macmillan and Co., London, xxi + 527 pp., VIII pls. https://doi.org/10.5962/bhl.title.16330