New species of Rhachotropis (Amphipoda: Eusiroidea) from the Florida straits and Caribbean Sea
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Jul 23, 2025
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Abstract
A new species of deep-sea amphipod of the genus Rhachotropis is described. The material was collected in different sites of the Florida strait and the Caribbean Sea by the research vessels R/V Pillsbury and R/V Gerda in 1968 and 1969. The most relevant differences between the new species and the other species in the genus are also presented. A dichotomous key to identifying the species known up to now at the Tropical Atlantic, is also presented.
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Crustacea, Peracarida, new species, Atlantic Ocean
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Corbari, L.; Zuccon, D.; Sorbe, J. C. & Frutos, I. (2024). New bathyal amphipod species (Amphipoda: Eusiridae: Rhachotropis) from southwestern Pacific through integrative taxonomy. Organisms Diversity & Evolution, 24(1), 1–42 https://doi.org/10.1007/s13127-024-00651-0.
Barnard, J. L. (1964). Deep-sea Amphipoda (Crustacea) collected by R. V. “Vema” in the eastern Pacific Ocean and the Caribbean and Mediterranean Seas. Bulletin of the American Museum of Natural History, 127(1), 3‒46.
Barnard, J. L. & Karaman, G. (1991). The Families and Genera of Marine Gammaridean Amphipoda (Except Marine Gammaroids). Records of the Australian Museum, 13(1 & 2), 1–866.
Bousfield, E. L., & Hendrycks, E. (1995). The amphipod superfamily Eusiroidea in the North American Pacific Region. I. Family Eusiridae: Systematics and distributional ecology. Amphipacifica, 1(4), 3–59.
Horton, T.; Lowry, J.; De Broyer, C.; Bellan-Santini, D.; Copilas-Ciocianu, D.; Corbari, L.; Costello, M. J.; Daneliya, M.; Dauvin, J.-C.; Fišer, C.; Gasca, R.; Grabowski, M.; Guerra-García, J. M.; Hendrycks, E.; Hughes, L.; Jaume, D.; Jazdzewski, K.; Kim, Y. H.; King, R.; Krapp-Schickel, T.; LeCroy, S.; Lörz, A. N.; Mamos, T.; Senna, A. R.; Serejo, C.; Souza-Filho, J. F.; Tandberg, A. H.; Thomas, J. D.; Thurston, M.; Vader, W.; Väinölä, R.; Valls Domedel, G.; Vonk, R.; White, K.; Zeidler, W. (2024). World Amphipoda Database. Rhachotropis S.I. Smith, 1883. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=101528 on 2024-12-07.
Lörz, A. N. (2010). Deep-sea Rhachotropis (Crustacea: Amphipoda: Eusiridae) from New Zealand and the Ross Sea with key to the Pacific, Indian Ocean and Antarctic species. Zootaxa, 2482, 22–48. https://doi.org/10.11646/zootaxa.2482.1.2.
Lörz, A. N. (2015). An enigmatic Rhachotropis (Crustacea: Amphipoda: Eusiridae) from New Zealand. Zootaxa, 4006(2), 383–391. https://doi.org/10.11646/zootaxa.4006.2.9.
Lörz, A. N., Tandberg, A. H., Willassen, E. & Driskell, A. (2018). Rhachotropis (Eusiroidea, Amphipoda) from the North East Atlantic. Zookeys, 731, 75–101. https://doi.org/10.3897/zookeys.731.19814
Lowry, J. & Myers, A. (2017). A Phylogeny and Classification of the Amphipoda with the establishment of the new order Ingolfiellida (Crustacea: Peracarida). Zootaxa, 4265(1), 1–89. https://doi.org/10.11646/zootaxa.4265.1.1
Ortiz, M.; Lalana, R. & Varela, C. (2007). First record of the genus Rhachotropis (Crustacea: Amphipoda: Gammaridea: Eusiridae) for the Cuban marine waters, with the description of a new species. Travaux du Muséum National d’Histoire Naturelle “Grigore Antipa”, L, 25–30.
Ortiz, M., Winfield, I.; Scheinvar-Gottdiener, E. & Cházaro Olvera, S. (2014). Clave ilustrada de Anfípodos del Golfo de México y el Mar Caribe. FES Iztacala-UNAM (ISBN 978-607-5170-2), 234 pp.
Shoemaker, C. R. (1934). Three new amphipods. Reports on the collections obtained by the first Johnson-Smithsonian deep-sea expedition to the Puerto Rican Deep. Smithsonian Miscellaneous Collections, 91(12), 6 pp.
Stebbing, T. R. R. (1908). On two new species of northern Amphipoda. Journal of the Linnean Society of London, Zoology, 30, 191–197.
Barnard, J. L. (1964). Deep-sea Amphipoda (Crustacea) collected by R. V. “Vema” in the eastern Pacific Ocean and the Caribbean and Mediterranean Seas. Bulletin of the American Museum of Natural History, 127(1), 3‒46.
Barnard, J. L. & Karaman, G. (1991). The Families and Genera of Marine Gammaridean Amphipoda (Except Marine Gammaroids). Records of the Australian Museum, 13(1 & 2), 1–866.
Bousfield, E. L., & Hendrycks, E. (1995). The amphipod superfamily Eusiroidea in the North American Pacific Region. I. Family Eusiridae: Systematics and distributional ecology. Amphipacifica, 1(4), 3–59.
Horton, T.; Lowry, J.; De Broyer, C.; Bellan-Santini, D.; Copilas-Ciocianu, D.; Corbari, L.; Costello, M. J.; Daneliya, M.; Dauvin, J.-C.; Fišer, C.; Gasca, R.; Grabowski, M.; Guerra-García, J. M.; Hendrycks, E.; Hughes, L.; Jaume, D.; Jazdzewski, K.; Kim, Y. H.; King, R.; Krapp-Schickel, T.; LeCroy, S.; Lörz, A. N.; Mamos, T.; Senna, A. R.; Serejo, C.; Souza-Filho, J. F.; Tandberg, A. H.; Thomas, J. D.; Thurston, M.; Vader, W.; Väinölä, R.; Valls Domedel, G.; Vonk, R.; White, K.; Zeidler, W. (2024). World Amphipoda Database. Rhachotropis S.I. Smith, 1883. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=101528 on 2024-12-07.
Lörz, A. N. (2010). Deep-sea Rhachotropis (Crustacea: Amphipoda: Eusiridae) from New Zealand and the Ross Sea with key to the Pacific, Indian Ocean and Antarctic species. Zootaxa, 2482, 22–48. https://doi.org/10.11646/zootaxa.2482.1.2.
Lörz, A. N. (2015). An enigmatic Rhachotropis (Crustacea: Amphipoda: Eusiridae) from New Zealand. Zootaxa, 4006(2), 383–391. https://doi.org/10.11646/zootaxa.4006.2.9.
Lörz, A. N., Tandberg, A. H., Willassen, E. & Driskell, A. (2018). Rhachotropis (Eusiroidea, Amphipoda) from the North East Atlantic. Zookeys, 731, 75–101. https://doi.org/10.3897/zookeys.731.19814
Lowry, J. & Myers, A. (2017). A Phylogeny and Classification of the Amphipoda with the establishment of the new order Ingolfiellida (Crustacea: Peracarida). Zootaxa, 4265(1), 1–89. https://doi.org/10.11646/zootaxa.4265.1.1
Ortiz, M.; Lalana, R. & Varela, C. (2007). First record of the genus Rhachotropis (Crustacea: Amphipoda: Gammaridea: Eusiridae) for the Cuban marine waters, with the description of a new species. Travaux du Muséum National d’Histoire Naturelle “Grigore Antipa”, L, 25–30.
Ortiz, M., Winfield, I.; Scheinvar-Gottdiener, E. & Cházaro Olvera, S. (2014). Clave ilustrada de Anfípodos del Golfo de México y el Mar Caribe. FES Iztacala-UNAM (ISBN 978-607-5170-2), 234 pp.
Shoemaker, C. R. (1934). Three new amphipods. Reports on the collections obtained by the first Johnson-Smithsonian deep-sea expedition to the Puerto Rican Deep. Smithsonian Miscellaneous Collections, 91(12), 6 pp.
Stebbing, T. R. R. (1908). On two new species of northern Amphipoda. Journal of the Linnean Society of London, Zoology, 30, 191–197.
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How to Cite
Varela, C., & Ortiz, M. (2025). New species of Rhachotropis (Amphipoda: Eusiroidea) from the Florida straits and Caribbean Sea. Novitates Caribaea, (26), 11–19. https://doi.org/10.33800/nc.vi26.375
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