Published January 30, 2026
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A new isopod species of the genus Edotia (Valvifera, Idoteidae) from Argentina, with a key to South American species
Authors/Creators
- 1. Universidad de Buenos Aires, Buenos Aires, Argentina
- 2. Universidad de Buenos Aires, Buenos Aires, Argentina|Universidad de Buenos Aires - CONICET, Buenos Aires, Argentina
Description
A new valviferan isopod—Edotia dotiae sp. nov.— is described from the shallow coastal waters of Argentine Patagonia. The specimens were collected during three different expeditions in the Chubut and Santa Cruz provinces and in the Beagle Channel. The new species is distinguished from other Edotia species by the presence of two dorsal lobes on the head, a distally protruding pleotelson and uropods with elongated endopods reaching the tip of the pleotelson. In addition, it displays discrete patches of fluted tubercles on its dorsal and lateral body surface. These structures are described in detail based on SEM images. An identification key for Edotia species from South America is presented.
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References
- Bate CS (1863) On some new Australian species of Crustacea. Proceedings of the Zoological Society of London 1863: 498–505.
- Boyko CB, Bruce NL, Hadfield KA, Merrin KL, Ota Y, Poore GCB [Eds] (2025) World Marine, Freshwater and Terrestrial Isopod Crustaceans database. Edotia Guérin-Méneville, 1843. https://www.marinespecies.org/aphia.php?p=taxdetails&id=157882 [accessed on 21 March 2025]
- Brandt A (1990) Antarctic Valviferans (Crustacea, Isopoda, Valvifera). New Genera, New Species and Redescriptions. E.J. Brill, Leiden, 176 pp. https://doi.org/10.1163/9789004612198
- Brandt A, Bruce NL (2006) Edotia tangaroa sp. nov. (Crustacea: Isopoda: Idoteidae) from the western Ross Sea, Antarctica. Zootaxa 1313(1): 57–68. https://doi.org/10.11646/zootaxa.1313.1.3
- Brusca RC, Wallerstein BR (1979) The marine isopod crustaceans of the Gulf of California II. Idoteidae: New genus and species, range extensions and comments on evolution and taxonomy within the family. Proceedings of the Biological Society of Washington 92: 253–271.
- Castelló J (2004) Isopods (Crustacea, Isopoda) from the Spanish "Bentart-94/95 expeditions to the South Shetland Islands (sub-Antarctic). Polar Biology 28: 1–14. https://doi.org/10.1007/s00300-004-0646-9
- Coleman CO (2003) "Digital inking": How to make the perfect line drawings on computers. Organisms, Diversity & Evolution 3(4): 1–14. https://doi.org/10.1078/1439-6092-00081
- Cunningham RO (1871) Notes on the Reptiles, Amphibia, Fishes, Mollusca, and Crustacea obtained during the voyage of H.M.S. 'Nassau' in the years 1866–1869. Transactions of the Linnean Society of London 27(4): 465–502. https://doi.org/10.1111/j.1096-3642.1871.tb00219.x
- Giambiagi D (1925) Resultados de la primera expedición a Tierra del Fuego (1921). Crustáceos Isópodos. Anales de la Sociedad Científica Argentina 1925: 1–20.
- Goeke GD, Heard RW (1983) Taxonomy and distribution of Edotea (= Tropedotea) lyonsi (Menzies and Kruczynski, 1983) n. comb. (Crustacea: Isopoda: Idoteidae). Gulf Research Reports 7: 275–277. https://doi.org/10.18785/grr.0703.11
- Guérin-Méneville FE (1843) Crustacés. In: Cuvier G (Ed.) Iconographie du Regne Animal de G Cuvier, ou Representation D'apres Nature de l'une des Espèces les Plus Remarquable et Souvent non Encore Figurées de Chaque Genre D'animaux. Paris, France, 48 pp.
- Hale HM (1927) The Crustaceans of South Australia. Part 1. British Science Guild (South Australian Branch), Adelaide, 201 pp.
- Hessler RR (1970) The Desmosomatidae (Isopoda, Asellota) of the Gay Head-Bermuda Transect. Bulletin of the Scripps Institution of Oceanography 15: 1–185.
- Kussakin OG (1982) Morskye I solonovatovodnye ravnonogie rakoobrasnye (Isopoda) cholodnix I umerennix vod severnogo polushariya. Podotryadi Anthuridea, Microcerberidea, Valvifera, Tyloidea. Vol. II, Nauka, Leningrad, 463 pp. [in Russian]
- Martín D, Arroyo G, Rodríguez A, Isenberg T (2017) A survey of digital stippling. Computers & Graphics 67: 24–44. https://doi.org/10.1016/j.cag.2017.05.001
- Menzies RJ (1962) The zoogeography, ecology, and systematics of the Chilean marine isopods. Lunds Universitets Årrskrifter NF. Avd 2(57): 1–162.
- Menzies RJ, Barnard JL (1959) Marine Isopoda of coastal shelf bottoms of Southern California -systematics and ecology. Pacific Science Naturalist 1: 3–35.
- Menzies RJ, Kruczynski WL (1983) Isopod Crustacea (exclusive of Epicaridea). Memoirs of the Hourglass Cruises 6: 1–126.
- Müller H-G (1988) Idoteidae aus N-Kolumbien mit Bestchreibung von Edotia samariensis n. sp. (Crustacea: Isopoda: Valvifera). Senckenbergiana Biologica 68: 407–412.
- Nicolet H (1849) Crustaceós. In: Gay C (Ed.) História fisica y politica de Chile segun documentos adquiridos en esta República durante doce años de residencia en ella y publicada bajo los auspícios del supremo gobierno (Vol. Zoologia, 3). Paris, 115–318.
- Nordenstam Å (1933) Marine Isopoda of the families Serolidae, Idotheidae, Pseudidotheidae, Arcturidae, Parasellidae and Stenetriidae mainly from the South Atlantic. Further Zoological Results of the Swedish Antarctic Expedition 1901–1903(3): 1–284.
- Ohlin A (1901) Isopoda from Tierra del Fuego and Patagonia. I. Valvifera. Wissenschaftliche Ergebnisse der Schwedischen Expedition in die Magellanregion oder nach den Magellansländern 1895–1897 2: 261–306.
- Patterson T, Vaughn Kelso N (2025) Natural Earth. Free vector and raster map data. https://www.naturalearthdata.com/
- Pereira E (2017) Revisión de la familia Idoteidae (Crustacea: Isopoda: Valvifera) de la Plataforma Continental Argentina y el Talud adyacente. Tesis de Licenciatura, Universidad de Buenos Aires, Buenos Aires, Argentina.
- Pereira E, Doti B (2017) Edotia abyssalis n. sp. from the Southwest Atlantic Ocean, first record of the genus (Isopoda, Valvifera, Idoteidae) in the deep sea. Zoologischer Anzeiger 268: 19–31. https://doi.org/10.1016/j.jcz.2017.04.007
- Pereira E, Roccatagliata D, Doti BL (2019) Xiphoarcturus—a new genus and two new species of the family Antarcturidae (Isopoda: Valvifera) from the Mar del Plata submarine canyon and its phylogenetic relationships. Arthropod Systematics & Phylogeny 77: 303–323. https://doi.org/10.26049/ASP77-2-2019-07
- Pereira E, Roccatagliata D, Corriale MJ, Doti BL (2025) Into the deep: diversity of valviferan isopods (Crustacea: Peracarida) from the Mar del Plata submarine canyon and adjacent area, Argentina. Deep-sea Research. Part I, Oceanographic Research Papers 222: e104515. https://doi.org/10.1016/j.dsr.2025.104515
- Poore GCB, Lew Ton HM (1993) Idoteidae of Australia and New Zealand (Crustacea: Isopoda: Valvifera). Invertebrate Taxonomy 7(2): 197–278. https://doi.org/10.1071/IT9930197
- QGIS Development Team (2025) QGIS Geographic Information System. Open Source Geospatial Foundation Project. http://qgis.osgeo.org
- Rafi F, Laubitz DR (1990) The Idoteidae (Crustacea: Isopoda: Valvifera) of the shallow waters of the northeastern North Pacific Ocean. Canadian Journal of Zoology 68(12): 2649–2687. https://doi.org/10.1139/z90-370
- Richardson H (1900) Synopsis of North-American Invertebrates. VIII. The Isopoda. Part I. Chelifera, Flabellifera, Valvifera. The American Naturalist 34(399): 207–230. https://doi.org/10.1086/277593
- Richardson H (1905) A Monograph on the isopods of North America. Bulletin – United States National Museum 54(54): 1–717. https://doi.org/10.5479/si.03629236.54.i
- Samouelle G (1819) The Entomologists' Useful Compendium; or an Introduction to the Knowledge of British Insects, Comprising the Best Means of Obtaining and Preserving the, and a Description of the Apparatus Generally Used; Together with the Genera of Linné, and Modern Methods of Arranging the Classes Crustacea, Myriapoda, Spiders, Mites and Insects, from their Affinities and Structure, According to the Views of Dr. Leach. Also an Explanation of the Terms Used in Entomology; a Calendar of the Times of Appearance and Usual Situations of Near 3,000 Species of British Insects; With Instructions for Collecting and Fitting up Objects for the Microscope. Thomas Boys, London, 496 pp. https://doi.org/10.5962/bhl.title.120094
- Say T (1818) An account of the Crustacea of the United States. Journal of the Academy of Natural Sciences of Philadelphia 1: 393–401. [423–433.]
- Schotte M, Markham JC, Wilson GDF (2009) Isopoda (Crustacea) of the Gulf of Mexico. In: Felder DL, Camp DK (Eds) Gulf of Mexico – Its Origins, Waters, and Biota: Biodiversity. Texas A&M University Press, College Station, Texas, 973–986.
- Schultz GA (1969) How to Know the Marine Isopod Crustaceans. Wm. C. Brown Company, New York, 359 pp.
- Sheppard EM (1957) Isopod Crustacea Part II. The suborder Valvifera. Families: Idoteidae, Pseudidotheidae and Xenarcturidae fam. n. With a supplement to Isopod Crustacea, Part 1. The family Serolidae. Discovery Reports 29: 141–197. https://doi.org/10.5962/bhl.part.12485
- Stebbins TD, Wetzer R (2023) Review and guide to the isopods (Crustacea, Isopoda) of littoral and sublittoral marine habitats in the Southern California Bight. ZooKeys 1162: 1–167. https://doi.org/10.3897/zookeys.1162.100390
- Stimpson W (1853) Synopsis of the marine Invertebrata of Grand Manan, or the region about the mouth of the Bay of Fundy, New Brunswick. Smithsonian Contributions to Knowledge 6: 1–66. https://doi.org/10.5962/bhl.title.11697
- Wägele J-W (1991) Synopses of Antarctic Benthos (Vol. 2). Aquatic Isopoda Valvifera. Koeltz Scientific Books, Koenigstein, 213 pp.