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Illustrations were made using a drawing tube attached to a Leica DM750 microscope and vectorized using Inkscape 1.4 software.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      <jats:italic>Gussevia lamarckii<\/jats:italic>\n                      n. sp. is characterized by having an accessory piece nonarticulated with the MCO base, comprising two dorsal subunits, one Y-shaped and the other one rod-shaped; and an elongated peduncle. Furthermore, the new species can be easily distinguished from the other congeners by possessing (1) a ventral anchor with an external protuberance at the junction between the root and the shaft, and (2) a superficial groove at the base of the dorsal anchor.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>\n                      This study presents a new species of the genus\n                      <jats:italic>Gussevia<\/jats:italic>\n                      , the fourth described from\n                      <jats:italic>Astronotus<\/jats:italic>\n                      fish and the first from\n                      <jats:italic>A. ocellatus<\/jats:italic>\n                      and the aquatic ecosystems of the Caatinga domain.\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s11686-025-01210-z","type":"journal-article","created":{"date-parts":[[2026,1,26]],"date-time":"2026-01-26T11:32:34Z","timestamp":1769427154000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["A New Species of Gussevia (Monopisthocotyla: Dactylogyridae) Parasitizing the Gills of Astronotus Ocellatus (Cichliformes: Cichlidae) in the Caatinga Domain, Northeastern Brazil"],"prefix":"10.1007","volume":"71","author":[{"ORCID":"https:\/\/orcid.org\/0009-0005-4296-5315","authenticated-orcid":false,"given":"Ana Josilene Teles","family":"da Silva","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0072-3922","authenticated-orcid":false,"given":"Priscilla de Oliveira Fadel","family":"Yamada","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3317-8799","authenticated-orcid":false,"given":"Fabio Hideki","family":"Yamada","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2026,1,26]]},"reference":[{"key":"1210_CR1","unstructured":"Botero JB, Louren\u00e7o RCG, Rodrigues-Filho CAS, Ramos TPA, Pinto LME, Garcez DS (2021) List of Continental Fishes of Cear\u00e1. 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