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Helminthol."],"published-print":{"date-parts":[[2025]]},"abstract":"<jats:title>Abstract<\/jats:title>\n\t  <jats:p>This study describes a new species of <jats:italic>Pharyngodon<\/jats:italic> Diesing, 1961 (Nematoda: Pharyngodonidae) in teiid lizards <jats:italic>Ameivula ocellifera<\/jats:italic> (Spix, 1895) (Squamata: Teiidae) from a Caatinga morphoclimatic domain in the state of Pernambuco, Brazil. <jats:italic>Pharyngodon ameivulum<\/jats:italic> n. sp., like 11 other species of the genus, features males without spicules, females with truncated eggs, and no tail spines. However, the new species is distinguished by a unique set of morphological characteristics, such as males possessing three pairs of caudal papillae, with the first pair precloacal, the second adcloacal, and the third postcloacal (arrangement 1:1:1), the second pair (adcloacal) of papillae having a bifurcated distal end, and females with lateral body alae. Molecular analysis of the 18S rDNA, 28S rDNA, and 18S + 28S concatenated sequences genes reveals that <jats:italic>P. ameivulum<\/jats:italic> n. sp. clusters with representatives of Pharyngodonidae from the genera <jats:italic>Skrjabinodon<\/jats:italic> Inglis, 1968 and <jats:italic>Spauligodon<\/jats:italic> Skrjabin, Schikhobalova &amp; Lagodovska, 1960, forming a basal clade to the clade composed of <jats:italic>Spauligodon<\/jats:italic> spp. and <jats:italic>Skrjabinodon trimorphi<\/jats:italic> Ainsworth, 1990. These are the first phylogenetic assays to include a species of <jats:italic>Pharyngodon.<\/jats:italic><\/jats:p>","DOI":"10.1017\/s0022149x24001007","type":"journal-article","created":{"date-parts":[[2025,2,14]],"date-time":"2025-02-14T07:09:03Z","timestamp":1739516943000},"source":"Crossref","is-referenced-by-count":1,"title":["First molecular characterisation of a species of <i>Pharyngodon<\/i> Diesing, 1861 (Nematoda: Pharyngodonidae), and description of <i>Pharyngodon ameivulum<\/i> n. sp. in a lizard from Caatinga in Brazil"],"prefix":"10.1017","volume":"99","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4669-9091","authenticated-orcid":false,"given":"A.C.S.","family":"Ferreira","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5220-7252","authenticated-orcid":false,"given":"F.M.","family":"Vieira","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1960-4512","authenticated-orcid":false,"given":"M.C.","family":"Diniz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"D.C.N.","family":"Silva","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4491-0236","authenticated-orcid":false,"given":"L.B.","family":"Ribeiro","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7468-6274","authenticated-orcid":false,"given":"L.C.","family":"Muniz-Pereira","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2025,2,14]]},"reference":[{"key":"S0022149X24001007_r46","doi-asserted-by":"publisher","DOI":"10.1017\/S0031182016002365"},{"key":"S0022149X24001007_r5","first-page":"47","article-title":"The occurrence of Pharyngodon mamillatus (Linstow, 1897) (Oxyuroidea, Pharyngodonidae) in a tropical wall gecko","volume":"4","author":"Ajala","year":"2015","journal-title":"International Journal of Applied and Natural Sciences"},{"key":"S0022149X24001007_r16","doi-asserted-by":"publisher","DOI":"10.2478\/s11686-007-0045-9"},{"key":"S0022149X24001007_r49","doi-asserted-by":"publisher","DOI":"10.1515\/ap-2017-0097"},{"key":"S0022149X24001007_r63","unstructured":"SpeciesLink (2023) Species link network. 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