{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,21]],"date-time":"2026-09-21T17:54:21Z","timestamp":1790013261087,"version":"4.0.1"},"reference-count":43,"publisher":"Cambridge University Press (CUP)","license":[{"start":{"date-parts":[[2022,3,2]],"date-time":"2022-03-02T00:00:00Z","timestamp":1646179200000},"content-version":"unspecified","delay-in-days":60,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Helminthol."],"published-print":{"date-parts":[[2022]]},"abstract":"<jats:title>Abstract<\/jats:title>\n\t  <jats:p>In this study we described two new trematode species, <jats:italic>Lecithostaphylus halongi<\/jats:italic> n. sp. (Zoogonidae, Lecithostaphylinae) and <jats:italic>Gymnotergestia strongyluri<\/jats:italic> n. sp. (Fellodistomidae, Tergestiinae), on the basis of morphological and molecular data. Adult worms of these two species were collected from, respectively, <jats:italic>Hemiramphus<\/jats:italic> spp. (Hemiramphidae) and <jats:italic>Strongylura strongylura<\/jats:italic> (Belonidae) caught in the coastal waters of Vietnam. Adult worms of <jats:italic>L<\/jats:italic>. <jats:italic>halongi<\/jats:italic> n. sp. are morphologically close to <jats:italic>Lecithostaphylus gibsoni<\/jats:italic> Cribb, Bray &amp; Barker, 1992 ex <jats:italic>Abudefduf whitleyi<\/jats:italic> from Heron Island and <jats:italic>Lecithostaphylus depauperati<\/jats:italic> Yamaguti, 1970 ex <jats:italic>Hemiramphus depauperatus<\/jats:italic> from Hawaii, but differ from these species in having a larger cirrus sac and a different arrangement of vitelline fields. They also differ from <jats:italic>Lecithostaphylus brayi<\/jats:italic> Caba\u00f1as-Granillo, Sol\u00f3rzano-Garc\u00eda, Mendoza-Garfias &amp; P\u00e9rez-Ponce de Le\u00f3n, 2020 in the 28S ribosomal DNA (rDNA) sequence data at the interspecific level. Adult worms of <jats:italic>G<\/jats:italic>. <jats:italic>strongyluri<\/jats:italic> n. sp. ex <jats:italic>S<\/jats:italic>. <jats:italic>strongylura<\/jats:italic> are morphologically similar to <jats:italic>Gymnotergestia chaetodipteri<\/jats:italic>, the only previously known species of this genus, described from <jats:italic>Chaetodipterus faber<\/jats:italic> in Jamaica. The new species differs from <jats:italic>G<\/jats:italic>. <jats:italic>chaetodipteri<\/jats:italic> in body shape, testicular arrangement and the size of the pharynx and eggs. The 28S rDNA-based phylogenetic analysis indicates that <jats:italic>G<\/jats:italic>. <jats:italic>strongyluri<\/jats:italic> n. sp. is closely related to <jats:italic>Tergestia<\/jats:italic> spp., rendering <jats:italic>Tergestia<\/jats:italic> paraphyletic. Genetic divergence values between <jats:italic>G<\/jats:italic>. <jats:italic>strongyluri<\/jats:italic> n. sp. and <jats:italic>Tergestia<\/jats:italic> spp. are similar to those among species in the genera <jats:italic>Tergestia<\/jats:italic>, <jats:italic>Steringophorus<\/jats:italic> and <jats:italic>Proctoeces<\/jats:italic>. Our molecular results indicate that <jats:italic>G<\/jats:italic>. <jats:italic>strongyluri<\/jats:italic> n. sp. and <jats:italic>Tergestia<\/jats:italic> spp. may belong the same genus, but additional molecular data are needed for the final conclusion.<\/jats:p>","DOI":"10.1017\/s0022149x21000730","type":"journal-article","created":{"date-parts":[[2022,3,2]],"date-time":"2022-03-02T10:11:35Z","timestamp":1646215895000},"source":"Crossref","is-referenced-by-count":3,"title":["New trematode species <i>Lecithostaphylus halongi<\/i> n. sp. (Zoogonidae, Microphalloidea) and <i>Gymnotergestia strongyluri<\/i> n. sp. (Fellodistomidae, Gymnophalloidea) from beloniform fishes in Vietnam"],"prefix":"10.1017","volume":"96","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8417-3424","authenticated-orcid":false,"given":"D.M.","family":"Atopkin","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"V.V.","family":"Besprozvannykh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"N.D.","family":"Ha","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"H.V.","family":"Nguyen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"T.V.","family":"Nguyen","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2022,3,2]]},"reference":[{"key":"S0022149X21000730_ref24","doi-asserted-by":"publisher","DOI":"10.5962\/bhl.part.7052"},{"key":"S0022149X21000730_ref34","doi-asserted-by":"publisher","DOI":"10.1186\/s13071-020-04547-8"},{"key":"S0022149X21000730_ref8","first-page":"50","article-title":"Lecithostaphylus tylosuri sp. nov. 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