{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T11:02:29Z","timestamp":1789383749014,"version":"build-2803163510"},"reference-count":27,"publisher":"Cambridge University Press (CUP)","license":[{"start":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T00:00:00Z","timestamp":1789344000000},"content-version":"unspecified","delay-in-days":256,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Helminthol."],"published-print":{"date-parts":[[2026]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    <jats:italic>Hemicriconemoides<\/jats:italic>\n                    spp. are sheathoid, root-ectoparasitic nematodes with complex taxonomy due to overlapping morphology and cryptic diversity. In this study, an integrative taxonomic approach combining morphology and molecular data supports the characterization of\n                    <jats:italic>Hemicriconemoides vietnamensis<\/jats:italic>\n                    sp. n. recovered from the rhizosphere of roses in Vietnam. The new species females are distinguished by a slightly ventrally curved body with a closely fitting sheath lacking anastomoses, a lip region with two annuli and a protruding first annulus, a long (62\u201368 \u03bcm) mostly straight stylet with rounded, posteriorly sloping knobs, and an excretory pore located 5\u20137 annuli posterior to the pharyngeal base. The vulva is slit-like without vulval flaps, the vagina is oblique, and the tail is bluntly to pointed conical with a rounded terminus. Males were not found. Morphologically, the new species is most similar to\n                    <jats:italic>H. litchi<\/jats:italic>\n                    ,\n                    <jats:italic>H. rotundoides<\/jats:italic>\n                    , and\n                    <jats:italic>H. strictathecatus<\/jats:italic>\n                    , but can be differentiated by a combination of morphological and molecular characterizations. Molecular analyses of ITS rDNA, D2\u2013D3 expansion segments of 28S rDNA, and COI mtDNA consistently support the distinct status of\n                    <jats:italic>H. vietnamensis<\/jats:italic>\n                    sp. n. Bayesian phylogenetic analyses place the new species in a well-supported clade with\n                    <jats:italic>H. phoenicis<\/jats:italic>\n                    and\n                    <jats:italic>H. strictathecatus<\/jats:italic>\n                    , forming a distinct lineage across all markers. Species delimitation analyses (bPTP, GMYC, and ASAP) consistently recover\n                    <jats:italic>Hemicriconemoides vietnamensis<\/jats:italic>\n                    sp. n. as an independent species. These results provide clear evidence for the establishment of\n                    <jats:italic>Hemicriconemoides vietnamensis<\/jats:italic>\n                    sp. n. and expand the documented diversity of\n                    <jats:italic>Hemicriconemoides<\/jats:italic>\n                    in Vietnam, where molecular data for the genus remain limited.\n                  <\/jats:p>","DOI":"10.1017\/s0022149x26101606","type":"journal-article","created":{"date-parts":[[2026,9,14]],"date-time":"2026-09-14T10:02:39Z","timestamp":1789380159000},"source":"Crossref","is-referenced-by-count":0,"title":["Molecular and morphological characterization of\n                    <i>Hemicriconemoides vietnamensis<\/i>\n                    sp. n. (Nematoda: Criconematidae) associated with rose (\n                    <i>Rosa gallica<\/i>\n                    L.) in Vietnam"],"prefix":"10.1017","volume":"100","author":[{"given":"Duyen Thi","family":"Nguyen","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02jmfj006","id-type":"ROR","asserted-by":"publisher"}],"name":"Institute of Biology"},{"name":"Vietnam Academy of Science and Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Phap Quang","family":"Trinh","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02jmfj006","id-type":"ROR","asserted-by":"publisher"}],"name":"Institute of Biology"},{"name":"Vietnam Academy of Science and Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4629-2590","authenticated-orcid":false,"given":"Linh Thi Mai","family":"Le","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/02jmfj006","id-type":"ROR","asserted-by":"publisher"}],"name":"Institute of Biology"},{"name":"Vietnam Academy of Science and Technology"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sen Thi","family":"Dao","sequence":"additional","affiliation":[{"name":"Faculty of Biology Hanoi National University of Education"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nhung Thi","family":"Le","sequence":"additional","affiliation":[{"name":"Faculty of Biology Hanoi National University of Education"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9476-935X","authenticated-orcid":false,"given":"Tien Huu","family":"Nguyen","sequence":"additional","affiliation":[{"name":"Duy Tan University"},{"name":"Duy Tan University"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2026,9,14]]},"reference":[{"key":"S0022149X26101606_r2","first-page":"1","article-title":"Molecular characterisation of some plant-parasitic nematodes (Nematoda: Tylenchida) from Belgium","volume":"28","author":"Etongwe","year":"2020","journal-title":"Russian Journal of Nematology"},{"key":"S0022149X26101606_r9","doi-asserted-by":"publisher","DOI":"10.1111\/ppa.13796"},{"key":"S0022149X26101606_r12","doi-asserted-by":"publisher","DOI":"10.1080\/10635150600852011"},{"key":"S0022149X26101606_r26","first-page":"35","article-title":"MOTUs, morphology, and biodiversity estimation: a case study using nematodes of the suborder Criconematina and a conserved 18S DNA barcode","volume":"43","author":"Powers","year":"2011","journal-title":"Journal of 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