{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T06:48:38Z","timestamp":1791787718443,"version":"4.3.4"},"reference-count":24,"publisher":"Cambridge University Press (CUP)","license":[{"start":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T00:00:00Z","timestamp":1791763200000},"content-version":"unspecified","delay-in-days":284,"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                    A new species of the genus\n                    <jats:italic>Sychnotylenchus<\/jats:italic>\n                    ,\n                    <jats:italic>S. golestanicus<\/jats:italic>\n                    sp. n., is described and illustrated from northern Iran. The new species is characterised by a body length of 595\u2013831 \u03bcm, a continuous lip region, a very slender stylet 7\u201310 \u03bcm long with small but distinct knobs, a lateral field with six to eight incisures, a heart-shaped median bulb with a refractive valve, and an excretory pore located at or anterior to the median bulb. The crustaformeria (eggshell-forming zone) consists of 16 cells arranged in 4 longitudinal rows of 4 large, rounded cells each, with the anterior part expanded and functioning as a spermatheca. Females have the vulva situated at 88.5\u201390.3% of body length, a post-vulval uterine sac measuring 1.4\u20132.2 times the vulval body diameter, and a short, broad tail with a truncate to slightly flattened terminus, usually showing a shallow terminal depression and lacking a mucro. Males possess smoothly curved spicules 16\u201321 \u03bcm long, a simple gubernaculum approximately one-third of the spicule length, and broad peloderan bursal alae. The new species is morphologically most similar to\n                    <jats:italic>S. hibisci<\/jats:italic>\n                    , but differs from the mentioned species by a combination of characters including the shape of the female tail, the number of lateral field incisures, the structure of the crustaformeria, the length of the post-vulval uterine sac, and the position of the excretory pore. Phylogenetic analysis based on 18S rDNA sequences placed\n                    <jats:italic>S. golestanicus<\/jats:italic>\n                    sp. n. within a well-supported clade (posterior probability = 1.00) comprising\n                    <jats:italic>S. hibisci<\/jats:italic>\n                    and other\n                    <jats:italic>Sychnotylenchus<\/jats:italic>\n                    species, supporting its placement within the genus\n                    <jats:italic>Sychnotylenchus.<\/jats:italic>\n                    The congruence between morphological and molecular evidence supports the recognition of\n                    <jats:italic>S. golestanicus<\/jats:italic>\n                    sp. n. as a distinct species. The present study also highlights the need for additional molecular markers and further integrative taxonomic studies, potentially including TEM investigations, to clarify the taxonomic significance of the crustaformeria and better resolve phylogenetic relationships within the Sychnotylenchinae.\n                  <\/jats:p>","DOI":"10.1017\/s0022149x26102399","type":"journal-article","created":{"date-parts":[[2026,10,12]],"date-time":"2026-10-12T06:35:03Z","timestamp":1791786903000},"source":"Crossref","is-referenced-by-count":0,"title":["Description of\n                    <i>Sychnotylenchus golestanicus<\/i>\n                    sp. n. (Nematoda: Anguinoidea) from bark beetle-associated decaying wood in northern Iran"],"prefix":"10.1017","volume":"100","author":[{"given":"M.E.","family":"Agh Atabai","sequence":"first","affiliation":[{"id":[{"id":"https:\/\/ror.org\/01w6vdf77","id-type":"ROR","asserted-by":"publisher"}],"name":"Gorgan University of Agricultural Sciences and Natural Resources"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8892-4619","authenticated-orcid":false,"given":"F.","family":"Aliramaji","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/01w6vdf77","id-type":"ROR","asserted-by":"publisher"}],"name":"Gorgan University of Agricultural Sciences and Natural Resources"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0680-3459","authenticated-orcid":false,"given":"E.","family":"Shokoohi","sequence":"additional","affiliation":[{"id":[{"id":"https:\/\/ror.org\/017p87168","id-type":"ROR","asserted-by":"publisher"}],"name":"University of Limpopo"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2026,10,12]]},"reference":[{"key":"S0022149X26102399_r10","volume-title":"Agricultural Handbook 446","author":"Massey","year":"1974"},{"key":"S0022149X26102399_r21","doi-asserted-by":"publisher","DOI":"10.1163\/15685411-bja10358"},{"key":"S0022149X26102399_r23","first-page":"949","article-title":"Aphelenchoides xylophilus n. sp., a nematode associated with blue-stain and other fungi in timber","volume":"48","author":"Steiner","year":"1934","journal-title":"Journal of Agricultural Research"},{"key":"S0022149X26102399_r13","first-page":"375","article-title":"A taxonomic review of the genera of the Aphelenchoidea (Fuchs, 1937) Thorne, 1949 (Nematoda: Tylenchida)","volume":"2","author":"Nickle","year":"1970","journal-title":"Journal of Nematology"},{"key":"S0022149X26102399_r6","doi-asserted-by":"publisher","DOI":"10.1093\/sysbio\/sys062"},{"key":"S0022149X26102399_r1","first-page":"351","article-title":"Redescription ou modifications de quelques techniques utilis\u00e9es dans l\u2019\u00e9tude des n\u00e9ma- todes phytoparasitaires","volume":"34","author":"De Grisse","year":"1969","journal-title":"Mededelingen van de Rijksfaculteit Landbouwwetenschappen Gent"},{"key":"S0022149X26102399_r7","doi-asserted-by":"publisher","DOI":"10.1163\/15685411-bja10128"},{"key":"S0022149X26102399_r24","doi-asserted-by":"publisher","DOI":"10.1163\/15685411-00003261"},{"key":"S0022149X26102399_r14","volume-title":"MrModeltest Version 2. 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Vol. III. Taxonomy of Nematodes of the Superfamily Tylenchoidea. Izdatelstvo \u2018Nauka\u2019, Moscow, 253 pp. (In Russian.) English translation available from US Dept. Comm. Nat. Tech. Inf. Serv., Springfield, USA, 200 pp."},{"key":"S0022149X26102399_r20","first-page":"1","article-title":"Die Nematoden der Ipiden","volume":"6","author":"R\u00fchm","year":"1956","journal-title":"Parasitologische SchriftenReihe"},{"key":"S0022149X26102399_r4","unstructured":"Goodey, JB (1963) Soil and Freshwater Nematodes, 2nd edn, revised and rewritten from the original by T. Goodey. London, UK: Methuen & Co. Ltd.; New York, USA: John Wiley & Sons, 544 pp."},{"key":"S0022149X26102399_r2","first-page":"163","article-title":"A reappraisal of Tylenchina (Nemata). 4. 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