{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T07:50:04Z","timestamp":1777621804118,"version":"3.51.4"},"reference-count":69,"publisher":"Walter de Gruyter GmbH","issue":"1","license":[{"start":{"date-parts":[[2021,1,1]],"date-time":"2021-01-01T00:00:00Z","timestamp":1609459200000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2021,1,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    The identity of\n                    <jats:italic>Panagrellus pycnus<\/jats:italic>\n                    , the type species of the genus\n                    <jats:italic>Panagrellus<\/jats:italic>\n                    , is discussed after studying specimens from a cultured population collected in Italy that fits the original material of the species. A new characterization is consequently provided as follows: body 0.93\u20131.32\u2009mm long, lip region continuous with the adjoining body, stoma with gymnostom very reduced, pharynx with not swollen metacorpus, neck 161\u2013203\u2009\u00b5m long, excretory pore at level of the metacorpus, post-vulval uterine sac 99\u2013162\u2009\u00b5m long or 2.6\u20133.8 times as long as the body diameter divided in a short tubular proximal part and a long swollen distal part, vulva post-equatorial (\n                    <jats:italic>V<\/jats:italic>\n                    \u00a0=\u00a063\u201369), female tail conical elongate with acute terminus (133\u2013170\u2009\u00b5m,\n                    <jats:italic>c<\/jats:italic>\n                    \u00a0=\u00a06.8\u20138.1,\n                    <jats:italic>c\u2019<\/jats:italic>\n                    \u00a0=\u00a04.9\u20137.0), male tail conical elongate with acute terminus (104\u2013137\u2009\u00b5m,\n                    <jats:italic>c<\/jats:italic>\n                    \u00a0=\u00a07.8\u201310.9,\n                    <jats:italic>c\u2019<\/jats:italic>\n                    \u00a0=\u00a03.6\u20135.1), and spicules 70\u201381\u2009\u00b5m long having angular hook-like and very curved ventrad lamina ending in a spatulate tip with a refringent forked axis. The evolutionary relationships of this species and the genus\n                    <jats:italic>Panagrellus<\/jats:italic>\n                    , as derived from the analyses of 18S and 28S rDNA fragments, are discussed. Additionally, the phylogenetic relationships among the members of the infraorder Panagrolaimomorpha is studied, being the genus\n                    <jats:italic>Tarantobelus<\/jats:italic>\n                    transferred to the family Panagrolaimidae and the new subfamily Tarantobelinae n. subfam. is proposed to accommodate it.\n                  <\/jats:p>","DOI":"10.21307\/jofnem-2021-080","type":"journal-article","created":{"date-parts":[[2021,10,1]],"date-time":"2021-10-01T08:11:14Z","timestamp":1633075874000},"page":"1-20","source":"Crossref","is-referenced-by-count":5,"title":["Redescription and phylogenetic analysis of the type species of the genus\n                    <i>Panagrellus<\/i>\n                    Thorne, 1938 (Rhabditida, Panagrolaimidae),\n                    <i>P. pycnus<\/i>\n                    Thorne, 1938, including the first SEM study"],"prefix":"10.2478","volume":"53","author":[{"given":"Joaqu\u00edn","family":"Abolafia","sequence":"first","affiliation":[{"name":"Departamento de Biolog\u00eda Animal, Biolog\u00eda Vegetal y Ecolog\u00eda, Universidad de Ja\u00e9n, Campus \u201cLas Lagunillas\u201d s\/n. 23071 , Ja\u00e9n , Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Matteo","family":"Vecchi","sequence":"additional","affiliation":[{"name":"Department of Biological and Environmental Science, University of Jyvaskyla , PO Box 35 , , Jyvaskyla , Finland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"374","published-online":{"date-parts":[[2021,10,1]]},"reference":[{"key":"2026042817332676245_j_jofnem-2021-080_ref_001","doi-asserted-by":"crossref","unstructured":"Abolafia, J. 2015. A low-cost technique to manufacture a container to process meiofauna for scanning electron microscopy. Microscopy Research and Technique 78:771\u2013776, doi: 10.1002\/jemt.22538.","DOI":"10.1002\/jemt.22538"},{"key":"2026042817332676245_j_jofnem-2021-080_ref_002","doi-asserted-by":"crossref","unstructured":"Abolafia, J. and Pe\u00f1a-Santiago, R. 2017. On the identity of Chiloplacus magnus Rashid and Heyns, 1990 and C. insularis Orselli and Vinciguerra, 2002 (Rhabditida: Cephalobidae), two confusable species. Nematology 19:1017\u20131034, doi: 10.1163\/15685411\u201300003104.","DOI":"10.1163\/15685411-00003104"},{"key":"2026042817332676245_j_jofnem-2021-080_ref_003","doi-asserted-by":"crossref","unstructured":"Abolafia, J. and Pe\u00f1a-Santiago, R. 2018. Morphological and molecular characterization of Tarantobelus arachnicida gen. n., sp. n. (Nematoda, Rhabditida, Brevibuccidae), a parasitic nematode of tarantulas. 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