{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,1]],"date-time":"2026-10-01T01:09:42Z","timestamp":1790816982069,"version":"4.1.0"},"reference-count":8,"publisher":"Pensoft Publishers","license":[{"start":{"date-parts":[[2019,12,10]],"date-time":"2019-12-10T00:00:00Z","timestamp":1575936000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100005156","name":"Alexander von Humboldt-Stiftung","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100005156","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001655","name":"Deutscher Akademischer Austauschdienst","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001655","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["ZK"],"abstract":"<jats:p>The <jats:italic>Siphloplecton jaegeri<\/jats:italic> species group is established here for three extinct species, namely for the earlier described <jats:italic>Siphloplecton jaegeri<\/jats:italic> Demoulin, 1968, and for two new species from Eocene Baltic amber, <jats:italic>Siphloplecton landolti<\/jats:italic><jats:bold>sp. nov.<\/jats:bold> and <jats:italic>Siphloplecton studemannae<\/jats:italic><jats:bold>sp. nov.<\/jats:bold> Based on the well-preserved specimens of these species, a diagnosis is provided for the newly established species group. Representatives of the <jats:italic>S. jaegeri<\/jats:italic> species group are characterized by the presence of large, medially contiguous eyes, stout pointed setae along the outer margin of the foretibia, three intercalaries in the cubital field of the forewing, and elongated penis lobes, which are apically triangular or rounded, medially contiguous, and with a V-shaped cleft apically. Further new specimens of the <jats:italic>S. jaegeri<\/jats:italic> species group are documented that cannot be attributed to species level due to their poor preservation. Finally, a key to male adults of fossil species of <jats:italic>Siphloplecton<\/jats:italic> is given.<\/jats:p>","DOI":"10.3897\/zookeys.898.47118","type":"journal-article","created":{"date-parts":[[2019,12,10]],"date-time":"2019-12-10T09:57:22Z","timestamp":1575971842000},"page":"1-26","source":"Crossref","is-referenced-by-count":7,"title":["Revision of fossil Metretopodidae (Insecta, Ephemeroptera) in Baltic amber \u2013 Part 4: Description of two new species of Siphloplecton Clemens, 1915, with notes on the new S. jaegeri species group and with key to fossil male adults of Siphloplecton"],"prefix":"10.3897","volume":"898","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2196-3327","authenticated-orcid":true,"given":"Roman J.","family":"Godunko","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christian","family":"Neumann","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5577-137X","authenticated-orcid":true,"given":"Arnold H.","family":"Staniczek","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"2258","published-online":{"date-parts":[[2019,12,10]]},"reference":[{"key":"47118_B1","author":"Berner","year":"1978"},{"key":"47118_B2","doi-asserted-by":"publisher","DOI":"10.1002\/mmnd.4810150110"},{"key":"47118_B3","author":"Demoulin","year":"1970"},{"key":"47118_B4","doi-asserted-by":"publisher","DOI":"10.1007\/978-94-007-0872-3"},{"key":"47118_B5","first-page":"41","article-title":"Die im Bernstein befindlichen Neuropteren der Vorwelt.","author":"Pictet-Baraban","year":"1856","journal-title":"Zweiter Band, II. Abtheilung. Nicolaische Buchhandlung, Berlin"},{"key":"47118_B6","first-page":"57","article-title":"Revision of fossil Metretopodidae (Insecta: Ephemeroptera) in Baltic amber. \u2013 Part 1: Type specimens of hitherto described fossil species of Siphloplecton Clemens, 1915 and Metretopus Eaton, 1901, with description of four new fossil species of Siphloplecton.","volume":"5","author":"Staniczek","year":"2012","journal-title":"Palaeodiversity"},{"key":"47118_B7","doi-asserted-by":"publisher","DOI":"10.1080\/08912963.2014.910203"},{"key":"47118_B8","doi-asserted-by":"publisher","DOI":"10.11646\/zootaxa.4103.1.1"}],"container-title":["ZooKeys"],"original-title":[],"link":[{"URL":"https:\/\/zookeys.pensoft.net\/article\/47118\/download\/pdf\/","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/zookeys.pensoft.net\/article\/47118\/download\/xml\/","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/zookeys.pensoft.net\/article_preview.php?id=47118&skip_redirect=1","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2019,12,10]],"date-time":"2019-12-10T09:57:27Z","timestamp":1575971847000},"score":1,"resource":{"primary":{"URL":"https:\/\/zookeys.pensoft.net\/article\/47118\/"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,12,10]]},"references-count":8,"URL":"https:\/\/doi.org\/10.3897\/zookeys.898.47118","relation":{},"ISSN":["1313-2970","1313-2989"],"issn-type":[{"value":"1313-2970","type":"electronic"},{"value":"1313-2989","type":"print"}],"subject":[],"published":{"date-parts":[[2019,12,10]]}}}