{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,24]],"date-time":"2026-09-24T10:18:02Z","timestamp":1790245082319,"version":"4.1.0"},"reference-count":66,"publisher":"PeerJ","license":[{"start":{"date-parts":[[2018,8,8]],"date-time":"2018-08-08T00:00:00Z","timestamp":1533686400000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"German Federal Ministry of Education and Research (BMBF)","award":["05K2012 (UFO2)"],"award-info":[{"award-number":["05K2012 (UFO2)"]}]},{"name":"German Federal Ministry of Education and Research (BMBF)","award":["05K2013 (ASTOR)"],"award-info":[{"award-number":["05K2013 (ASTOR)"]}]},{"name":"German Federal Ministry of Education and Research (BMBF)","award":["05K2016 (NOVA)"],"award-info":[{"award-number":["05K2016 (NOVA)"]}]},{"name":"US National Science Foundation","award":["DBI-1356381"],"award-info":[{"award-number":["DBI-1356381"]}]},{"name":"US National Science Foundation","award":["DEB-1353252"],"award-info":[{"award-number":["DEB-1353252"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>\n                    Ceraphronoids are some of the most commonly collected hymenopterans, yet they remain rare in the fossil record.\n                    <jats:italic>Conostigmus talamasi<\/jats:italic>\n                    Mik\u00f3 and Trietsch, sp. nov. from Baltic amber represents an intermediate form between the type genus,\n                    <jats:italic>Megaspilus<\/jats:italic>\n                    , and one of the most species-rich megaspilid genera,\n                    <jats:italic>Conostigmus<\/jats:italic>\n                    . We describe the new species using 3D data collected with synchrotron-based micro-CT equipment. This non-invasive technique allows for quick data collection in unusually high resolution, revealing morphological traits that are otherwise obscured by the amber. In describing this new species, we revise the diagnostic characters for Ceraphronoidea and discuss possible reasons why minute wasps with a pterostigma are often misidentified as ceraphronoids. Based on the lack of ceraphronoid characteristics, we remove\n                    <jats:italic>Dendrocerus dubitatus<\/jats:italic>\n                    Brues, 1937, Stigmaphronidae, and Radiophronidae from Ceraphronoidea and consider them as\n                    <jats:italic>incertae sedis<\/jats:italic>\n                    . We also provide some guidance for their future classification.\n                  <\/jats:p>","DOI":"10.7717\/peerj.5174","type":"journal-article","created":{"date-parts":[[2018,8,8]],"date-time":"2018-08-08T04:44:32Z","timestamp":1533703472000},"page":"e5174","source":"Crossref","is-referenced-by-count":11,"title":["A new megaspilid wasp from Eocene Baltic amber (Hymenoptera: Ceraphronoidea), with notes on two non-ceraphronoid families: Radiophronidae and Stigmaphronidae"],"prefix":"10.7717","volume":"6","author":[{"given":"Istv\u00e1n","family":"Mik\u00f3","sequence":"first","affiliation":[{"name":"Frost Entomological Museum, Department of Entomology, Pennsylvania State University, University Park, PA, United States of America"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Thomas","family":"van de Kamp","sequence":"additional","affiliation":[{"name":"Laboratory for Applications of Synchrotron Radiation, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carolyn","family":"Trietsch","sequence":"additional","affiliation":[{"name":"Frost Entomological Museum, Department of Entomology, Pennsylvania State University, University Park, PA, United States of America"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jonah M.","family":"Ulmer","sequence":"additional","affiliation":[{"name":"Frost Entomological Museum, Department of Entomology, Pennsylvania State University, University Park, PA, United States of America"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marcus","family":"Zuber","sequence":"additional","affiliation":[{"name":"Laboratory for Applications of Synchrotron Radiation, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tilo","family":"Baumbach","sequence":"additional","affiliation":[{"name":"Laboratory for Applications of Synchrotron Radiation, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany"},{"name":"Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology (KIT), Eggenstein-Leopoldshafen, Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andrew R.","family":"Deans","sequence":"additional","affiliation":[{"name":"Frost Entomological Museum, Department of Entomology, Pennsylvania State University, University Park, PA, United States of America"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"4443","published-online":{"date-parts":[[2018,8,8]]},"reference":[{"key":"10.7717\/peerj.5174\/ref-1","first-page":"654","article-title":"Basoko Risbec (Hymenoptera, Ceraphronoidea), a genus new to the Palearctic fauna, and an identification key to the genera of the Ceraphronoidea","volume":"57","author":"Alekseev","year":"1978","journal-title":"Entomologicheskoye 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