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首页> 外文期刊>Journal of Systematic Palaeontology >Fossil record of the mayfly family Ephemerellidae (Insecta: Ephemeroptera), with description of new species and first report of Ephemerellinae from Baltic amber
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Fossil record of the mayfly family Ephemerellidae (Insecta: Ephemeroptera), with description of new species and first report of Ephemerellinae from Baltic amber

机译：the科E属（Esecmerellidae）的化石记录，包括新物种的描述和来自波罗的海琥珀的species属的首次报道。

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摘要

The fossil record of the mayfly family Ephemerellidae is reviewed. Of previously described fossil Ephemerellidae, all records but one are doubtful or erroneous. We reinvestigate the holotype of Ephemerella viscata Demoulin, 1968 from Eocene Baltic amber and confirm its previous placement within the subfamily Timpanoginae Allen, 1984, based on the presence of vestigial gill sockets on abdominal segments Ⅳ-Ⅶ only. It is transferred to the genus Eurylophella Tiensuu, 1935 [Eurylophella viscata (Demoulin, 1968) comb, nov.] based on proportions of the forelegs, elongated abdominal segment IX, and the shape of the subimaginal penis. Additionally, we describe two new specimens from Eocene Baltic amber: Ephemerella trigonoptera sp. nov. represents the first fossil record of subfamily Ephemerellinae. It can be separated from other representatives of Ephemerella Walsh, 1862 sensu lato by the shape of the hind wings, which are remarkably narrowed towards the apex, with a costal projection located rather proximally. The second new specimen, a male subimago, cannot be differentiated from other Ephemerellinae due to its poor preservation. The discovery of Ephemerella trigonoptera sp. nov., together with the taxonomic reassessment of Eurylophella viscata comb, nov., provide the first reliable evidence that both subfamilies of Ephemerellidae, Ephemerellinae and Timpanoginae, date back at least to the Palaeogene. The biogeographical and palaecological implications of these findings are discussed.
机译：回顾了the类E的化石记录。在先前描述的化石星历中，除一个以外的所有记录都是可疑或错误的。我们从始新世波罗的海琥珀中重新研究了维氏短吻E属1968年的整型，并基于仅在腹部Ⅳ-Ⅶ上有残留ill窝的情况，确认了它先前在1984年的蒂姆帕诺基纳艾伦亚科中的位置。根据前肢的比例，细长的腹部节段IX和假想的阴茎的形状，将其转移到1935年的Tiersuu Tiursuu属[Eurylophella viscata（Demoulin，1968）。此外，我们描述了始新世波罗的海琥珀的两个新标本：Ephemerella trigonoptera sp。十一月代表了亚科星历亚科的第一个化石记录。可以通过后翅的形状将其与Ephemerella Walsh，1862年的苏斯拉托（Ephemerella Walsh）的其他代表分开，后翅的形状朝着顶点显着变窄，并且肋骨的突出部分位于近端。第二个新标本，一个雄性subimago，由于其保存较差而无法与其他星表属区分开。 Ephemerella trigonoptera sp。的发现。 nov。以及visov梳子对Eurylophella viscata的分类学重新评估，提供了第一个可靠的证据，表明麻黄科，麻黄科和铁皮科两个亚科至少可以追溯到古近纪。这些发现的生物地理和古生物学意义进行了讨论。

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  • 来源
    《Journal of Systematic Palaeontology》 |2018年第15期|1319-1335|共17页
  • 作者

    Arnold H. Staniczek; Roman J. Godunko; Nikita J. Kluge;

  • 作者单位

    Department of Entomology, State Museum of Natural History Stuttgart, Rosenstein 1, 70191 Stuttgart, Germany;

    State Museum of Natural History, National Academy of Sciences of Ukraine, Teatralna 18, 79008 Lviv, Ukraine and Institute of Entomology, Biology Centre, Czech Academy of Sciences, Branisovskd 31, 37005 Ceske Budejovice, Czech Republic;

    Department of Entomology. Saint Petersburg State University, Universitetskaya nab., 7/9, Saint Petersburg, 199034, Russia;

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  • 关键词

    Ephemerellinae; Timpanoginae; Baltic amber; Eocene;

    机译：麻黄科;鼓虫科波罗的海琥珀色;始新世;

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