Fossil record of the mayfly family Ephemerellidae (Insecta: Ephemeroptera), with description of new species and first report of Ephemerellinae from Baltic amber

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F18%3A00482075" target="_blank" >RIV/60077344:_____/18:00482075 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1080/14772019.2017.1388299" target="_blank" >http://dx.doi.org/10.1080/14772019.2017.1388299</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/14772019.2017.1388299" target="_blank" >10.1080/14772019.2017.1388299</a>

Result language

angličtina

Original language name

Fossil record of the mayfly family Ephemerellidae (Insecta: Ephemeroptera), with description of new species and first report of Ephemerellinae from Baltic amber

Original language description

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 nvestigial 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 nreassessment 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.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10616 - Entomology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Systematic Palaeontology

ISSN

1477-2019

e-ISSN

—

Volume of the periodical

16

Issue of the periodical within the volume

15

Country of publishing house

GB - UNITED KINGDOM

Number of pages

17

Pages from-to

1319-1335

UT code for WoS article

000442290900003

EID of the result in the Scopus database

2-s2.0-85041370741