The first fossil immature of Elmidae: an unusual riffle beetle larva preserved in Baltic amber.
Amber
Elmidae
Eocene
Operculum
Processes
Journal
PeerJ
ISSN: 2167-8359
Titre abrégé: PeerJ
Pays: United States
ID NLM: 101603425
Informations de publication
Date de publication:
2022
2022
Historique:
received:
13
12
2021
accepted:
07
02
2022
entrez:
13
4
2022
pubmed:
14
4
2022
medline:
14
4
2022
Statut:
epublish
Résumé
Elmidae, riffle beetles, have both adult and immature stages that show specializations for water environments. Fossils of adults of Elmidae are already known from amber, however a record of immatures was so far lacking. We report here the first fossil larva of Elmidae, preserved in Baltic amber. To be able to access details of the body hidden by inclusions and "Verlumung" we conducted, in addition to optical documentation methods, micro-CT and synchrotron documentation methods. The larva is characterised by prominent dorso-lateral and lateral processes and a plate-like ventral operculum at the end of the abdomen. The new fossil has similarities in the general body shape and the prominent characters with some modern larvae of Elmidae. The posterior protrusions on the trunk end possibly represent gills, which would imply that fossil larvae of Elmidae also led a water-related life style similar to modern representatives.
Identifiants
pubmed: 35415015
doi: 10.7717/peerj.13025
pii: 13025
pmc: PMC8995018
doi:
Substances chimiques
Amber
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Pagination
e13025Informations de copyright
©2022 Zippel et al.
Déclaration de conflit d'intérêts
The authors declare there are no competing interests.
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