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Issue: Vol. 8 No. 4: (In progress) August 2025
Type: Article
Published: 2025-08-29
DOI: 10.11646/palaeoentomology.8.4.8
Page range: 402-411
Abstract views: 160
PDF downloaded: 5

The first water-penny beetle (Coleoptera: Psephenidae) in Baltic amber, with a list of Dryopoidea described from the mid-late Eocene European ambers

Immanuel Kant Baltic Federal University, Nevskogo 14, Kaliningrad 236016, Russia
Institute of Life Sciences and Technologies, Daugavpils University, Vienības 13, Daugavpils LV-5401, Latvia
Eubriinae taxonomy Eocene paleodiversity fossil resin new species Coleoptera Psephenidae

Abstract

Based on a well-preserved adult inclusion in Baltic amber, the first extinct species of the subfamily Eubriinae and the first representative of the family Psephenidae from the Eocene fossil resin is described and illustrated. The new fossil species belonging to the extant genus, Macroeubria groehni sp. nov., is compared with related extant taxa. Two additional fossil records of previously described Dryopoidea from Eocene Baltic amber of the Sambian Peninsula deposited in the collection of the Kaliningrad amber museum are provided. A brief updated list of the described Dryopoidea species from Baltic and Rovno ambers is compiled. The currently described diversity of the superfamily in the mid-late Eocene European ambers consists of 11 extinct species belonging to nine genera within five families.

References

  1. Alekseev, V.I. & Jäch, M. (2016) Electrolichas circumbalticus gen. et sp. nov. (Coleoptera: Byrrhoidea: Ptilodactylidae) from Baltic amber, the first anchytarsine toed-winged beetle described from Europe. Zootaxa, 4136 (3), 593–599. https://doi.org/10.11646/zootaxa.4136.3.10
  2. Alekseev, V.I., Mitchell, J., McKellar, R.C. Barbi, M., Larsson, H. C.E. & Bukejs, A. (2021) The first described turtle beetles from Eocene Baltic amber, with notes on fossil Chelonariidae (Coleoptera: Byrrhoidea). Fossil Record, 24, 19–32. https://doi.org/10.5194/fr-24-19-2021
  3. Bao, T., Rust, J. & Wang, B. (2018) Systematics, phylogeny and taphonomy of Cretaceous Psephenidae (Insecta: Coleoptera) from Burmese amber. Palaeontographica Abteilung A: Palaeozoology—Stratigraphy, 310 (3-6), 131–159. https://doi.org/10.1127/0375-0442/2018/0086
  4. Barr, Ch.B. & Shepard, W.D. (2017) Eubria mesoamericana Barr and Shepard (Coleoptera: Psephenidae: Eubriinae), a new psephenid species from Central America with an enigmatic generic distribution. The Coleopterists Bulletin, 71 (3), 437–444. https://doi.org/10.1649/0010-065X-71.3.437
  5. Bollow, H. (1940) Die erste Helminidae (Col. Dryop.) aus Bernstein. Mitteilungen der Münchner Entomologischen Gesellschaft, 30, 117–119.
  6. Bukejs, A., Alekseev, V.I. & Jäch, M. (2015) The riffle beetles (Coleoptera: Elmidae) of the Eocene Baltic amber: Heterelmis groehni sp. nov. and Heterlimnius samlandicus (Bollow, 1940) comb. nov. Zootaxa, 3986 (4), 452–460. https://doi.org/10.11646/zootaxa.3986.4.4
  7. Cai, C.Y. & Huang, D.Y. (2018) First Mesozoic water-penny beetles from Upper Cretaceous Burmese amber (Coleoptera: Psephenidae). Cretaceous Research, 91, 202–207. https://doi.org/10.1016/j.cretres.2018.06.001
  8. Cai, C.Y., Tihelka, E., Giacomelli, M., Lawrence, J.F., Ślipiński, A., Kundrata, R., Yamamoto, Sh., Thayer, M.K., Newton, A.F., Leschen, R.A.B., Gimmel, M.L., Lü, L., Engel, M.S., Bouchard, P., Huang, D.Y., Pisani, D. & Donoghue, P.C.J. (2022) Integrated phylogenomics and fossil data illuminate the evolution of beetles. Royal Society Open Science, 9, 211771. https://doi.org/10.1098/rsos.211771
  9. Hayashi, M. & Aiba, H. (2016) A fossil record of Malacopsepheno-ides japonicus (Coleoptera, Psephenidae) from the Middle Pleistocene Shiobara Group in Shiobara, Tochigi Prefecture, Japan. Elytra, 6 (2), 301–302.
  10. Hayashi, M. & Kawakami, Y. (2009) Fossil of the genus Eubrianax (Coleoptera, Psephenidae) from the Upper Miocene Ningyôtôge Formation in Tottori Prefecture, Japan. Elytra, 37 (1), 99–103.
  11. Hayashi, M., Aiba, H., Nakano, E., Takahashi, Y. & Sato, T. (2020) Fossilized water pennies (Coleoptera: Psephenidae) in the Middle Pleistocene lake deposits in Shiobara site, Tochigi Prefecture, Japan. Japanese Journal of Systematic Entomology, 26 (1), 84–86.
  12. Hernando, C., Szawaryn, K. & Ribera, I. (2018) A new species of Platypelochares from Baltic amber (Coleoptera: Limnichidae). Acta Entomologica Musei Nationalis Pragae, 58, 17–20. https://doi.org/10.2478/aemnp-2018-0003
  13. Hieke, F. & Pietrzeniuk, E. (1984) Die Bernstein–Käfer des Museums für Naturkunde, Berlin (Insecta, Coleoptera). Mitteilungen aus dem Zoologischen Museum in Berlin, 60, 297–326.
  14. Jäch, M., Jeng, M.L., Lee, C.F. & Satô, M. (2006) Psephenidae. In: Löbl, I. & Smetana, A. (Eds), Catalogue of Palaearctic Coleoptera. Vol. 3. Apollo Books, Stenstrup, pp. 449–452.
  15. Jiang, R.X. & Chen, X.S. (2024) Two new species of the genus Mataeopsephus Waterhouse, 1876 (Coleoptera: Psephenidae) from Guizhou, China. Zootaxa, 5528 (1), 106–117. https://doi.org/10.11646/zootaxa.5528.1.9
  16. Kirejtshuk, A.G. & Prokin, A.A. (2022) New genus and species of limnichines from the Cretaceous amber of Myanmar and taxonomic notes on the family Limnichidae (Coleoptera, Polyphaga). Insects, 13 (891), 1–12. https://doi.org/10.3390/insects13100891
  17. Klebs, R. (1910) Über Bernsteineinschlüsse in allgemeinen und die Coleopteren meiner Bernsteinsammlung. Schriften der Physikalisch-ökonomischen Gesellschaft zu Königsberg, 51, 217–242.
  18. Kundrata, R., Packova, G., Kairišs, K., Bukejs, A., Hoffmannova, J. & Blank, S.M. (2021) The first Ptilodactyla Illiger, 1807 (Coleoptera: Dryopoidea: Ptilodactylidae) described from Eocene Baltic amber. Biology, 10, 877, 1–13. https://doi.org/10.3390/biology10090877
  19. Larsson, S.G. (1978) Baltic Amber—a palaeobiological study. Vol. 1. Scandinavian Science Press Ltd., Klampenborg, 192 pp. https://doi.org/10.1163/9789004631243
  20. Lawrence, J.F. (2016) 2. Classification (families & subfamilies). In: Beutel, R.G. & Leschen, R.A.B. (Eds), Handbook of Zoology—Coleoptera, Beetles. Vol. 1. Morphology and Systematics (Archostemata, Adephaga, Myxophaga, Polyphaga (partim). De Gruyter, Berlin, pp. 13–22.
  21. Lee, C.F. & Jäch, M.A. (1996) Review of the genera Eubria Latreille and Microeubria Lee and Yang (Coleoptera: Psephenidae: Eubriinae). The Coleopterists Bulletin, 50 (l), 39–51.
  22. Lee, C.F. & Satô, M. (1996) Nipponeubria yoshitomii Lee and Satô, a new species in a new genus of Eubriinae from Japan, with notes on the immature stages and description of the larva of Ectopria opaca (Kiesenwetter) (Coleoptera: Psephenidae). The Coleopterists Bulletin, 50 (2), 122–134.
  23. Lee, C.F. & Yang, P.S. (1994) Microeubria, a new genus of oriental Eubriinae (Coleoptera: Psephenidae). The Coleopterists Bulletin, 48 (4), 325–329.
  24. Lee, C.F., Jäch, M.A. & Beutel, R.G. (2016) 19.7. Psephenidae Lacordaire, 1854. In: Beutel, R.G. & Leschen, R.A.B. (Eds), Handbook of Zoology—Coleoptera, Beetles. Vol. 1. Morphology and Systematics (Archostemata, Adephaga, Myxophaga, Polyphaga (partim). 2nd edition. Walter de Gruyter, Berlin, Germany, pp. 615–628.
  25. Lee, C.F., Jäch, M.A. & Yang, P.S. (1998a) Psephenidae: II. Synopsis of Schinostethus Waterhouse, with descriptions of 14 new species (Coleoptera). Water Beetles of China, 2, 303–326.
  26. Lee, C.F., Philips, T.K. & Yang, P.S. (2003) Revision of Afroeubria Villiers (Coleoptera: Psephenidae: Eubriinae), including phylogenetic notes. Annals of the Transvaal Museum, 40, 137–143.
  27. Lee, C.F., Yang, P.S. & Satô, M. (1997) The East Asian species of the genus Macroeubria Pic (Coleoptera, Psephenidae, Eubriinae). Japanese Journal of Systematic Entomology, 3 (2), 129–160.
  28. Lee, C.F., Yang, P.S. & Satô, M. (1998b) Psephenidae: I. Notes on the East Asian species of Ectopria Leconte (Coleoptera). Water Beetles of China, 2, 297–301.
  29. Lee, C.F., Yang, P.S. & Satô, M. (1999) The Southeast Asian species of the genus Macroeubria Pic (Coleoptera, Psephenidae, Eubriinae). Japanese Journal of Systematic Entomology, 5 (2), 181–201.
  30. Lee, C.F., Satô, M., Shepard, W.D. & Jäch, M.A. (2007) Phylogeny of Psephenidae (Coleoptera: Byrrhoidea) based on larval, pupal and adult characters. Systematic Entomology, 32 (3), 502–538. https://doi.org/10.1111/j.1365-3113.2006.00374.x
  31. Li, Y.D., Huang, D.Y. & Cai, C.Y. (2022) Pseudomataeopsephus, a new genus of water penny beetles from mid-Cretaceous Burmese amber (Coleoptera: Psephenidae). Cretaceous Research, 130, 105055. https://doi.org/10.1016/j.cretres.2021.105055
  32. Motschulsky, V. (1856) Voyages. Lettres de M. de Motschulsky à M. Ménétriés. In: Études Entomologiques. Librairie Delagrave, Paris, pp. 3–38.
  33. Murvosh, C.M. (1992) On the occurrence of the water penny beetle Eubrianax edwardsii in lentic ecosystems (Coleoptera: Psephenidae). The Coleopterists Bulletin, 46, 43–51.
  34. Pütz, A., Hernando, C. & Ribera, I. (2004) A new genus of Limnichidae (Coleoptera) from Baltic amber. Insect Systematics and Evolution, 35, 329–334. https://doi.org/10.1163/187631204788920257
  35. Ross, J.R. (2024) Complete checklist of Burmese (Myanmar) amber taxa 2023. Mesozoic, 1 (1), 21–57. https://doi.org/10.11646/mesozoic.1.1.4
  36. Ruta, R., Kubisz, D. & Buczyński, P. (2011) On the occurrence of Eubria palustris (Germar, 1818) (Coleoptera: Psephenidae) in Poland. Wiadomości Entomologiczne, 30 (1), 37–46.
  37. Shepard, W.D. & Barr, Ch.B. (2014) Neoeubria inbionis Shepard & Barr, a new genus and new species of Neotropical water penny beetle (Coleoptera: Psephenidae: Eubriinae), with a key to the adult Eubriinae of the Neotropic Zone. Zootaxa, 3811 (4), 553–568. https://doi.org/10.11646/zootaxa.3811.4.7
  38. Shepard, W.D. & Barr, Ch.B. (2023) A revision of the Chilean water penny genus Tychepsephus Waterhouse, 1876 (Coleoptera, Psephenidae, Eubriinae), with description of a second species and two larval morphotypes, and notes on other Chilean Psephenidae. ZooKeys, 1164, 23–61. https://doi.org/10.3897/zookeys.1164.103184
  39. Telnov, D., Perkovsky, E.E., Kundrata, R., Kairišs, K., Vasilenko, D. V. & Bukejs, A. (2022) Revealing Palaeogene distribution of the Ptilodactylidae (Insecta: Coleoptera): the first Ptilodactyla Illiger, 1807 records from Rovno amber of Ukraine. Historical Biology, 35 (11), 2171–2180. https://doi.org/10.1080/08912963.2022.2136034
  40. Wedmann, S., T. Hörnschemeyer, T. & Schmied, H. (2011) Fossil water-penny beetles (Coleoptera: Psephenidae: Eubrianacinae) from the Eocene of Europe, with remarks on their phylogenetic position and biogeography. Palaeontology, 54 (5), 965–980. https://doi.org/10.1111/j.1475-4983.2011.01088.x