Zygadenia is an extinct genus of archostematan beetles from the Jurassic to Cretaceous. It is considered to be a senior synonym of Notocupes by Kirejtshuk (2020),[1] but other researchers suggest to reserve the genus Zygadenia as a form taxon for isolated elytra that probably belong to the genus Notocupes, while retaining Notocupes as a valid genus for complete body fossils.[2][3][4]

Zygadenia
Temporal range: Toarcian–Aptian
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Suborder: Archostemata
Family: incertae sedis
Genus: Zygadenia
Handlirsch, 1906
Synonyms

Kakoselia Handlirsch, 1906

Eleven species are included in the genus, after Strelnikova and Yan (2021, 2023).[2][3] Kirejtshuk (2020) notes that the two Lower Jurassic Australian species Z. westraliensis and Z. martinae possibly merit placement in their own separate genus.[1]

Jurassic species edit

Toarcian (182.7 Ma to 174.1 Ma) edit

Cattamarra Coal Measures, Australia
  • Z. martinae Jarzembowski et al. 2015
  • Z. westraliensis Riek 1968

Tithonian (152.1 Ma To 145.0 Ma) edit

Shar Teeg, Mongolia
  • Z. giebeli Ponomarenko 2014
  • Z. handlirschi Ponomarenko 2014

Cretaceous species edit

Berriasian (145.0 Ma To 139.8 Ma) edit

Lulworth Formation, United Kingdom
  • Z. angliae (Giebel 1856)
  • Z. tuberculata (Giebel, 1856)

Hauterivian (132.9 Ma to 129.4 Ma) edit

Weald Clay, United Kingdom
  • Z. angliae (Giebel 1856)
  • Z. floodpagei Jarzembowski et al. 2015
  • Z. simpsoni Jarzembowski et al. 2015

Barremian (129.4 Ma to 125.0 Ma) edit

Sinuiju Formation, North Korea
  • Z. liui Jarzembowski et al. 2015
Weald Clay, United Kingdom
  • Z. angliae (Giebel 1856)
  • Z. floodpagei Jarzembowski et al. 2015
  • Z. tuberculata (Giebel 1856)
  • Z. simpsoni Jarzembowski et al. 2015

Aptian (125.0 to ~113.0 Ma) edit

Argun Formation, Russia
  • Z. sinitzae Ponomarenko, 2000
Sinuiju Formation, North Korea
  • Z. liui Jarzembowski et al. 2015
Yixian Formation, China
  • Z. liui Jarzembowski et al. 2015
Zaza Formation, Buryatia, Russia
  • Z. alexrasnitsyni Strelnikova & Yan, 2021

References edit

  1. ^ a b Kirejtshuk, Alexander G. (2020). "Taxonomic Review of Fossil Coleopterous Families (Insecta, Coleoptera). Suborder Archostemata: Superfamilies Coleopseoidea and Cupedoidea". Geosciences. 10 (2): 73. Bibcode:2020Geosc..10...73K. doi:10.3390/geosciences10020073. ISSN 2076-3263.
  2. ^ a b Strelnikova, O.D.; Yan, E.V. (2021). "Redescriptions of beetles of the Notocupes generic complex (Coleoptera: Archostemata: Ommatidae) from the Lower Cretaceous of Buryatia". Palaeoentomology. 4 (5): 499–514. doi:10.11646/palaeoentomology.4.5.15. S2CID 240527664.
  3. ^ a b Strelnikova, O.D.; Yan, E.V. (2023). "Redescriptions of the Triassic Notocupes beetles (Archostemata: Ommatidae) from Kyrgyzstan and South Kazakhstan". Palaeoentomology. 6 (2): 174–190. doi:10.11646/palaeoentomology.6.2.9. S2CID 258403180.
  4. ^ Soo Bin Lee; Gi Soo Nam; Yan-Da Li (2022). "A new species of Notocupes (Coleoptera: Archostemata) from the Lower Cretaceous (Albian) Jinju Formation in South Korea". Cretaceous Research. 140: 105357. Bibcode:2022CrRes.14005357L. doi:10.1016/j.cretres.2022.105357. S2CID 252147645.