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Ommatidae

The Ommatidae are a family of beetles in the suborder Archostemata. The Ommatidae are considered the extant beetle family that has most ancestral characteristics. There are only seven extant species, confined to Australia and South America. However, the geographical distribution was much wider during the Mesozoic spanning across Eurasia and Australia, suggesting that they were widespread on Pangea. So far, over 26 extinct genera containing over 170 species of these beetles have been described. Three extant genera have been assigned to this family: Omma, Tetraphalerus and Beutelius. The family is considered to be a subfamily of Cupedidae by some authors, but have been found to be more closely related to Micromalthidae in molecular phylogenies. A close relationship with Micromalthidae is supported by several morphological characters, including those of the mandibles and male genitalia. Due to their rarity, their ecology is obscure, it is likely that their larvae feed on deadwood.

Genera

According to Kirejtshuk, 2020 and subsequent literature.

Extinct genera

  • †Allophalerus <small>Kirejtshuk, 2020</small> – Early Jurassic-Late Cretaceous (Asia)
  • †Asiania <small>Lee et al., 2023</small> – Early Cretaceous (South Korea)
  • †Blapsium <small>Westwood, 1854</small> – Middle Jurassic (England)
  • †Brochocoleus <small>Hong, 1982</small> – Early Jurassic-Late Cretaceous (Eurasia)
  • †Bukhkalius <small>Kirejtshuk and Jarzembowski, 2020</small> – Burmese amber, Myanmar, mid-Cretaceous (Albian-Cenomanian)
  • †Burmocoleus <small>Kirejtshuk, 2020</small> – Burmese amber, Myanmar, mid-Cretaceous (Albian-Cenomanian)
  • †Cionocoleus <small>Ren, 1995</small> – Middle Jurassic-Early Cretaceous (Eurasia)
  • †Cionocups <small>Kirejtshuk, 2020</small> – Burmese amber, Myanmar, mid-Cretaceous (Albian-Cenomanian)
  • †Clessidromma <small>Jarzembowski et al., 2017</small> – Burmese amber, Myanmar, mid-Cretaceous (Albian-Cenomanian)
  • †Diluticupes <small>Ren, 1995</small> – Middle Jurassic-Early Cretaceous (Eurasia)
  • †Echinocups <small>Kirejtshuk and Jarzembowski, 2020</small> – Burmese amber, Myanmar, mid-Cretaceous (Albian-Cenomanian) (other authors consider this genus a junior synonym of Notocupes)
  • †?Eurydictyon <small>Ponomarenko, 1969</small> – Early Jurassic (Kyrgyzstan) (possibly closely related to Notocupes)
  • †Jarzembowskiops <small>Kirejtshuk, 2020</small> – Burmese amber, Myanmar, mid-Cretaceous (Albian-Cenomanian)
  • †Kirejtomma <small>Li and Cai, 2021</small> – Burmese amber, Myanmar, mid-Cretaceous (Albian-Cenomanian)
  • †Lepidomma <small>Jarzembowski et al., 2019</small> – Burmese amber, Myanmar, mid-Cretaceous (Albian-Cenomanian)
  • †Liassocupes <small>Zeuner, 1962</small> – Early Jurassic (England)
  • †Limnomma <small>Li and Cai in Li et al., 2021</small> – Middle Jurassic (China)
  • †Lithocupes <small>Ponomarenko, 1966</small> – Late Triassic (Kyrgyzstan)
  • †Miniomma <small>Li, Yamamoto and Cai, 2020</small> – Burmese amber, Myanmar, mid-Cretaceous (Albian-Cenomanian)
  • †Monticupes <small>Ren, 1995</small> – Middle Jurassic-Early Cretaceous (China)
  • †?Notocupes <small>Ponomarenko, 1964</small> – Middle Triassic-Late Cretaceous (Eurasia) (other authors have considered this genus more closely related to Cupedidae)
  • †?Notocupoides <small>Ponomarenko, 1966</small> – Late Triassic (Kyrgyzstan) (possibly closely related to Notocupes)
  • †Odontomma <small>Ren et al., 2006</small> – Early Cretaceous (China)
  • †Paraodontomma <small>Yamamoto, 2017</small> – Burmese amber, Myanmar, mid-Cretaceous (Albian-Cenomanian)
  • †Pareuryomma <small>Tan et al., 2012</small> – Early Cretaceous (China)
  • †Polyakius <small>Kirejtshuk, 2020</small> – Burmese amber, Myanmar, mid-Cretaceous (Albian-Cenomanian)
  • †?Rhabdocupes <small>Ponomarenko, 1966</small> – Late Triassic (Kyrgyzstan) (possibly closely related to Notocupes)
  • †Rhopalomma <small>Ashman et al., 2015</small> – Late Jurassic (Australia)
  • †Stegocoleus <small>Jarzembowski and Wang, 2016</small> – Burmese amber, Myanmar, mid-Cretaceous (Albian-Cenomanian)
  • †Tetraphalerites <small>Crowson, 1962</small> – Eocene (England)
  • †Zygadenia <small>Handlirsch, 1906</small> – Early Jurassic-Early Cretaceous (Eurasia, ?Australia) (probably closely related to Notocupes)

Extant genera

  • Omma <small>Newman, 1839</small> – Late Triassic-Late Cretaceous (Eurasia), recent (Australia)
  • Tetraphalerus <small>Waterhouse, 1901</small> – Middle Jurassic-Early Cretaceous (Asia) recent (South America)
  • Beutelius <small>Escalona et al., 2020</small> – Recent (Australia)

The extinct genus Fuscicupes <small>Hong and Wang 1990</small> was included in the family by some authors, but was excluded by Kirejtshuk (2020).

Gallery

References

External links