Revisiting the morphology and systematic placement of the enigmatic Cretaceous ommatid beetle Bukhkalius lindae (Coleoptera: Archostemata: Ommatidae)

Authors

  • Yan-Da Li Chinese Academy of Sciences, Nanjing Institute of Geology and Palaeontology, Center for Excellence in Life and Paleoenvironment, State Key Laboratory of Palaeobiology and Stratigraphy. Nanjing, Jiangsu, China; Peking University (PKU), School of Life Sciences Author http://orcid.org/0000-0002-9439-202X
  • Di-Ying Huang Chinese Academy of Sciences, Nanjing Institute of Geology and Palaeontology, Center for Excellence in Life and Paleoenvironment, State Key Laboratory of Palaeobiology and Stratigraphy Author http://orcid.org/0000-0002-5637-4867
  • Chen-Yang Cai Chinese Academy of Sciences, Nanjing Institute of Geology and Palaeontology, Center for Excellence in Life and Paleoenvironment, State Key Laboratory of Palaeobiology and Stratigraphy. Nanjing, Jiangsu, China; University of Bristol, School of Earth Sciences Author http://orcid.org/0000-0002-9283-8323

DOI:

https://doi.org/10.11606/1807-0205/2021.61.28

Keywords:

Archostemata, Ommatidae, Bukhkalius, Tetraphalerus, Burmese amber

Abstract

The systematic position of Bukhkalius lindae (Jarzembowski et al. 2017) from mid-Cretaceous Burmese amber is revised based on a re-examination of the type specimen. Our observation confirms that B. lindae lacks unique apomorphies of Tetraphalerus Waterhouse, in which it was originally placed, including complete antennal grooves and mushroom-shaped micro-tubercles. It is well justified to place it into a separate genus, i.e., Bukhkalius Kirejtshuk & Jarzembowski, 2020. The incomplete but distinct antennal grooves and the Tetraphalerus-like mouthparts of B. lindae suggest that it has a close affinity to Tetraphalerus. Therefore, B. lindae may represent a missing link bridging the morphological gap between extant ommatid subfamilies Tetraphalerinae and Ommatinae.

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References

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Published

2021-02-18

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Original Article

How to Cite

Li, Y.-D., Huang, D.-Y., & Cai, C.-Y. (2021). Revisiting the morphology and systematic placement of the enigmatic Cretaceous ommatid beetle Bukhkalius lindae (Coleoptera: Archostemata: Ommatidae). Papéis Avulsos De Zoologia, 61, e20216128. https://doi.org/10.11606/1807-0205/2021.61.28