Fossil Record
Fossil Record
Fossil Record
Articles | Volume 23, issue 1
Articles | Volume 23, issue 1
https://doi.org/10.5194/fr-23-105-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/fr-23-105-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 1
Research article
 | 
11 Jun 2020
Research article |  | 11 Jun 2020

Description of the male of fossil Calomicrus eocenicus Bukejs et Bezděk (Coleoptera: Chrysomelidae: Galerucinae) from Eocene Baltic amber using X-ray microtomography

Andris Bukejs, Jan Bezděk, Vitalii I. Alekseev, Kristaps Kairišs, and Ryan C. McKellar

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Short summary
A male of the extinct leaf-beetle species Calomicrus eocenicus embedded in Baltic amber is found and compared with an earlier known female. The beetle genitalia are illustrated in detail using X-ray microtomography. The male is smaller than female and has a modified last abdominal segment. The extinct species (about 40 million years old) possesses typical sexual characters which are similar to the characters of extant beetles within the group.
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