Abstract
Abstract. Acritus sutirca sp. nov. is described and illustrated from Eocene Baltic amber on
the basis of one adult male specimen. As the first extinct member of the
subfamily Abraeinae (Histeridae) and the smallest known fossil histerid
specimen, this material was examined using a combination of light microscopy
and X-ray micro-computed tomography (µCT). Internal features of the
abdomen are well preserved, allowing us to study sclerotized parts of the
aedeagus and illustrate these structures in detail. The current finding
expands the range of known Histeridae diversity from the Eocene (48–34 Ma)
“amber forests” of Europe. The absolute size limits and the probable
average size for Baltic amber coleopteran inclusions are also briefly
discussed (urn:lsid:zoobank.org:pub:A2B17479-8628-47C7-A8D4-3E0789BF088B).
Funder
Shirshov Institute of Oceanology, Russian Academy of Sciences
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