Abstract

ABSTRACT Based on a single specimen in Eocene Baltic amber, Henoticus groehni sp. nov., the first extinct species of the genus, is described. The new species is studied and illustrated in detail using optical microphotography and X-ray micro-computed tomography. An additional congeneric specimen is discussed but not attributed to the species level. It is shown that exoskeletal depressions on the metaventrite with possible mycangia roles were present in Henoticus already in the Eocene. The possible involvement of the newly described species in dynamic of ecosystems at the early stages of natural pyrogenic succession in Eocene amber forests is hypothesised.

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