English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Balticeler   kerneggeri    gen. nov. ,  sp. nov. , is described based on six fossil specimens preserved in Eocene Baltic amber and imaged using light microscopy and X-ray micro-computed tomography. Based on certain characters observed in the fossil species it is considered a “middle grade”   Carabidae  , outside of the large family   Harpalinae   (as it possesses a scrobal seta, the lack of which is a synapomorphy of that subfamily), but possessing four synapomorphies that indicate    Balticeler    belongs to a large clade of carabids including   Harpalinae   (anisochaetous Grade B antennal cleaner, conjunct mesocoxae, closed procoxal cavities, and a well-developed external lobe of the metepimeron). This remarkable beetle has several striking features, including lack of externally-visible sexually dimorphic characters, lack of lateral borders on the pronotum, and very long and thin mandibles and maxillae. In combination, these states are unique within   Carabidae  . We consider the presence of a dorsally completely open aedeagal median lobe as a synapomorphy of the fossil species with the subfamily   Trechinae  , a pubescent and relatively long second antennomere and a 4+2+2 pattern of umbilicate setae as synapomorphies of the supertribe   Trechitae  , and a quadrisetose clypeus as a synapomorphy with the   Trechitae   clade  Bembidarenini  +   Trechini   sensu  Maddison et al. (2019) . As it lacks a synapomorphy of  Bembidarenini  +   Trechini  , we propose that it is a member of the stem group of that clade.

deutsche entomologische zeitschrift

Balticeler   kerneggeri    gen. nov., sp. nov., an enigmatic Baltic amber fossil of the ground beetle subfamily   Trechinae   (  Coleoptera  ,   Carabidae  )