The first species of Cantharis from Ukrainian Rovno amber (Coleoptera, Cantharidae).

Cantharis michaeli sp. nov. is described and illustrated from Upper Eocene Rovno amber from Ukraine. This is the first fossil Cantharis (soldier beetles, Cantharidae) from this deposit. The new species is compared with other fossil species of the genus Cantharis. It is similar to C. raeorum Fanti & M. G. Pankowski, 2020, but C. michaeli sp. nov. has a larger body, shorter antennae, and slight differences in both its antennae and pronotum. A review is provided of other soldier beetles found in Rovno amber, as well as a brief overview of the paleoenvironment where this amber formedan area that included extensive forests, large rivers, and warm temperatures.

Two new fossil species of soldier beetles (Coleoptera, Cantharidae, Malthininae) from Baltic amber.

Two new species of soldier beetles from the subfamily MalthininaeMalthinus masoni sp. nov. and Malthodes markpankowskii sp. nov.are described from Baltic amber. Their discovery is yet more evidence of the remarkable number of Cantharidae in Europe during the Eocene. This diversity is likely the result of several forces, including the warmer climate that characterized the epoch as well as the wide variety of habitats where Baltic amber formed.

A new species of Afrodiaphanes Geisthardt, 2007 (Coleoptera, Lampyridae), the first firefly described from the Central African Republic.

A new species of firefly, Afrodiaphanes pulcher sp. nov., is described, diagnosed and illustrated. This is the first species of Afrodiaphanes described from the Central African Republic as well as the first firefly described from this nation.

A new fossil Silis Charpentier, 1825 from Baltic amber (Cantharidae, Silinae, Silini).

A new fossil species of the family Cantharidae from Eocene Baltic amber, Silis (Silis) boninoi sp. nov., is described, diagnosed and illustrated. The new species is characterized by its extremely small body size along with a very wide and transverse pronotum with two short and quite robust lobes on each side. It is compared with other known taxa of the genus Silis from Baltic, Dominican and Mexican ambers.

Two new species of soldier beetles (Coleoptera, Cantharidae), the first from the tribe Silini in Dominican amber.

The Silinae is the most frequently observed subfamily of soldier beetles (Insecta, Coleoptera, Cantharidae) living today in Hispaniola (the Dominican Republic and Haiti). This subfamily also was recently found in Dominican amber with the discovery of the genus Tytthonyx (Silinae, Tytthonyxini). Here we describe and illustrate two new species of this subfamilythe first representatives of the tribe Silini and genus Silis in Dominican amber. Silis (s. str.) hegnai sp. nov. and Silis (s. str.) curleri sp. nov. are easily distinguishable from extinct species of Silis as well as those living in Hispaniola today.

Two new species of Cantharis Linnaeus, 1758 from Baltic amber.

Two new species of soldier beetles (Coleoptera, Cantharidae) from the Priabonian deposits in Yantarny, Russia (Baltic amber) are described. Cantharis crisantha sp. nov. is characterized by its relatively small body size, laterally rounded prothorax, and simple claws with a small basal tooth. Of particular interest, this specimen has its aedeagus extruded-a feature described for the first time in a representative of the genus Cantharis found in amber, and something rarely seen in all known fossil species of the Cantharidae family. The second described species, Cantharis raeorum sp. nov., is characterized by a pronotum with straight sides and a transverse and concave part near the posterior margin. The species are compared with earlier reported fossil Cantharis.

A new Eocene soldier beetle (Cantharidae) of the genus †Cacomorphocerus Schaufuss, 1892 from Baltic amber.

Recent studies of extinct soldier beetles have generated an immense amount of new information. Scientists have described various new species of †Cacomorphocerus Schaufuss, 1892, confirming the remarkable diversification and evolution of this genus and the Cantharidae family during the Eocene. In the present work, we describe a new species from Baltic amber. Cacomorphocerus marki sp. nov., is the first species of Cacomorphocerus discovered with filiform 11-segmented antennae. Based on inclusions in Baltic and Rovno amber, it now appears certain that the genus Cacomorphocerus and the tribe Cacomorphocerini Fanti Kupryjanowicz, 2018 evolved and subsequently went extinct in Europe during the Eocene. Known for more than 100 years from a single species, the genus is now known to be far more morphologically diversified thanks to these recent discoveries.

The first new genus of the tribe Hypulini Seidlitz (Coleoptera: Melandryidae) described from late Eocene Baltic amber.

A new extinct monotypic genus of the false darkling beetles, Madelinia gedanoposita gen. et sp. nov., is described and illustrated based on an inclusion in Baltic amber. The new taxon from a northern European Eocene forest is compared with the morphologically similar extant beetles as well as fossil melandryid beetles found in Baltic amber. The specimen establishes that the tribe Hypulini dates back to at least the Eocene and represents the first fossil genus of the group described. The composition of the tribe is discussed, and its present-day geographic distribution is mapped.