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 subfamily—the 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 soldier beetles from the subfamily Malthininae—Malthinus 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.

We describe and illustrate six new species of the family Cantharidae from Baltic amber: Sucinorhagonycha maryae sp. nov. (Cantharinae, Cacomorphocerini), Podistra madelineae sp. nov. (Cantharinae, Cantharini), Malthinus (Malthinus) karenpankowskiae sp. nov. (Malthininae, Malthinini), Malthinus (Malthinus) pauljohnsoni sp. nov. (Malthininae, Malthinini), Malthodes (Libertimalthodes) betseyae sp. nov. (Malthininae, Malthodini) and Malthodes (Malthodes) greenwalti sp. nov. (Malthininae, Malthodini). These new taxa add to the astonishing palaeodiversity documented in Baltic amber, demonstrating the wide range of organisms thriving in European forests and wooded areas during the Eocene. Extant species of Malthodes, Malthinus and Podistra also provide important clues to how these extinct taxa lived, fed and reproduced some 35–40 million years ago.

New parasitoid wasps of the family Braconidae are documented from Eocene Baltic and Rovno ambers. A new fossil genus belonging to the braconid subfamily Exothecinae, Palaeocolastes n. gen., with its type species P. bruesi n. sp., is described and illustrated from Baltic amber. This represents the first reliable fossil record for a member of Exothecinae. Two additional new species from Baltic amber are also described: Ascogaster (Syntaphus) latitibialis n. sp. (Cheloninae) and Meteorus arasnitsyni n. sp. (Euphorinae). Another fossil species, Microtypus eocenus n. sp. (Microtypinae), is described from coeval Rovno amber (Ukraine), representing the first braconid species described from this deposit. A new record of a female of Diospilites brevicornis Brues, 1933 (Diospilitinae) from Baltic amber, together with variation of some diagnostic features of the species and redescription of its subfamily and genus, are also provided. UUID: http://zoobank.org/656cb1a3-b9cf-4696-ae24-0d4df9545101.

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.