New species and characters of Eucnemidae (Coleoptera, Elateroidea) from Myanmar amber

Four new species of Eucnemidae are described from Cretaceous Myanmar amber: Myall ovata sp. nov., Fiegelia gracilis sp. nov., Fiegelia serraticornis sp. nov. and Fiegelia longicornis sp. nov. Based on new specimens, the diagnosis of the genus Fiegelia Muona, 2020 is revised, Cenomana annieae Hsiao & Otto, 2024 and Fiegelia tarsalis Muona, 2020 are revised. More species of derived Eucnemidae with two protibial apical spurs are discovered, indicating that the single protibial apical spur in different derived Eucnemidae lineages is a result of multiple losses of the other spur.