Paleoselatosomus cretaceus gen. et sp. nov. (Coleoptera: Elateridae): the first known representative of Dendrometrinae from the Upper Cretaceous Burmese amber

Elateridae Leach, 1815 (click-beetles) are the most speciesrich beetle family in Elateroidea, including approximately 11,000 described species from all major zoogeographical regions.The classification of this group is in a state of flux and its monophyly and limits remain contentious (e.g.Douglas et al. 2021).The origin of Elateridae remains uncertain; however, they were abundant already in the Jurassic period (for a review, see Kundrata et al. 2021a).The fossil record of Elateridae includes over 250 species classified in more than 100 genera.However, only less than 30 species were described from the Cretaceous period, most of them being compression fossils (Kundrata et al. 2021a).Recently, there is an increasing number of studies dealing with fossils from Cretaceous ambers.For example, in 2022, the first click-beetle was described from the socalled ajkaite, which is amber of the Upper Cretaceous Ajka Coal Formation in Hungary (Szab et al. 2022).Most popular is the mid-Cretaceous amber of northern Myanmar (Burmese amber), which, during the past years, has become one of the most important sources of fossil insects (e.g.Ross 2019Ross , 2020Ross , 2021Ross , 2022Ross , 2023Ross , 2024a, b), b).Although Elateridae are comparatively abundant in Burmese amber, only eight species have been described from there to date (Tab.1).Cockerell (1917) described Elater bur mitinus Cockerell, 1917 and "Acmaeodera" burmitina Cockerell, 1917 (originally in Buprestidae Leach, 1815); they both need further examination as their proper systematic placements are unclear.Otto ( 2019) described an enig matic Cretopityobius pankowskiorum Otto, 2019 with fancy bipectinate antennae and classified it in Pityobiinae.Agrypninae Candze, 1857 are represented by Cretopa chyderes burmitinus Kundrata et al., 2021b with extremely elongate posterior angles of pronotum, which can be found in extant genus Pachyderes Gurin-Mneville, 1829 (currently in the tribe Oophorini Gistel, 1848; Kundrata et al. 2021b).Elaterinae Leach, 1815 are the most abundant click-beetles in Burmese amber, with two recently des cribed species (i.e.