New genus and species of Lamprosomatinae (Coleoptera: Chrysomelidae) from Eocene Baltic amber

Abstract

Fossil records of Lamprosomatinae (Coleoptera: Chrysomelidae) are scarce. Till now only three findings of this subfamily were reported and all originated from Eocene Baltic amber. Based on well-preserved specimen, Damzenius anitae gen. et sp. nov. is described and illustrated from this Lagerstätte. A key to the known extinct species of Lamprosomatinae is provided. Assumed minimum age of Lamprosomatinae is dated as mid-Eocene to Upper Eocene (47.8-33.9 Ma). The diverse fossil Lamprosomatinae representatives provide strong evidence for the presence of thermophilic, humid and mixed forest, and indicative of warm temperate, humid, equable climate with reduced thermal seasonality in the Eocene Europe.

First record of the subfamily Sagrinae (Coleoptera: Chrysomelidae) from the Eocene of North America

“…The first record of Bruchinae was from the mid-Cretaceous Burmese amber (Legalov et al, 2020), Galerucinae from the Santonian Taimyr amber (Nadein and Perkovsky, 2018), Donaciinae from the Danian of Russia (Bieńkowski, 2015) and the late Palaeocene of Canada (Askevold, 1990), Sagrinae and Cryptocephalinae from the middle Paleocene of France (Piton, 1940;Legalov et al, 2019), Eumolpinae from the early Eocene Oise amber (Moseyko et al, 2010), Cassidinae from the early-middle Eocene of the USA (Chaboo and Engel, 2009), and Criocerinae from the late Eocene Baltic amber (Bukejs and Schmitt, 2016). The Lamprosomatinae were described from Baltic amber (Bukejs and Nadein, 2015;Bukejs, 2019). The Spilopyrinae and Synetinae are absent from the fossil history.…”