Fossil Record 23(2): 197-204, doi: 10.5194/fr-23-197-2020
New genus of the tribe Ceutorhynchini (Coleoptera: Curculionidae) from the late Oligocene of Enspel, southwestern Germany, with a remark on the role of weevils in the ancient food web
expand article infoAndrei A Legalov, Markus J. Poschmann
‡ Generaldirektion Kulturelles Erbe RLP, Direktion Landesarchäologie/Erdgeschichte, Niederberger Höhe 1, 56077 Koblenz, Germany
Open Access
Abstract

The new weevil genus Igneonasus gen. nov. (type species: I. rudolphi sp. nov.) of the tribeCeutorhynchini (Curculionidae: Conoderinae: Ceutorhynchitae) is describedfrom the late Oligocene of Fossillagerstätte Enspel, Germany. The newgenus differs from the similar genus Stenocarus Thomson, 1859 in the anterior marginof the pronotum, which is not raised, a pronotum without tubercles on thesides, and a femur without teeth. This weevil is the largest representativeof this supertribe and the first fossil Curculionidae species described fromthe paleolake Enspel. In this ancient ecosystem, weevils were at least sometimesan important food resource for the cyprinid fish Palaeorutilus enspelensis.