A potentially diverse fauna of springtail-hunting scydmaenines during the late Mesozoic (Coleoptera, Staphylinidae, Scydmaeninae)

The extinct ant-like stone beetle genus Cascomastigus Yin & Cai was recently established to accommodate C. monstrabilis Yin & Cai from the mid-Cretaceous Burmese amber. This species developed a highly specialized antennal ‘setal trap’, and was hypothesized to enroll these into predation on fast-moving preys, particularly springtails. However, only a single species of Cascomastigus has been known so far, and the paleodiversity of this peculiar...