Abstract
Abstract Two new genera and eight new species of featherwing beetles (Coleoptera: Ptiliidae) possessing a remarkable horizontal perforation of the mesoventral keel are described: Skidmorella vietnamensissp.n. (Vietnam), S. memorabilissp.n. (Indonesia), S. serratasp.n. (Vietnam), Fenestellidium capensisgen. et sp.n. (South Africa, type species), F. kakamegaensissp.n. (Kenya), Cissidium okuensissp.n. (Cameroon), Dacrysoma usambarensisgen. et sp.n. (Tanzania, type species) and D. felissp.n. (Madagascar). A phylogenetic analysis of 24 taxa and 37 parsimony‐informative characters supports the hypothesis of a single origin of the mesoventral perforation, thus uniting Discheramocephalus, Skidmorella, Africoptilium, Fenestellidium, Cissidium and Dacrysoma into a pantropically distributed clade, for which a new tribe Discheramocephalini (type genus Discheramocephalus) is proposed. Identification keys to Discheramocephalini genera and, in some cases, to species are provided. Each new species is illustrated with scanning electron microscopy images.
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