The genus Fusicornia Risbec is a widespread group in the Old World, widely distributed from West Africa to Vanuatu. All scelionids are egg parasitoids of arthropods, but the host of Fusicornia is not yet known. The species concepts are reviewed and revised: the genus comprises fourteen species of which ten are new to science. The phylogenetically important features of Fusicornia and its relationship with other Scelionidae are discussed. This work is part of the Platygastroidea Planetary Biodiversity Initiative, and the collaborative taxonomic methods developed for this international project are outlined.