The purpose of this application, under Article 81.1 of the Code, is to conserve the genus-group names Liancalus Loew, 1857 and Scellus Loew, 1857 (Diptera, dolichopodidae), widely distributed and well-established genera of dolichopodid flies whose names have been used consistently for more than one-and-ahalf centuries. They are threatened by a change in the type species of Anoplomerus Rondani, 1856, made in a largely-overlooked unpaginated corrigendum on the last page of Rondani (1856). Liancalus Loew, 1857 is a replacement name for the homonym Anoplomerus and automatically takes its type species. It is proposed that Liancalus Loew, 1857 and Scellus Loew, 1857 be conserved by designating Dolichopus regius Fabricius, 1805 as type species for Anoplomerus Rondani, 1856 under the Commission's plenary power. This solution will protect both names and serve to promote nomenclatural stability.