Notes on Longitarsus aphthonoides Weise 1887 and on the species groups of L. lateripunctatus (Rosenhauer 1856) and L. curtus (Allard 1860) (Coleoptera, Chrysomelidae)

The aim of this study is to deepen the knowledge of five poorly studied Longitarsus species in order to elucidate their taxonomic position within the genus. For each of them further diagnostic characters and many new collecting localities are supplied. One new synonymy and one change of status are proposed: L. callidus Warchalowski 1967 = L. aphthonoides Weise 1887 syn. nov., and L. lateripunctatus personatus Weise 1893 is raised to valid species. The morphologically similar L. curtus (Allard 1860) and L. monticola Kutschera 1863 are also examined, providing new male and female diagnostic characters for their identification, as well as several European and Italian new collecting localities.