Redescription of the Upper Jurassic Aeshna antiqua Vander Linden, 1827 in the Anisopteran family Protolindeniidae (odonata)

The holotype of the Upper Jurassic species ‘Aeshna’ antiqua Vander Linden, 1827, from the lithographic limestone of Bavaria (Solnhofen Konservat-Lagerstätte), is redescribed. It turns out that it is conspecific with Protolindenia wittei (Giebel, 1860), the type species of the genus Protolindenia Deichmüller, 1886. We therefore transfer ‘Aeshna’ antiqua to the genus Protolindenia under the name Protolindenia antiqua (Vander Linden, 1827) comb. nov., and Protolindenia wittei is considered as a junior synonym of P. antiqua (Vander Linden, 1827).