My recent studies on the genus Pison have revealed a previously unnoticed synonymy that is discussed below.Alyson ater Spinola, 1808:253, sex not indicated. Lectotype: ♂, Italy: Liguria: Marassi near Genova (Torino), designated by de Beaumont, 1952:42. -As Pison ater (correctly: atrum): Shuckard, 1838:75 (new combination).Pison jurinei Spinola, 1808:256, sex not indicated (as Jurini, incorrect original capitalization and termination). Lectotype:♂, Italy: Liguria: no specific locality (Torino), designated by de Beaumont, 1952:42. Synonymized with Pison atrum by Shuckard, 1838:75, synonymy confirmed by de Beaumont, 1952:42 (as new synonym).
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