title: What is Tetramoriumsemilaeve André, 1883? (Hymenoptera, Formicidae).
abstract: Tetramoriumsemilaeve André, 1883 is redescribed based on the type series and new material from terra typica (Pyrénées-Orientales). Lectotype worker is designated. Detailed descriptions of gyne and male are given. A review of material from the Mediterranean area suggests that in the past the name Tetramoriumsemilaeve has been applied to more than one species and the true Tetramoriumsemilaeve is common only in the western part of the Mediterranean basin. The structure of the male genitalia is the most reliable set of characters allowing a proper distinction of species in Tetramoriumsemilaeve species group. All names attributed to the former name "semilaeve" are discussed.
authors.affiliation: Department of Biodiversity and Evolutionary Taxonomy, University of Wrocław, Przybyszewskiego, 63/77, 51-148 Wrocław, Poland.
authors.forename: Lech
authors.initials: L
authors.lastname: Borowiec
authors.affiliation: Route de Mounic, 33160 Saint-Aubin-de-Médoc, France.
authors.forename: Christophe
authors.initials: C
authors.lastname: Galkowski
authors.affiliation: Department of Biodiversity and Evolutionary Taxonomy, University of Wrocław, Przybyszewskiego, 63/77, 51-148 Wrocław, Poland.
authors.forename: Sebastian
authors.initials: S
authors.lastname: Salata
keywords: Crematogastrini; Mediterranean Subregion; Tetramoriumsemilaeve; taxonomy