Tachyporus nitidulus (Fabricius, 1781)

Majka, Christopher & Klimaszewski, Jan, 2008, Adventive Staphylinidae (Coleoptera) of the Maritime Provinces of Canada: further contributions, ZooKeys 2 (2), pp. 151-174 : 154

Tachyporus nitidulus (Fabricius, 1781)

Tachyporus nitidulus has been considered an adventive species (i.e., Majka and Klimaszewski 2008). According to Campbell (1979), T. nitidulus may represent a species complex of two or more species. He suggested that one species or population (lighter in colour with a shorter elytra having less distinct microsculpture, non-functional wings, and submedian bristles on the fifth and sixth abdominal tergites) may represent an indigenous North American one, whereas another (darker in colour, with a longer elytra with distinct microsculpture, fully developed wings, and lacking submedian bristles on the fifth and sixth abdominal tergites) may represent an adventive Palaearctic one. Th e ranges of these two forms broadly overlap and there are also occasional specimens with mixed features. Volker Assing (pers. comm.), however, indicates that both forms are found in Europe. Th us, although the status of T. nitidulus requires further research, we retain it as a Palaearctic species.