Tetramorium immigrans Santschi, 1927 (Hymenoptera: Formicidae) nowy gatunek potencjalnie inwazyjnej mrówki w Polsce

Occurrence of Tetramorium immigrans Santschi, 1927 in Poland is discussed. This potentially invasive ant is known only from urban area of Wrocław city (SW Poland, Lower Silesia) where is very common in anthropogenic, denuded of plants areas, like pavements, concrete car parks or dried artificial hills with rare vegetation and pebbly ground. Localities in Wrocław are northernmost in Europe for this species.