Banded sugar ant 20 cm (8 in) in diameter and usually funnel-shaped and ephemeral. Mounds are not constructed in undisturbed regions where land degradation has not occurred. Instead, the entrance of a nest consists of a smooth-walled vertical shaft that is in diameter. Chambers in the nest have a similar appearance to the nest entrance (shaft-like walls), and the floors within the chambers are typically in length with an arched roof that is in height. Excavated meat ant nests show that banded sugar ants will also inhabit them. Banded sugar ants are the dominant group of nocturnal ants in their range. Workers are
Erratic ant nest structure to concentrate solar heat onto the ants' brood. Nuptial flights take place in June, although they may be postponed during colder years to July. Erratic ant The erratic ant ("Tapinoma erraticum") is a species of dolichoderine ant first described in 1789 by Latreille. This species ranges throughout Central Europe from the mountains of south Italy to north Germany. It is present in coastal areas of Southern England and on the islands of Gotland and Öland in Sweden. A thermophilic species, "T. erraticum" is found principally on dry heathland, exposed to the sun. The workers are very agile, and