Argentine ant concrete walls, in spaces between boards and timbers, even among belongings in human dwellings. In natural areas, they generally nest shallowly in loose leaf litter or beneath small stones, due to their poor ability to dig deeper nests. However, if a deeper nesting ant species abandons their nest, Argentine ant colonies will readily take over the space. Austrian entomologist Gustav L. Mayr identified the first specimens of "Hypoclinea humilis" in the vicinity of Buenos Aires, Argentina in 1866. This species was shortly transferred to the genus "Iridomyrmex", and finally to "Linepithema" in the early 1990s. The native range of Argentine
Green-head ant myrmecophilous insects such as the beetle "Chlamydopsis longipes" are sometimes seen living inside colonies. Green-head ant males are produced irregularly throughout the year and are low-flying ants. Recorded nuptial flights begin between September to November at temperatures of 20–25 °C (68–77 °F), when a number of males begin to emerge from their nest. Sometimes, however, the males may return to their nest after briefly appearing outside. The green-head ant is a gamergate species, which means that males can successfully mate with the workers. These workers remain outside their nest with their head and thorax appressed and gaster elevated into the