Linepithema humile

The Argentine ant (Linepithema humile, formerly Iridomyrmex humilis) is native to northern Argentina, Uruguay, Paraguay, and southern Brazil. It is an invasive species that has been inadvertently introduced by humans in many mediterranean climate areas, including Portugal, Spain, Italy, South Africa, New Zealand, Japan, Easter Island, Australia, Hawaii, and the United States.

■Taxonomy: Dolichoderinae
■Color: dark brown
■Queen: 6 to 12 millimetres
■Worker size: 3 millimetres
■Characteristics: polygyne