Prolasius advenus
Prolasius advenus is a species of ant in the genus Prolasius. It is endemic to New Zealand, widespread across the North and South Islands, including offshore islands. It is a relatively small ant, with workers 2.9-3.5mm in length. Its common name is small brown bush ant. Biology 
Colonies can include hundreds of workers and multiple queens. Prolasius advenus is found in a variety of forest habitats. It is a generalist forager, preying upon and scavenging small arthropods, as well as tending mealy-bugs and scale insects for honeydew. References

External links

 AntWiki lists the species under the synonym Prolasius advena
 Lessons from Little Creatures: article on New Zealand ants from NZ National Geographic. Formicinae
Ants of New Zealand
Insects described in 1862
Taxa named by Frederick Smith (entomologist)
Endemic insects of New Zealand