Monomorium fieldi is a small species of ant, originally described from Australia by Forel (1910), where it is widespread in all states (Heterick, 2001). According to Gunawardana (2005), it is also found in New Zealand, based on the following evidence: Don has determined that all material from New Zealand previously identified as Monomorium orientale is in fact M. antipodum recent material from Onehunga (New Zealand), tentatively determined as M.