Ant key 8

Small (1.5-2mm), yellow colour, cryptic species (nest underground), not aggressive, no strong morphological differences between minor and major workers, established in Auckland in approximately 2001.	Solenopsis sp
Larger (2-6mm), reddish colour, construct large dirt mounds (nests) above ground, strong morphological differences between minor and major workers, not established in New Zealand.	Solenopsis invicta red imported fire ant)

Solenopsis sp profile.