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) |
