Tropical Fire Ant vs Western Harvester Ant

Side-by-side species comparison

Attribute Tropical Fire Ant Western Harvester Ant
Scientific Name Solenopsis geminata Pogonomyrmex occidentalis
Order Hymenoptera Hymenoptera
Family Formicidae Formicidae
Size 2-6 mm 6-10 mm
Habitat Grasslands Grasslands
Diet Seed Feeders Herbivores
Regions Pantropical Western United States and southwestern Canada
Conservation Least Concern Least Concern

Tropical Fire Ant

A pantropical fire ant with large-headed major workers specialized for seed milling. It is one of the oldest known invasive ant species, spread globally through colonial trade routes.

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Did You Know?

It was likely transported around the world in soil ballast of Spanish galleons during the 16th century.

Western Harvester Ant

A large red ant that constructs conspicuous gravel-topped mound nests in western grasslands. It clears all vegetation from a wide circle around its nest entrance.

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Did You Know?

Its sting is one of the most painful among North American ants and has been rated highly on the Schmidt pain index.