Legionary Ant vs Lesser Leaf-Cutter Ant

Side-by-side species comparison

Attribute Legionary Ant Lesser Leaf-Cutter Ant
Scientific Name Neivamyrmex nigrescens Acromyrmex octospinosus
Order Hymenoptera Hymenoptera
Family Formicidae Formicidae
Size 2-5 mm 2-10 mm
Habitat Deserts & Drylands Farmland
Diet Omnivores Fungus Feeders
Regions Southwestern United States, Mexico Central America, Caribbean, northern South America, Brazil
Conservation Least Concern Least Concern

Legionary Ant

The most common army ant species in the United States, conducting nocturnal column raids on other ant nests. Workers are small and reddish-brown with reduced eyes.

💡

Did You Know?

They are rarely seen because they raid almost exclusively at night and spend most of their time underground.

Lesser Leaf-Cutter Ant

A smaller leaf-cutter ant species covered in spiny tubercles on its body. It forms more modest colonies than Atta but is equally dependent on fungal agriculture.

💡

Did You Know?

Workers produce antibiotic compounds from bacteria on their bodies to protect their fungal gardens from parasitic molds.