Oil Beetle vs Legionary Ant

Side-by-side species comparison

Attribute Oil Beetle Legionary Ant
Scientific Name Meloe proscarabaeus Neivamyrmex nigrescens
Order Coleoptera Hymenoptera
Family Meloidae Formicidae
Size 15-35 mm 2-5 mm
Habitat Beaches & Coastal Deserts & Drylands
Diet Omnivores Omnivores
Regions Europe Southwestern United States, Mexico
Conservation Near Threatened Least Concern

Oil Beetle

A large, flightless beetle with shortened elytra and a swollen abdomen. It secretes an oily, blistering compound called cantharidin when threatened.

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Did You Know?

Females can lay over 1,000 eggs, but larvae must hitch a ride on a solitary bee to survive.

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.

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Did You Know?

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