Queen and worker Temnothorax curvispinosus, a young nest inside a plant stem.

Urbana, Illinois, USA
Forelius pruinosus workers warm themselves on a cool spring morning under a sun-exposed stone. Note the color variation among workers; color is not always a reliable identification character in ants.

Konza Prairie, Kansas, USA
Forelius pruinosus workers warm themselves on a cool spring morning under a sun-exposed stone.

Konza Prairie, Kansas, USA
A colony of thief ants (Solenopsis carolinensis) nesting in rotting pine bark buried in the soil of a longleaf pine savanna. The large individual is a queen.

Gaineseville, Florida, USA
Lasius neoniger nests are often marked by a pile of excavated soil.

Gainesville, Florida, USA
Retired USDA myrmecologist Lloyd Davis surveys a large Solenopsis invicta red imported fire ant mound at Paynes Prairie State Park. 

Gainesville, Florida, USA
A colony of thief ants (Solenopsis carolinensis) nesting in rotting pine bark buried in the soil of a longleaf pine savanna. The large individual is a queen.

Gaineseville, Florida, USA
Lasius neoniger nests are often marked by a pile of excavated soil.

Gainesville, Florida, USA
A fisheye view of a Lasius neoniger nest showing the characteristic circular pile of excavated soil.

Gainesville, Florida, USA
Queen and worker Temnothorax curvispinosus, a young nest inside a plant stem.

Urbana, Illinois, USA
Queen and worker Temnothorax curvispinosus, a young nest inside a plant stem.

Urbana, Illinois, USA
Queen and worker Temnothorax curvispinosus, a young nest inside a plant stem.

Urbana, Illinois, USA
See photo in original gallery.
all images and text © Alex Wild 2001-2013