Lasius alienus is a common woodland ant in eastern North America.

Urbana, Illinois, USA
Lasius alienus workers tend to young larvae in the nest. 

Urbana, Illinois, USA
Lasius alienus is a common woodland ant in eastern North America. Note the small springtail in the foreground that apparently doesn't mind the ant's company.

Urbana, Illinois, USA
This Lasius alienus worker hosts an Oplitis mite on her mid-leg. Mites are ubiquitous inhabitants of ant nests, although their biology and relationships to the ants is poorly understood.
Lasius alienus

Urbana, Illinois, USA
When a photographer disturbs their nest, these Lasius alienus workers drag the larvae to safety.

Urbana, Illinois, USA
Lasius alienus

Urbana, Illinois, USA
Lasius alienus

Urbana, Illinois, USA
Lasius alienus

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