Lasius (Acanthomyops) claviger citronella ants.  The different colors of the workers reflect their age.  Ants are pale in color when they first eclose from the pupal stage but darken over time.

Vermillion River Observatory, Illinois, USA
Lasius (Acanthomyops) claviger citronella ants.  The different colors of the workers reflect their age.  Ants are pale in color when they first eclose from the pupal stage but darken over time.

Vermillion River Observatory, Illinois, USA
A very young worker ant.  Ants begin their adult life as soft, pale creatures.  Their integument hardens and strengthens over time. Linepithema oblongum.

Carapunco, Tucumán, Argentina
Formica pallidefulva.  This young ant has just eclosed from a pupa and her integument is still pale and soft.   She will darken over time.

Champaign, Illinois, USA
A very young worker ant.  Ants begin their adult life as soft, pale creatures.  Their integument hardens and strengthens over time. Linepithema oblongum.

Carapunco, Tucumán, Argentina
Formica pallidefulva.  This young ant has just eclosed from a pupa and her integument is still pale and soft.   She will darken over time.

Champaign, Illinois, USA
Lasius (Acanthomyops) claviger citronella ants. The different colors of the workers reflect their age. Ants are pale in color when they first eclose from the pupal stage but darken over time.

Vermillion River Observatory, Illinois, USA
Lasius (Acanthomyops) claviger citronella ants.  The different colors of the workers reflect their age.  Ants are pale in color when they first eclose from the pupal stage but darken over time.

Vermillion River Observatory, Illinois, USA
Lasius (Acanthomyops) claviger citronella ants. The different colors of the workers reflect their age. Ants are pale in color when they first eclose from the pupal stage but darken over time.

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