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A bark louse pauses to groom its hind leg. Urbana, Illinois, USA
A colorful bark louse (Psocidae). Icononzo, Tolima, Colombia
A herd of lichen-feeding bark lice graze their way across a tree trunk. Icononzo, Tolima, Colombia
A bark louse pauses to groom its hind leg.

Urbana, Illinois, USA
A bark louse pauses to groom its hind leg. Urbana, Illinois, USA
A bark louse pauses to groom its hind leg.

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