Ingo Arndt / Red wood ant (Formica rufa) carrying construction material to anthill (fir needles), Germany.
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Ingo Arndt / European Red Wood Ant (Formica polyctena) nests in pine forest, Hessen, Germany, July.
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Ingo Arndt / Red Wood Ant (Formica rufa) mass sunbathing at nest, Hessen, Germany
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Konrad Wothe / Red Wood Ant (Formica rufa) colony reacting in defensive behavior by spraying formic acid from a gland in rear of their abdomens, Sweden
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Ingo Arndt / Red Wood Ant (Formica rufa) construction material on anthill surface, Germany.
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Ingo Arndt / Red wood ant (Formica rufa) carrying construction material to anthill (plant stem), Germany.
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Ingo Arndt / Red wood ant (Formica rufa) carrying construction material to anthill (fir needles), Germany.
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Ingo Arndt / Red wood ant (Formica rufa) carrying construction material to anthill (fir needles), Germany.
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Ingo Arndt / Red wood ants (Formica rufa) carrying construction material to anthill (fir needles), Germany.
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Ingo Arndt / Red wood ant (Formica rufa) carrying construction material to anthill (fir needle), Germany.
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Ingo Arndt / Red wood ant (Formica rufa) carrying construction material to anthill (fir needle), Germany.
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Ingo Arndt / Red wood ant (Formica rufa) carrying construction material to anthill (fir needle), Germany.
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Ingo Arndt / Red Wood Ant (Formica rufa) carrying large piece of construction material to anthill, Germany, March.
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Ingo Arndt / Red wood ant (Formica rufa) two workers fighting for construction material (fir needle) Germany, March.
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Ingo Arndt / Red wood ants (Formica rufa) basking on wood in early spring, close to anthill, Germany, March.
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Ingo Arndt / Red wood ants (Formica rufa) basking on wood in early spring, close to anthill, Germany, March.
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Ingo Arndt / Red wood ants (Formica rufa) basking on wood in early spring, close to anthill, Germany, March.
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Ingo Arndt / Red wood ants (Formica rufa) basking on wood in early spring, close to anthill, Germany, March.
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Ingo Arndt / European Red Wood Ant (Formica polyctena) nest in pine forest, Hessen, Germany, July.
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Ingo Arndt / European Red Wood Ant (Formica polyctena) nests in pine forest, Hessen, Germany, July.
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Philippe Clement / Old overgrown anthill of Red wood ants (Formica rufa) made of conifer needles in woodland, Abernethy Forest, Scotland, UK, September 2016.
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Philippe Clement / Information / conservation sign about Red wood ants / Horse ant (Formica rufa) nests made of conifer needles, Abernethy Forest, Scotland, September
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Bernard Castelein / Red wood ant (Formica rufa) with dead Ashy mining bee (Adrena cineraria), Klein Schietveld, Brasschaat, Belgium, April.
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Eric Baccega / Red Wood Ant (Formica polyctena) nest in forest, Alsace, France, May
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Eric Baccega / Red Wood Ant (Formica polyctena) nest in forest, Alsace, France, May
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Jussi Murtosaari / Red Wood Ants (Formica rufa) predating a beetle, Joutsa (formerly Leivonmaki), Finland, July.
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Thomas Marent / Red Wood Ant (Formica rufa) anthill in forest, Muotathal, Switzerland
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Thomas Marent / Red Wood Ant (Formica rufa) anthill in forest, Muotathal, Switzerland
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Ingo Arndt / Red Wood Ant (Formica rufa) carrying construction material to anthill
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Ingo Arndt / Red Wood Ant (Formica rufa) carrying construction material to anthill
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Ingo Arndt / Red Wood Ant (Formica rufa) carrying construction material to anthill
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Konrad Wothe / Red Wood Ant (Formica rufa) colony squirting acid, Bavaria, Germany
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Ingo Arndt / Red Wood Ant (Formica rufa) group sunbathing in early spring, Germany
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Ingo Arndt / Red Wood Ant (Formica rufa) group sunbathing in early spring, Germany
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Ingo Arndt / Red Wood Ant (Formica rufa) swarm, Hessen, Germany
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Ingo Arndt / Red Wood Ant (Formica rufa) group at nest entrance, Germany
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Ingo Arndt / Red Wood Ant (Formica rufa) drinking from water droplet, Hessen, Germany
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Ingo Arndt / Red Wood Ant (Formica rufa) drinking from puddle on leaf, Hessen, Germany
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Konrad Wothe / Red Wood Ant (Formica rufa) anthill in mountains with flowers, Europe
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Thomas Marent / Red Wood Ant (Formica rufa) climbing on twig, Switzerland
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Thomas Marent / Red Wood Ant (Formica rufa) group swarming on anthill, Switzerland
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Ingo Arndt / Red Wood Ant (Formica rufa) carrying construction material to anthill
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Ingo Arndt / Red Wood Ant (Formica rufa) carrying construction material to anthill
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Ingo Arndt / Red Wood Ant (Formica rufa) cleaning antenna, Germany
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Staffan Widstrand / Ant hill made by Red wood ants (Formica rufa) in forest, Parlalven old-growth wilderness forest Nature Reserve, Norrbotten, Sapmi, Lapland, Sweden. August.
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Vishal Jadhav / Giant wood spider (Nephila pilipes) female eating a Red ant caught in the web, Maharashtra, India, November.
01663714
Jeff Foott / Red ant (Formica sp) colony on anthill. Yellowstone National Park, Wyoming, USA. June.
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Jeff Foott / Red ant (Formica sp) colony on anthill. Yellowstone National Park, Wyoming, USA. June.
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Jeff Foott / Red ant (Formica sp) colony on anthill. Yellowstone National Park, Wyoming, USA. June.
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Jeff Foott / Red ant (Formica sp) colony on anthill. Yellowstone National Park, Wyoming, USA. June.
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Jeff Foott / Red ant (Formica sp) anthill in grassland. Yellowstone National Park, Wyoming, USA. June.
