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western thatching ant

Formica obscuripes


Large mound constructed on edge of alder thicket adjacent to Interstate 90. Temperature about 50F and overcast. The ants had gathered together on the top of the mound.


Grassy opening on freeway right-of-way next to alder thicket.

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1 Comment

Ava T-B
Ava T-B 7 years ago

Please consider adding this spotting to the Animal Architecture mission at

Jeff Dreier
Spotted by
Jeff Dreier

Washington, USA

Spotted on Apr 3, 2014
Submitted on Apr 8, 2014

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