Tiny Black Hopping Insects

Asked June 22, 2017, 9:26 AM EDT

Please help identify tiny black insects that are congregating by the thousands primarily on wood surfaces surrounded by native plants. They are smaller than a pepper flake, no coronation other than black, no striation, and they hop when agitated. A collection in a sealed plastic bag has them hopping like popcorn. Cannot locate their source on plants or ground; no visible nests.

St. Louis County Minnesota

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