White-margined burrowing bug

7444.      Located on East-South facing outside wall but migrating to all sides of the house. We had consecutive days of rain. Current temperature 21*C, Daytime high of 27*C. Mass of them on concrete foundation. They were not there yesterday. Impressive amount of them. Mont-Tremblant, Quebec. Canada

 

Number 7444.    These look like nymphs of the white-margined burrowing bug, Sehirus cinctus (Hemiptera/Heteroptera: Cydnidae). They feed primarily on the seeds of plant in the mint and nettle families.