Nymph of a chinch bug

6520. Recently put in new pool. And this week noticed large amount of these bugs crawling around the edge. Scoping them out by the hundreds. Can’t figure out what type of bug this is. Any insight would be helpful. Komoka, Ontario. Canada

Number 6520.  Looks like a nymph of a chinch bug (Hemiptera/Heteroptera: Blissidae; Blissus sp.), Click here for an image. These can be serious lawn/turf pests, Click here for more detailed information.