A strange one

5749   In Ottawa, ON, about 3mm long, swarms of them came out on a hot summer day and running around the concrete/pavers.

I hate to admit it, but this one has me (temporarily, at least) completely bamboozled. It superficially resembles a nymph of a damsel bug (see http://tinyurl.com/hg5ues5 for an example), but I do not know of any damsel bugs having this colour pattern, and being predators, it would be extremely unusual to see large numbers of them in one place. I’ll keep trying… Ed Saugstad, retired entomologist; Sinks Grove, WV.