Definitely a book louse commonly called psocid. Now these and the true lice are
included in a new order, Psocodea. The clypeus is very much enlarged in these
insects. Their activity typically related to moisture condition and mold/fungus
growth; will feed on dead insects, too.
Thanks everyone for your input. I was thrown off by the wings as the booklice
in our Library have none. According to the MuseumPests Fact Sheet, the outdoor
related species of barklice often have wings. I had no idea. I’ll keep checking
my traps and see if they are still active.
Rachel
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