Biology Stack Exchange is a question and answer site for biology researchers, academics, and students. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I found this bug in my apartment in Chicago. We had bed bugs in our house the previous year (but we thought we got rid of them). This bug was very small - maybe 2 millimeters in length. These photos are all of the very same bug (just different lighting).

bug photos

share|improve this question
Can you smell almonds? Bud bugs have a distinctive smell usually described as being "like almonds". – Jack Aidley Aug 9 '13 at 10:34
No noticeable smell. – bearMountain Sep 6 '13 at 16:20
up vote 6 down vote accepted

This is a really old thread but just in case someone happens upon it, this isn't a bed bug.

I am not an expert but it looks like it's likely a book louse or psocid. See comparison photos of unfed first instar bed bug nymphs vs. psocids/booklice here: It's all about the shape of the head and body.

share|improve this answer
I agree, I've had book lice in my Fly lab before and this looks rather like it! – rg255 Apr 24 '14 at 9:56
Thanks for following up with this. I think you're right, the photo you linked to looks spot on. Actually, the lady in the apartment above us had lice one or two times during this period - so that must have been what I found. Actually, I'm relieved, I'd rather fight lice than bed bugs. Either way, our apartment seems to be bug free now. – bearMountain Apr 27 '14 at 15:25
This is deifnitely a psocid species. See here for another SE example. – theforestecologist Mar 17 at 1:51
Also book lice are not the same as head lice (and are in fact in totally different orders) – theforestecologist Mar 17 at 1:56
Wow, the internet is weird! Can't believe that I took a photo of a very tiny bug with my phone and then someone across the world identified it. Modern society is pretty trippy man. – bearMountain Mar 17 at 22:14

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.