Entomology (Study of Bugs)/Small Round Brown Bug


Small brown bug
Small brown bug  

I have found 3 or 4 of these bugs in my apartment in the past few months (I live in New York City.) At first I was concerned that they were bed bugs, but after doing some research it doesn't seem like they are...?

They're very small, and have big round bodies.

Can you identify them? Thanks!

Hi, Amy:

I'm changing this question to "public" because I have gotten a couple other questions already about these particular insects, and there is no private information in the question....

The creatures in your image are spider beetles, one of two potential species:




Ah, make that one of three potential species.  I consider them an odd nuisance, but do see if you can find where they are originating (old bag of flour, perhaps?  Other pantry products?).  Simply discard any infested material.

Still, these beetles are typical of very old buildings with seemingly no food sources to sustain them.


Entomology (Study of Bugs)

All Answers

Answers by Expert:

Ask Experts


Eric R. Eaton


I answer insect and spider identification questions ONLY. Attach images if possible. No "what bit me?", "what do I feed this bug in captivity?", or science fair project questions please. NO TECHNICAL QUESTIONS ABOUT INSECT PHYSIOLOGY.


Principal author, Kaufman Field Guide to Insects of North America. Professional entomologist employed previously at University of Massachusetts, Chase Studio, Inc., and Cincinnati Zoo; contract work for West Virginia Department of Natural Resources, Smithsonian Institution, and Portland (Oregon) State University.

Author, Kaufman Field Guide to Insects of North America, Missouri Conservationist magazine, Ranger Rick, Birds & Blooms, Timeline (journal of the Ohio Historical Society). I have contributed to several books as well.

Oregon State University, undergraduate major in entomology, did not receive degree.

Awards and Honors
One of the top 50 experts in all categories for AllExperts.com, 2009.

Past/Present Clients
Principal author of the Kaufman Field Guide to Insects of North America, Smithsonian Institution (contract), Cincinnati Zoo (employer), Portland State University (contract), Chase Studio, Inc (employer), Arkansas Museum of Discovery (guest speaker). Currently seeking speaking engagements, leadership roles at nature festivals, workshops, and ecotours.

©2017 About.com. All rights reserved.