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Entomology (Study of Bugs)/Mystery bugs in 5 window sills


Brown bug
Brown bug  

Cream Bug
Cream Bug  

I just purchased a house in Southington Connecticut U.S.A a couple months ago. There is evidence of "past" termite infestation but there wasn't any live termites found. When I open the windows in one section of the house I find a lot of these small bugs in the window sills. The cream colored ones are about 2-3mm long and the brown one is maybe 3mm long. I know the picture is blurry, run so fast! Is there anyway you can tell if either of them termites?

Dear Jennifer - No worries here - These are booklice (Psocodea: Liposcelidae), basically nuisance pests that do no real harm, feeding primarily on mold spores or bits of organic material that has been moisture-damaged. They thrive under conditions of dampness/high humidity, so lowering indoor humidity levels as much as practical, and eliminating unnecessary moisture sources will help keep their numbers low. See for more detailed information.

Hope this helps,

Entomology (Study of Bugs)

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Ed Saugstad


Will accept most questions in general entomology, including those related to medical entomology, taxonomy, ecology, arthropod surveillance, and pest management. If you are requesting a 'mystery bug' identification, PLEASE either attach an image to your question, or post an image on a web page (such as Flickr) so that I can look at it, as verbal descriptions frequently are insufficient for a definitive identification.


21 years in the U.S. Army as a medical entomologist; duties varied from surveillance of pest populations (including mosquitoes, cockroaches, ticks, and stored products pests) to conducting research on mosquito-virus ecological relationships and mosquito faunal studies. Ten years as a civilian analyst for the Department of Defense, primarily on distribution of vector-borne diseases worldwide. Limited experience on surveillance of agricultural insects in North Dakota and Indiana.

Entomological Society of America, West Virginia Entomological Society, Society for Vector Ecology, National Speleological Society, West Virginia Association for Cave Studies.

American Journal of Public Health, Contributions of the American Entomological Institute, Japanese Journal of Sanitary Zoology, Journal of Economic Entomology, Mosquito News, and Mosquito Systematics.

B.S. in entomology from North Dakota State University in 1963, M.S. in entomology from Purdue University in 1967.

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