Knowledgebase

Is this a brown recluse. #415319

Asked July 19, 2017, 9:50 AM EDT

I have a lot of those at my house. Please let me know. John.

Mesa County Colorado

Expert Response

It's not possible to tell for sure from the photos. However, brown recluse spiders do not occur in Colorado. They have been collected here a few times, but always in association with household effects of someone who has moved into the state from an infested area. See http://extension.colostate.edu/topic-areas/insects/brown-recluse-spiders-in-colorado-recognition-and... for details. See http://extension.colostate.edu/topic-areas/insects/spiders-in-the-home-5-512/ for information regarding common spiders in Colorado.