Recluse Spiders in Colorado. The brown recluse, and all other recluse spiders, are extremely rare in Colorado. Confirmed specimens at the Denver Museum of Nature and Science collection include only one specimen of Loxoceles reclusa collected from the state (Boulder County, 1996). read more
Brown Recluse spiders are notorious for NOT expanding to new locales. They seem content to stay pretty much where they are found. One thing to remember when looking at a spider’s range; it is much like a thunderstorm. read more
This is a growing concern, as more people are moving to Colorado from other areas of the country. 2. Hobo Spider Hobo Spider. Causing necrosis in a similar but more mild fashion than the brown recluse, the hobo spider is generally referred to as an “aggressive house spider”. read more