Around Wyoming
Conditions vary across the state. Choose your city below, then describe what’s happening around your home or business.
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Local spider information
Spider control in Wyoming
Learn what to look for around your property, explore your city, and ask about an inspection or a quote.
Spiders in Wyoming: what to know
What to note
Where you see spiders, how long it has been going on, and anything you’ve already tried are the most useful details to mention.
A useful next step
Ask about an inspection, what treatment would involve, and whether follow-up visits are included. You don’t need to identify the problem yourself before getting in touch.
Local research
Spiders in Wyoming: what the public record shows
Before you compare quotes, it helps to know which spiders actually live in Wyoming, when they are busiest, and what the state figures look like. Everything below links to the agency or university page it came from.
one very common, the other very rare in Wyoming
Brown recluse in Wyoming
The UW Extension entomologist's own framing: western black widow common, brown recluse very rare.
University of Wyoming Extension (Barnyards & Backyards, Fall 2020)in over fourteen years the UW Extension entomologist received two brown recluse specimens, both traced to out-of-state travel or a parts shipment from Missouri
Confirmed Wyoming recluse submissions
Two spiders in fourteen years of statewide identifications is the real base rate.
University of Wyoming Extension (Barnyards & Backyards, Fall 2020)people have submitted hundreds of spiders they suspected were brown recluses, but the vast majority have been the barn funnel weaver (Tegenaria domestica)
What Wyoming 'recluses' actually are
The barn funnel weaver has thick barred hairy legs and eight eyes; the recluse has slender bare legs and six.
University of Wyoming Extension (Barnyards & Backyards, Fall 2020)Spider species recorded in Wyoming
- Western black widow (Latrodectus hesperus) — 'The black widow spider, Latrodectus hesperus, is the most common harmful spider in California' and 'occur in most parts of California' (UC IPM); 'common in Colorado' (CSU); Lat…
- Hobo spider (Eratigena agrestis) — European funnel weaver 'detected in the Pacific Northwest in 1936', now 'throughout northern Utah' and 'throughout Washington'. Current extension/health stance: not medically si…
When spiders are busiest in Wyoming
Black widows are spotted sunning in webs on cool summer mornings; spiderlings disperse into buildings and are too small to exclude by sealing alone (UW Extension).
University of Wyoming Extension entomologist Scott Schell: brown recluses 'are apparently an outdoor spider that spills indoors in their native range, the southcentral U.S.' Wyoming's real medically significant spider is the western black widow, and 'black widows bite very few people despite being common in Wyoming.'
Rules that apply in Wyoming
For context, nationally
Sources: University of Wyoming Extension (Barnyards & Backyards, Fall 2020); CDC/NIOSH; Pest Notes: Spiders (PN 7442); Hobo Spider. Figures are quoted as the source prints them. How we check our sources
Explore Wyoming cities
Casper
Semi-Arid Continental · suburban setting
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Cheyenne
Semi-Arid Continental · suburban setting
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Evanston
Semi-Arid Continental · rural setting
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Gillette
Semi-Arid Continental · rural setting
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Jackson
Warm Summer Continental · rural setting
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Laramie
Semi-Arid Continental · suburban setting
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Rock Springs
Semi-Arid Continental · rural setting
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Sheridan
Semi-Arid Continental · rural setting
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Cody
Semi-Arid Continental · rural setting
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