Bark scorpion bites in Utah
Utah has 65 verified bark scorpion records in the GBIF biodiversity database — one of the highest counts in the country. Sightings concentrate in May, July, September, October. The bite itself appears immediate burning pain and lasts pain and tingling can persist 24 to 72 hours.
| Verified records | 65 |
|---|---|
| Peak sightings | May, July, September, October |
| State bite season | April to October |
| Active | night |
| Habitat | the Southwest, especially Arizona — under bark, rocks, in block walls, and indoors in shoes and bedding |
| Bite appears | immediate burning pain |
Identifying it in Utah
The distinguishing feature is the mismatch: severe burning pain and tingling with almost nothing to see. Tapping the site sharply increases the pain, which clinicians use as a bedside sign.
Locally, the species most often confused with it are honey bee sting, mosquito bite, paper wasp sting — all of which are also recorded in Utah.
Seek medical care if
- roving eye movements, slurred speech, muscle twitching or difficulty swallowing — emergency, especially in children
- breathing difficulty
- any sting in a young child or an older adult
What else it could be in Utah
These are recorded in Utah too and are the ones most often confused with it here. The differences below are the ones that actually separate them.
| Bark scorpion sting | Yellowjacket sting | |
|---|---|---|
| Pattern | single site | single or several — this wasp can sting repeatedly |
| Where on body | hands, feet — commonly a bare foot at night or a hand into a stored item | hands, face, neck |
| Appears | immediate burning pain | immediate sharp pain |
| Records here | 65 | 60 |
Season in Utah specifically
Records in Utah concentrate in May, July, September, October, which is what local sighting data shows rather than a national average — seasonality shifts substantially with latitude. The general bite season in Utah runs April to October.
Because the Southwest, especially Arizona — under bark, rocks, in block walls, and indoors in shoes and bedding, exposure in Utah tends to be concentrated in specific places rather than spread evenly — which is why a bite history ("where were you in the 24 hours before?") narrows the answer faster than the appearance of the mark.
Care
- wash and apply a cold pack
- over-the-counter pain relief for a simple sting in a healthy adult
- emergency care for a child, or for any neurological symptom — antivenom exists
Avoiding them in Utah
- shake out shoes, towels and bedding
- shoes and a torch outdoors at night
- seal gaps under doors; they can pass through a credit-card-width crack
Questions
When are bark scorpions active in Utah?
Utah records peak in May, July, September, October. The general bite season in Utah runs April to October.
Are they common in Utah?
Utah accounts for 65 verified records in GBIF, ranking it 3rd among states for this species. Records reflect reporting effort as well as abundance.
What does the bite look like?
often no visible mark at all — pain out of proportion to what can be seen, minimal redness. Single site.
Get a photo assessment in the app
Everything above is free to read. The app adds what a page cannot: point your camera at the bite and get an assessment of the most likely cause, a severity read, and a day-by-day care plan — including the specific signs that mean you should be seen.
iPhone and iPad. Free to download.