Arizona Scorpion Species Guide
Desert Hairy Scorpion
Identification, Size, Habitat, Burrows & Behavior
The Desert Hairy Scorpion (Hadrurus arizonensis) is one of Arizona’s most distinctive desert scorpions and the largest scorpion species in the United States. Its large body, powerful pincers, thick tail and ground-dwelling behavior make it noticeably different from the smaller Arizona bark scorpion.
Quick Identification
What Does a Desert Hairy Scorpion Look Like?
Desert Hairy Scorpions are large, heavy-bodied scorpions with strong pincers, a thick segmented tail and numerous fine sensory hairs. Their legs and portions of the body are often yellowish to tan, while the upper body may appear considerably darker. Their size and robust build help distinguish them from Arizona bark scorpions.
Arizona Species
What Is a Desert Hairy Scorpion?
The Desert Hairy Scorpion is a large desert-dwelling species found across portions of the southwestern United States and northern Mexico. In Arizona, it is primarily associated with lower-elevation desert environments where it can construct deep burrows in the soil.
Unlike the Arizona bark scorpion, which commonly climbs walls, trees and structures, the Desert Hairy Scorpion is primarily ground-oriented and spends much of its time in or near burrows.
Identification Features
How to Identify a Desert Hairy Scorpion
Look at the scorpion’s overall size, body shape, pincers, coloration and behavior rather than relying on color alone.
Large Size
Adults commonly reach around five inches in length, making them noticeably larger than many Arizona scorpion species.
Robust Pincers
Their large, powerful pincers are much heavier than the narrow pincers of an Arizona bark scorpion.
Thick Tail
The segmented tail is substantial and is often held prominently when the scorpion assumes a defensive posture.
Sensory Hairs
Fine hairs across the body help the scorpion detect vibrations and are the origin of the common name “hairy scorpion.”
Size
How Big Do Desert Hairy Scorpions Get?
The Desert Hairy Scorpion is the largest scorpion species in the United States. Adults commonly reach around five inches in length, while exceptionally large individuals may approach six inches.
Their large size is often the first characteristic homeowners notice. A mature Desert Hairy Scorpion can look substantially more massive than an Arizona bark scorpion because of its heavier body, thick tail and powerful pincers.
Sensory Adaptation
Why Is It Called a Desert Hairy Scorpion?
The name comes from the numerous fine sensory hairs covering portions of the scorpion’s body and appendages.
These hairs help the scorpion detect subtle vibrations and movement in its surroundings, which is especially useful for locating prey and responding to potential threats in a dark desert environment.
Natural Habitat
Where Do Desert Hairy Scorpions Live?
Desert Hairy Scorpions are strongly associated with arid desert environments. In Arizona they may be found in sandy or gravelly soils, rocky desert areas, washes and other lower-elevation desert habitat suitable for burrowing.
Burrowing Behavior
Do Desert Hairy Scorpions Dig Burrows?
Yes. Desert Hairy Scorpions are accomplished burrowers and may construct surprisingly deep burrows in desert soil. These burrows provide protection from extreme daytime temperatures and dry surface conditions.
As desert soil dries, a Desert Hairy Scorpion may extend its burrow deeper toward areas where more moisture remains. This strong association with underground shelter is one of the behavioral differences between Desert Hairy Scorpions and climbing bark scorpions.
Nighttime Behavior
When Are Desert Hairy Scorpions Active?
Desert Hairy Scorpions are primarily nocturnal. They typically remain sheltered during daylight hours and emerge at night to forage for prey.
Like other scorpions, they fluoresce under ultraviolet light, so a UV flashlight can make nighttime observation easier in areas where scorpions are active.
Desert Predator
What Do Desert Hairy Scorpions Eat?
Desert Hairy Scorpions are predators that feed on insects and other arthropods. Their large size also allows them to overpower larger prey than many smaller scorpion species.
Their diet may include insects, spiders, other scorpions and occasionally small vertebrates such as lizards.
Species Comparison
Desert Hairy Scorpion vs. Arizona Bark Scorpion
The Desert Hairy Scorpion and Arizona bark scorpion differ substantially in size, body shape, habitat and behavior.
Desert Hairy Scorpion
Size: Very large
Body: Heavy and robust
Pincers: Large and powerful
Habitat: Ground and burrows
Behavior: Primarily ground-dwelling
Arizona Bark Scorpion
Size: Smaller
Body: Slender
Pincers: Narrow and delicate
Habitat: Crevices, walls and trees
Behavior: Strong climber
Sting Risk
Are Desert Hairy Scorpions Dangerous?
Desert Hairy Scorpions can sting defensively, but their venom is considered relatively low in toxicity compared with the Arizona bark scorpion. A sting can still be painful, so direct handling should be avoided.
If someone is stung by a scorpion, contact Poison Control at 1-800-222-1222 for case-specific guidance. Seek emergency medical care for severe symptoms or a medical emergency.
Around Your Property
What Should You Do If You Find a Desert Hairy Scorpion?
Avoid handling the scorpion directly and keep children and pets away. If the scorpion is indoors, note where it was found and consider whether doors, garages or other exterior openings could have provided access.
A Desert Hairy Scorpion found near natural desert habitat may simply be part of the surrounding ecosystem. Repeated indoor encounters provide more reason to evaluate entry points and conditions around the property.
Arizona Scorpion Species
How Does the Desert Hairy Scorpion Fit Into Arizona’s Scorpion Population?
Arizona supports many scorpion species occupying different habitats. The Desert Hairy Scorpion is a large ground-dwelling desert species, while bark scorpions and stripe-tailed or devil scorpions occupy different ecological niches.
Desert Hairy Scorpion FAQ
Frequently Asked Questions About Desert Hairy Scorpions
How large is a Desert Hairy Scorpion?
Do Desert Hairy Scorpions live in burrows?
Are Desert Hairy Scorpions venomous?
Can Desert Hairy Scorpions climb walls?
What do Desert Hairy Scorpions eat?
Do Desert Hairy Scorpions glow under a blacklight?
Arizona Scorpion Resource Center
Learn More About Arizona Scorpions
Explore related species, risk, prevention and control guides in our Arizona scorpion resource cluster.
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