The Cave Scorpion (Pseudouroctonus apacheanus) is dark brown to blackish-brown and typically measures 1.5–2.5 inches. The cave scorpion (Pseudouroctonus apacheanus), also known as the Apache scorpion, is a dark, slender scorpion found in caves, abandoned mines, deep rock crevices, and the underside of rocks in Arizon.

The Cave Scorpion is generally low-risk, but caution is still advised. Sting produces localized pain. Not considered medically significant. Rarely encountered in typical residential settings.

In Arizona, cave scorpions are most often encountered in the following situations: Sightings in dark, cool, humid areas such as basements, crawl spaces, or rocky hillside structures. Glowing green under UV blacklight. Found under rocks in mountain and foothill terrain.

The Cave Scorpion is most active during: Year-round; less seasonal than desert species. Arizona's warm desert climate can extend activity periods compared to other states, so year-round vigilance is recommended in the Phoenix metro and surrounding areas.

Seal basement and crawl space entry points. Reduce moisture in below-grade areas. Inspect and seal gaps in structures built into rocky hillsides.

Targeted treatments in basements, crawl spaces, and other dark, humid harborage areas. Entry point sealing is the most effective long-term control measure.

Yes — like all scorpions, Cave Scorpions fluoresce bright green under UV (blacklight) illumination. Scanning your yard, garage, and home perimeter with a UV flashlight after dark is one of the most effective ways to locate and monitor scorpion activity. Pest Control Bros recommends this technique as part of any scorpion management program.