The Arizona Grass Scorpion (Chihuahuanus coahuilae) is pale yellowish-tan, slender build and typically measures 1.5–2.5 inches. The Arizona grass scorpion (Chihuahuanus coahuilae) is a slender, pale scorpion found primarily in grassy, vegetated, and riparian habitats in southern Arizona and into Mexico. It is less commonly enc.

The Arizona Grass Scorpion is generally low-risk, but caution is still advised. Sting produces mild, localized pain. Not considered medically significant. Less aggressive than bark scorpions and less likely to be encountered inside the home.

In Arizona, arizona grass scorpions are most often encountered in the following situations: Sightings in grassy areas, garden beds, or near irrigated landscaping. Glowing green under UV blacklight. Occasionally found in garages or ground-floor areas adjacent to grassy yards.

The Arizona Grass Scorpion is most active during: Year-round; most active during monsoon season (July–September). 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.

Keep grass trimmed short. Reduce irrigation that creates lush vegetation near the home. Seal ground-level entry points. Shake out shoes and clothing left in grassy areas.

Perimeter treatments targeting grassy and vegetated areas. Granular applications in garden beds and lawn edges.

Yes — like all scorpions, Arizona Grass 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.