The Black Widow Spider (Latrodectus hesperus) is glossy black with red hourglass marking (female) and typically measures Female: 1.5 inches including legs; Male: smaller. The western black widow (Latrodectus hesperus) is one of the most recognizable and feared spiders in North America. Females are glossy black with a distinctive red hourglass marking on the underside o.

Yes — the Black Widow Spider is considered a high-risk pest. Black widow venom is a potent neurotoxin. Bites cause immediate pain followed by muscle cramps, abdominal rigidity, sweating, and nausea. Symptoms can last 1–3 days. Medical attention is recommended for all suspected black widow bites, especially in children and elderly individuals.

In Arizona, black widow spiders are most often encountered in the following situations: Irregular, tangled webs close to the ground in dark, sheltered areas. Egg sacs — round, papery, off-white — suspended in the web. Sightings in garages, under patio furniture, in wood piles, or around pool equipment.

The Black Widow Spider is most active during: Year-round; most active spring through fall. 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.

Wear gloves when handling wood, rocks, or debris. Shake out shoes and clothing left outdoors. Keep garages and storage areas organized and clutter-free. Seal gaps in exterior walls and around utility penetrations.

Targeted residual spray treatments to harborage areas, web removal, and perimeter treatments. Regular inspections of garages, sheds, and outdoor structures are recommended.

If you spot a Black Widow Spider indoors, avoid handling it directly. Capture it under a glass if possible for identification, or photograph it for reference. Contact Pest Control Bros for a professional inspection — we can confirm the species, assess the severity of the infestation, and recommend targeted treatment.