Arizona species
Orb weaver spiders in Arizona
Family Araneidae (western spotted orbweaver and relatives)
Builders of round, wheel shaped webs in yards and porch lights. Harmless, beneficial pest controllers.
Source: University of Arizona Cooperative Extension: Spiders (Backyard Gardener #177)
Source: UC Riverside Center for Invasive Species Research: How to identify brown widow spiders
How to identify
- Builds the classic round, wheel shaped web.
- Large, rounded abdomen, often with spots or chevrons.
- Spines on the legs, which widow spiders don't have.
- Often sits in the web center at night and hides by day.
- Size
- Varies by species. The western spotted orbweaver is one of the larger orb weavers in the Southwest.
- Habitat
- Gardens, shrubs, patios, porch lights and eaves.
- Where in Arizona
- The western spotted orbweaver is the orb weaver most often reported in Arizona on iNaturalist, along with garden spiders. UA Extension calls orb weavers excellent pest controllers.
Look-alikes
Prevention
- Seal gaps around doors, windows and utility lines.
- Repair screens and add door sweeps.
- Reduce clutter near walls and in garages.
- Cut down on the insects spiders feed on, including near outdoor lights.
Orb weavers are beneficial. Call Hydra if webs keep building up around doors and lights.
When to call Hydra
Call or text us, we answer both. Or send us your details and we'll come back with a free custom quote.
Frequently asked questions
Are orb weavers dangerous?
No. UA Extension describes orb weavers as excellent pest controllers in gardens and landscapes.
Is it a brown widow?
UC Riverside notes people often mistake orb weavers for brown widows. Orb weavers have spiny legs; widow spiders don't.