Arizona species
Cat-faced spiders in Arizona
Araneus gemmoides
A plump, two humped orb weaver of cooler Arizona areas. Harmless and often seen near porch lights in fall.
Low
Source: Colorado State University Extension: Cat-Faced Spider
How to identify
- Round abdomen with two humps on the front that look like cat ears.
- Color ranges from straw to dark grayish brown.
- Builds a round orb web, often near porch lights or windows.
- Most often seen in late summer and fall.
- Size
- Large females are about 1/4 inch long, according to Colorado State University Extension.
- Habitat
- Eaves, porch lights, windows, fences and shrubs.
- Where in Arizona
- On iNaturalist, Arizona records come mostly from cooler, higher areas such as Flagstaff, Prescott, Payson and the North Rim, so it fits the White Mountains more than the low desert.
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.
Cat-faced spiders are harmless. Call Hydra if webs keep collecting around doors and lights.
When to call Hydra
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Frequently asked questions
Are cat-faced spiders dangerous?
No. Colorado State University Extension says a mature one may give a sharp pinch if handled but normally can't pierce the skin and isn't dangerous.
Why do I see them in fall?
Females grow large as their eggs develop late in the season, and they often set webs near lights that draw insects.