Arizona species
Woodlouse spiders in Arizona
Dysdera crocata
A reddish, big fanged spider that hunts pill bugs in damp spots. Bites cause only minor pain.
Low
Source: Penn State Extension: Woodlouse Hunter Spider
Source: Vetter and Isbister: Verified bites by the woodlouse spider
How to identify
- Reddish orange front body and legs.
- Pale, dirty white or creamy gray abdomen.
- Large fangs that angle forward.
- Six eyes, so it is sometimes mistaken for a recluse.
- Size
- Females about 1/2 inch long; males a little smaller.
- Habitat
- Damp spots under stones, logs, mulch and potted plants, where pill bugs live.
- Where in Arizona
- Not native. Arizona records on iNaturalist come mostly from Prescott, Flagstaff and the Verde Valley, with some Phoenix records.
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.
Call Hydra if woodlouse spiders keep coming inside. Our Service Pros look at the damp areas and pill bugs that feed them.
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
Is the woodlouse spider dangerous?
No. A study of verified bites found the main symptom is minor pain, usually lasting less than an hour.
What does it eat?
Mostly pill bugs and sow bugs, which its large fangs are built to pierce.