Arizona Brown Spider
This is a small, inconspicuous brown spider, with slightly darker brown markings on the cephalothorax. These markings vaguely resemble the shape of a violin, hence the common names "violin" or "fiddle" spider. The species native to this area is closely related to the infamous brown recluse of the midwestern United States, but the markings are less obvious and symptoms are not as severe.
The bite of this spider is potentially dangerous to humans. The most common reaction is a spreading sore at the site of the bite, which, if untreated, may result in permanent tissue damage or necrosis.
Wash area with soap and water. Call the Banner Good Samaritan Poison and Drug Information Center immediately at 1-800-222-1222 to determine whether the bite victim can be cared for at home or will require treatment by a physician or hospitalization.
Removal of trash or debris (woodpiles, boxes, tires, etc.) stored around the home. Seal openings in the home that could be entry points. Recommend regular pest control service plan.
There are many labeled pesticides for spider control. Some are labeled for homeowner use, while others are labeled only for the licensed, certified pesticide applicator.