Final answer:
To identify an Arizona spider, look for key arachnid characteristics such as four pairs of legs and a fused head and thorax. Common examples include the Arizona brown spider, the black widow, and the tarantula. For accurate identification, a detailed description or image is helpful.
Step-by-step explanation:
Identifying an Arizona spider can be challenging given the diversity of spiders in the region. However, all arachnids, including spiders, have certain characteristics such as four pairs of legs, specialized appendages, and a fused head and thorax, as described in the summary from the CK-12 Foundation.
In Arizona, a few common spiders might include the Arizona brown spider, the black widow, and the tarantula. It's important to handle spider identification with care, as some species can be venomous. If an image or detailed description of the spider in question is provided, a more precise identification could be made.