How many eyes does a spider have Wikipedia?

The eye arrangement of this wolf spider is typical of hunting spiders, having eight eyes, with two rows, and two primary eyes.Oct 28, 2014 read more

Spiders are air-breathing arthropods that have eight legs and chelicerae with fangs that inject venom. They are the largest order of arachnids and rank seventh in total species diversity among all other orders of organisms. Spiders are found worldwide on every continent except for Antarctica, and have become established in nearly every habitat with the exceptions of air and sea colonization. As of November 2015, at least 45,700 spider species, and 113 families have been recorded by taxonomists. read more

Eyes Have It. Spider eyes are more like human eyes than the compound eyes of other insects. As mentioned earlier, most spiders have eight. It's thought that the first two are descended from the early "simple" eyes of arachnid ancestors, but that the others came from the "splitting up" of ancestral compound eyes. read more

Most species of the Haplogynae have six eyes, although some have eight (Plectreuridae), four (e.g., Tetrablemma) or even two (most Caponiidae). Sometimes one pair of eyes is better developed than the rest, or even, in some cave species, there are no eyes at all. read more