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In some cave species, there are no eyes at all (e.g. Stalita taenaria). Sometimes one pair of eyes is better developed than the rest. Several families of hunting spiders, such as jumping spiders and wolf spiders, have fair to excellent vision. The main pair of eyes in jumping spiders even sees in colour. [1]
The outer pair are "secondary eyes" and there are other pairs of secondary eyes on the sides and top of its head. [25] Eyes of the jumping spider, Plexippus paykulli. Spiders have primarily four pairs of eyes on the top-front area of the cephalothorax, arranged in patterns that vary from one family to another. [13]
Sometimes one pair of eyes is better developed than the rest, or even, in some cave species, there are no eyes at all. Several families of hunting spiders, such as jumping spiders and wolf spiders , have fair to excellent vision.
Six-eyed spiders are spiders that, unlike most spider species, lack the principal pair of eyes, leaving them with only six eyes instead of the usual eight. [1]
So, moving on, spiders consume about 10 percent of their body weight per day. (If you weigh 200 pounds, imagine eating 20 pounds of meat daily.
They are usually much smaller than the posterior lateral eyes and there is doubt about whether they are at all functional in many species. The body length of jumping spiders generally ranges from 1 to 25 mm (0.04–0.98 in).
The "factoid" is definitely eye-catching — but it's also improbable. ... But the book has no section on spiders, and the claim about eating spiders isn't there.
Spiders inside your home were likely born there, according to Terminix, meaning a female spider might've placed one of her egg sacs in an undisturbed area of your home, like crawl spaces, storage ...