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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]
A study in 1992 estimated that there were 500,000 ... the main eyes of spiders are pigment-cup ... Although arthropods are the most numerous phylum on Earth, and ...
Also, brown recluse spiders have six eyes, instead of the eight that many other spiders have. ... Jumping spider. What they look like: There are more than 300 species of these, and they all look a ...
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]
The estimations are based on research into how many spiders live on a square meter of land for all main habitat types of earth, and the average amount of food consumed by spiders of different ...
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.
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.