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Basic arrangement of spider eyes, viewed from above. Most spiders have eight eyes, which tend to be arranged into two rows of four eyes on the head region. The eyes can be categorised by their location and are divided into the anterior median eyes (AME), anterior lateral eyes (ALE), posterior median eyes (PME), and posterior lateral eyes (PLE).
The posterior lateral (PLE) and anterior lateral eyes (ALE) provide the spider with a 360-degree survey of its surroundings. Field of vision of the ALE overlap in front of the spider. Each anterior medial eye (AME) consists of a long tube that can be moved independently to scan the area in front of the spider with high resolution.
Movement of the retina in jumping spiders is analogous to the way many vertebrates, such as primates, move their entire eyes to focus images of interest onto their fovea centralis. In jumping spiders with a translucent carapace, such movements within the jumping spider's eyes are visible from outside when the attention of the spider is directed ...
A test in 1997 showed that P. fimbriata′s preferences for different types of prey are in the order: web spiders; jumping spiders; and insects. [ 28 ] : 337–339 These preferences apply to both live prey and motionless lures, and to P. fimbriata specimens without prey for 7 days ("well-fed" [ 28 ] : 335 ) and without prey for 14 days ...
The eyes of horseshoe crabs can detect movement but not form images. [17] At the other extreme, jumping spiders have a very wide field of vision, [ 16 ] and their main eyes are ten times as acute as those of dragonflies , [ 35 ] able to see in both colors and UV-light.
Phidippus audax are commonly referred to as "bold jumping spiders" or "bold jumpers". [8] The species name, audax, is a Latin adjective meaning "audacious" or "bold". [8] This name was first used to describe the species by French arachnologist Nicholas Marcellus Hentz, who described the spider as being, "very bold, often jumping on the hand which threatens it". [9]
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Plexippus paykulli is a species of jumping spider. [1] It is native to Southeast Asia, but now has a cosmopolitan distribution. In the United States it is commonly known as the pantropical jumping spider. [2] It is usually associated with buildings [3] and may be found near light sources catching insects attracted by the light. [4]