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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 median eyes have excellent night vision, allowing them to cast nets accurately in low-light conditions. These eyes are larger than the others, and sometimes makes these spiders appear to only have two eyes. Ogre-faced spiders are the best known genus in this family. The name refers to the perceived physical similarity to the ...
The dark blue, teal, and gold tapetum lucidum from the eye of a cow Retina of a mongrel dog with strong tapetal reflex. The tapetum lucidum (Latin for 'bright tapestry, coverlet'; / t ə ˈ p iː t əm ˈ l uː s ɪ d əm / tə-PEE-təm LOO-sih-dəm; pl.: tapeta lucida) [1] is a layer of tissue in the eye of many vertebrates and some other animals.
“Spiders are beneficial bugs that help control other pest insects such as flies, adult mosquitoes, ants, etc.” Capture and release can look like using a cup and a piece of paper to capture and ...
In some Eastern traditions, the spider takes on the symbolic role of illusion itself. "In Hindu and Buddhist tradition, the spider is connected to illusion. Think 'web of illusion,'" Popescu explains.
In noct-diurnal spiders, meaning those active during both the day and night, the blue eye cells have been found to be most responsive to circadian systems. In the nocturnal Araneus ventricosus , it has then been found that their anterior median eyes are able to change sensitivity in accordance with their circadian rhythm, meaning that the ...
Christmas Elf Maze. This easy, printable maze is great for a last-minute Elf on the Shelf idea. All you need is a printer, paper, and ink. Plus, the maze will flex your little one's brain, keeping ...
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]