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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).
Spiders do not have compound eyes, but instead have several pairs of simple eyes with each pair adapted for a specific task or tasks. The principal and secondary eyes in spiders are arranged in four, or occasionally fewer, pairs. Only the principal eyes have moveable retinas. The secondary eyes have a reflector at the back of the eyes.
Spiders also have several adaptations that distinguish them from other arachnids. All spiders are capable of producing silk of various types, which many species use to build webs to ensnare prey. Most spiders possess venom, which is injected into prey (or defensively, when the spider feels threatened) through the fangs of the chelicerae. Male ...
Telemidae, also known as long-legged cave spiders, is a family of small haplogyne spiders. Most are cave dwelling spiders with six eyes, though some do not have any eyes at all. There are about 104 described species in sixteen genera. [1]
The original version of the game, now called Minecraft: Java Edition, is still modded this way, but with more advanced tools. Minecraft: Bedrock Edition, a version of the game available for mobile, consoles, and Microsoft Windows, is written in C++, and as a result cannot be modded the same way.
With so many kinds of eight-legged bugs running around (nearly 3,000 species in North America alone!), the most common house spiders are bound to pop up in your abode from time to time. And with ...
Forest Spiders of South East Asia: With a Revision of the Sac and Ground Spiders. Brill Publishers. ISBN 978-9004119598. Eaton, Eric R.; Kaufman, Kenn (2007). Kaufman Field Guide to Insects of North America. Houghton Mifflin Harcourt. ISBN 978-0618153107. Filmer, Martin R. (1991). Southern African Spiders: An Identification Guide. Random House.
Spiders have woven their way into the mystical traditions and spiritual beliefs across cultures for centuries. These eight-legged architects of the natural world hold deep symbolic meaning beyond ...