Same goes for spiders BORN with less than 8. they are usually crippled and wont live ling if born with more or less legs. Alain Pasquet and colleagues noticed that more than 1 in 10 spiders caught in the wild are missing one of their eight legs, so they decided to see whether spiders with fewer limbs suffer any disadvantage when it comes to spinning webs: Based on the findings, the authors propose that spiders have legs that they don't really … They have a … 1 decade ago. One color: Some spiders have multi-colored legs, but loxosceles keeps it solid—no stripes and no patterns. They are the largest order of arachnids and rank seventh in total species diversity among all orders of organisms. The simple eyes, fangs, palps, and legs are all found on the anterior body region, called the cephalothorax.The spinnerets reside on the posterior region, called the abdomen. Why do we have 2 legs? some indeed use two of their legs as antenna but they are in fact legs. That's like asking why spiders have eight legs when insects do just fine with six. You will also see that it has two more structures like short legs, one on either side of the head; they are called pedipalps. Subject: Do all spiders have eight legs? Why do spiders have so many legs (besides giving us the creeps)? 1 Questions & Answers Place. Starting from the body end, these are the coxa, … No. Spiders have 48 knees. They have 8 legs and 2 mouth pieces that look like legs. ), some have compound eyes (think dragonflies). login or register to post comments. This means that spiders are not classified as insects. Any reference on spiders will have a description of the anatomy, but try: Barnes, R. D. 1987. Spiders are in the arachnid class, but not all arachnids are spiders. 8-legged spiders and 2-legged people survived and reproduced. What Are Spiders. Saunders College Pub., Philadelphia. A spider has 8 legs. Why do spiders have 6-8 legs? 3 0. krypto'nstreaky. Arachnids. As of 2019, approximately 120 families and more than 48,200 species of spiders have been identified. Spiders do not have a skeleton inside their bodies. 8 legs, 6 legs, lots of legs, some legs that have become antennae or claws or mating palps in males. The spider’s four pairs of legs are attached to the prosoma. Spiders are arthropods that have eight legs. Spiders typically have eight walking legs (insects have six). Find answers now! Spiders don't have specialized antennae, but they have various information-gathering devices on their various legs, such as special vibration-detecting hairs and (if I remember correctly) scent detectors. The upshot to having a multi jointed exoskeleton is that spiders don't have … One of the identifying features of all spider arachnoids is that they have 8 legs and no antennae. The appendage of a spider is whatever the spider wants it to be. Does having 8 eyes lend them an advantage over other animals? "...1. Spider’s legs are covered with many hairs. 1 decade ago. What are spiders? This large group of leggy animals also includes mites, ticks, and scorpions. Jun 19, 2004 #17 Originally posted by: apac "Hey Richard your car is getting towed" We all know that insects tend to have six legs and that spiders have eight. Humans only have one major joint per limb (knee, elbow, etc), but spiders have seven joints for each leg. In a word- yes! Here's one answer: Our ancestors - and the spiders' ancestors - with different numbers of legs didn't live and reproduce. At the end of the legs are, at least, two small claws. Jumping spiders, a group of spiders that actively hunts its prey rather than trapping it in webs, have four pairs of eyes (as do most spiders). Hunting spiders that have very good eyesight, during the day, include wolf spiders, jumping spiders, bolas spiders, and net-casting spiders. They have more legs and different body parts than insects, and they also don’t move around in the same way insects do. Spiders are arthropods from the class Arachnida that have 8 legs and fangs that can often inject venom. Their Bodies Have Two Parts . Step 1 : Introduction to the question "8. In some species, the front two legs have taken on sensory functions. Spider anatomy Spiders have the following basic features: Two body parts; cephalothorax and abdomen Eight legs Pedipalps (the feelers) Spinnerets (silk spinning organs) Eyes (6 or 8) Chelicerae (mouthparts) Fangs (connected to the chelicerae) Click on the diagram BELOW to see these features There are around 4000 species of spiders … 2 Spiders have eight legs. A spider's legs has 7 joints (Photo: Eky.edu). Most spiders use a web to catch their prey, which is usually insects. 1 decade ago. In some species, the pedipalps are large enough to resemble legs but are entirely different appendages. Do Spiders Have 8 Legs or 6? Anonymous. Each leg has claws at the tip—web-spinning spiders have three, all others have two—with thousands of small, flexible hairs covering them. The problem is that not just spiders have eight legs but other arachnids too! Rather, the eyes are fixed in place. Whereas legs and pedipalps (feelers analogous to insect antennae) still have several jointed segments, spider chelicerae are reduced to two portions, the basal block and the jack-knife fangs. They are found in all continents except Antarctica, and have established permanent colonies in every habitat except sea and air. They need these extra sets of eyes, as they do not easily catch their prey in webs — they hunt! A spider needs so many eyes because it cannot twist its cephalothorax ("head") to see. Spiders' legs are made up of seven segments. Yup, count them…eight legs with six joints on each. Why Spiders Have So Many Eyes . Legs. I sincerely hope nothing like that exists. If you find these leg characteristics similar to your spider then look into its eyes, all six of them. How many pairs of legs do all spiders have? Relevance. There are about 40,000 known species of spiders. That's just how they evolved to fill their respective niches. Contributed by MaggieP on 14 May, 2014 - 6:28pm Last updated 19 May, 2014 - 12:12pm. Scientists may have uncovered why spiders are so creepy-crawly—they have more legs than they actually need, a new study says. Same with eyes; some arthropods have fewer than others; some have simple eyes, some have complicated (like "higher-animal") eyes (the large main eyes of Jumping spiders are really marvelous! 4 4. Spiders (order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. : When it comes to spiders, one of the characteristics that set them apart is the number of legs they have. 1 0. 1 3. Answer Save. Dec 20, 2002 235 0 0. level 2. Telemidae, Cicurina, and Kauaʻi cave wolf spider are all examples of eyeless spiders. J. JackHomer Senior member. 12 Answers. 3 2. Question Date: 2017-09-11: Answer 1: Why do spiders have eight legs? They do not have antennae; the pair of appendages in front of the legs are the pedipalps (or just palps). Insects have only six legs. These spiders will use their main eyes for basic vision (with sharp, colored vision that allows them to see ultraviolet light that humans cannot see). 5 years ago. Like all spiders, this golden silk orb weaver, photographed in Shark Valley, is an arachnid and has eight legs. Do spiders have legs 8 feet long? If your spider doesn't have these legs then it's definitely not a brown recluse. All spiders (except those in the obscure family Uloboridae) inject venom through the hollow fangs to kill their prey, which includes enzymes that start to liquidise the food. Spiders are arthropods that belong to the class Arachnida, which is composed of joint-legged invertebrates that include spiders, scorpions, ticks, mites, solifuges, and harvestmen.They are all characterized by having eight legs. All spiders, from tarantulas to jumping spiders, share this common trait. Why do spiders have eight legs? Many different species of spiders, especially jumping spiders, have four sets of eyes. Spiders have eight legs with seven segments: the coxa, trochanter, femur, patella, tibia, metatarsus and at the end, the tarsus. That would be slightly terrifying. From the innocent daddy longlegs to the harmful brown recluse, here are the most common house spiders, how to identify them, and when to worry about a bite, according to entomologists. Anonymous. Insects only have 6 walking legs, but they have 2 specialized information-detecting legs that we call antennae. Invertebrate Zoology, 5th ed. In order to hunt and evade predators, spiders need to be able to sense movement all around them. if a spider has more (which is unlikely) then you can call it a genetically misshapen spider. NPS photo by Sarah Zenner. Occasionally they loose a leg or more, but they all start out with eight legs. Eyes or no eyes, all spiders must have a different way of observing the world. Favourite answer. No, but they have 8 legs. Date: Fri Jun 23 03:05:20 2000 Posted by ERIK KEENE Grade level: 4-6 School: American Hertiage Christian School City: Hayward State/Province: Ca Country: United States Area of science: Zoology ID: 961743920.Zo 3. Spiders, scorpions, mites, ticks, whip scorpions, and pseudoscorpions are all … All spider species are called arachnids because they belong to the class of animals called Arachnida. Spiders don't have this same movement. The unsegmented abdomen attaches to the cephalothorax by means of a narrow pedicel, giving the spider the … In the male the tips of these structures are swollen and he will fill these with semen before setting out to find a female. Over the years, more spider species with no eyes have been discovered in different parts and caves of the world. The hairs pick up vibrations and smells from the air. Moved.