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Spiders
Arachnida (Arachnids), with approzimately 39,500 identified species, are commonly known as spiders. All spiders are both carnivorous and venomous, but only a very small percentage are potentially dangerous to humans. Ask and answer questions here about these eight legged fascinating wonders.
6,012 Questions
Of what material are spider webs composed?
Spiders secrete a combination of proteins that they use to weave their webs. Some of the proteins create the silk and another protein makes up the sticky substance that traps the prey in the web.
Is a black widow spider a vertebrate or an invertebrate?
A spider is not a vertebrate, it is classified as an arthropod, this is a set of species that have an exoskeleton, a segmented body, and jointed appendages. This grouping also includes such animals as scorpions, centipedes, insects and crabs.
What kind of spider is brown with a white shield pattern on its back?
Is it a white orb? In that case it would be an egg sack. If it is actually a white spot it cold be a wolf spider. I am sure another user could provide a more detailed answer but I have seen wolf spiders with white spots.
it can not bite humans. however they can bite other small insects but because their jaws are so small they cannot bite larger insects, animals, or yes us.
Do all insects have 6 or 8 legs?
Yes, pretty much by definition. Obviously they can lose legs in accidents etc. but they come as standard with six legs.
What happens after spiders give birth?
they have 366 eggs they die from the pain but not all spiders die after have
baby's some spiders have 2,000 eggs and they don't die just small spiders die.
PS don't kill spiders they are just as scared of you as you are of them
don't harm a pregnant spider they are very aggressive when they pregnant if
you don't harm them they wont harm.
Hope i helped
What do wolf spiders do for winter?
The reason spiders do not get cold is because they are not warm blooded like other animals with fur. The "fur" that you see on tarantulas and other spiders is not really hair but "bristles" and has nothing to do with how a spider keeps warm. The "hair" on a spider is used for several reasons. The hairs on a spider sense vibrations and a spider can tell a lot about it's enviroment from what it senses in theses hairs. Some spiders, like many New World tarantulas can use some of their hairs for defense. These urticating hairs are itchy and when a predator comes to close they shoot these hairs to make the predator go away. So, back to your question, how do they keep warm? Well, spiders are cold-blooded (actually, their blood is called hemolymph and is different from reptiles, etc). Spiders are the same temperatures as their surroundings and different species are adapted for different surroundings. when they are cold they will move to a warmer spot and if they are cold they will move to a warmer spot. Some spiders lay their eggs in Fall and then die and their eggs hatch in Spring. Other spiders dig burrows deep in ground and stay there all winter. The spiders that live in your house live there because the temperature is comfortable to them. Some people find spiders in their house and put them outside. This is not really a good idea because house spiders are adapted to live inside and can't survive outside. But, it's good to have in your house because they eat all insects like roaches, etc. that might carry diseases.
Earwigs are vegetarians. They love fresh gardens and green leafy plants. You can safely use diatomaceous earth around your garden to help control them.
Where is the spiders eyes and mouth?
the Cephalothorax. The spider's eyes, mouth fangs, stomach, brain and the glands that make the poison are on this part of the body. The legs are connected to this part, as well. Most spiders have eight eyes, but some have less. Spiders also have these tiny little leg-ish things called 'pedipalps' that are beside the fangs. They help to hold prey while the spider bites it.
The second part of the body is called the Abdomen. The back end of the abdomen is where the spinnerets, the silk producing glands, are. The spider's body has an oil on it to keep the spider from sticking to it's own web.
Spider's legs are covered with many hairs. The hairs pick up vibrations and smells from the air. At the end of the legs are, at least, two small claws. Spiders have 48 knees. Yup, count them…eight legs with six joints on each.
Spiders do not have a skeleton inside their bodies. They have a hard outer shell called an 'exoskeleton'. Because it is hard, it can't grow with the spider. So young spiders need to molt, or shed their exoskeleton. The spider must climb out of the old shell through the cephalothorax. You can imagine how hard it must be to pull all those legs out! They are pretty helpless at this point. Once they are out they must stretch themselves out before the new exoskeleton hardens. This gives them a bit of growing room. As adults, they stop growing and do not need to molt.
Male spiders are usually smaller than females.
< PREV NEXT >Are all spiders and snakes poisonous?
No. The only poisonous watersnake in North America is the cottonmouth, otherwise known as the water moccasin.
Ok. Not only are cottonmouths not poisonous, they are also nowhere near the only venomous snake in North America. There are lots and lots of venomous snakes in North America. To answer the ask: no, water snakes are not poisonous and they are not venomous either.
Edit from Drake Tinker:
The north American cottonmouth or water moccasin IS poisonous. The snake is a semi-aquatic pit viper usually found near streams and slow-moving water locations, the snake is able to swim quite well, though and has managed to colonize many small islands along the south eastern coast of the United States and the Gulf of Mexico by swimming to the nearby islands.
They are not generally deadly, but because their venom is cytotoxic(meaning it destroys cells) which destroys tissue, they are a risk. An envenomed bite could cause severe tissue destruction which will leave large scars, and can sometimes require amputation - but that is rare. The venom does NOT contain neurotoxin like most American pit vipers, which reduces their deadliness.
When threatened or stressed, they usually coil themselves up with the head in the center of the coil, and display an open mouth which is very white, and how they got the name 'cottonmouth'. The tip of the tail will also often shake, even though they have no rattles to make noise. Young snakes are banded much like rattlesnakes, but as they age the bands darken, eventually becoming very hard to see, except near the edges of the snakes' belly. It should be noted that younger poisonous snakes generally have a much more potent venom and are also more likely to bite and use venom when attacking.
What is the white stuff that comes out a spider's butt?
Feces. It's probably more of a light gray than white in most cases. Some arboreal tarantulas squirt it at anybody who frightens them.
What kind of spider black body with four white spots and red legs?
That sounds like a common garden spider. They are a low-venom spider, usually shy and spin an orbital (round) web, the kind that are often photographed with dew on them. They live until first frost and are generally thought to be beneficial.
Are daddy long legs the most venomous spiders alive?
The term daddy longlegs is ambiguous.
In Canada, the United Kingdom and Ireland it refers to craneflies which are harmless insects.
In the United States and Canada it can also refer to a harmless arachnid harvestman (Opiliones, not a spider) and in Australia it usually refers to the cellar spider(Pholcidae). The latter does have a venomous bite but its effect on humans is minor.
The harvestman does not have any venom at all, let alone harmful toxins. If you don't believe me, check out spiderzrule.com or the Burke Museum website, among other reputable sources.
Arachnids are also classified by their chelicerae, which are the mouthparts. Opiliones ingest solid food particles via maceration due to the lack of venom glands, whereas Araneae inject digestive fluids through hollow chelicerae (fangs), and suck up the digested material through the same chelicerae.
question merged During 2004, the Discovery Channel television show MythBusters tested the daddy long-legs venom myth in episode 13 - "Buried in concrete". Hosts Jamie Hyneman and Adam Savage first established that the spider's venom was not as toxic as other venoms, after being told about an experiment whereby mice were injected with venom from both a daddy long-legs and a black widow, with the black widow venom producing a much stronger reaction
How did the crab spider get its name?
Over 700 different kinds of spiders live in Florida. The scientific name for spiders is "Arachnid" (uh-rack-nid). That name comes from an old Greek story. In this story, a girl named Arachne (uh-rak-nee) loved to weave. Her weaving was so beautiful and perfect that the goddess Athena got jealous. To punish Arachne, the goddess turned her into a spider. But Arachne still loved to weave, even though she was a spider.
Do spider webs attract insects?
Several insects spin webs, such as Silk Worms. There are also Embioptera more commonly known as "Web Spinners". Don't be confused by different types of webs like spiders (which are arachnids) use to catch prey.
Well not hear exactly being as they don't have any ears. They do have sensory nerves in the ends of their legs though and my observation of the spider shows that at times they wave the two legs in the front in the air as though searching the air for a vibration or a squeak from their mate. It is known that certain spiders emit a squeak audible to human ears. What is not known, I don't think, is if they emit a squeak that is inaudible to human ears. I do know, based on some experiments I have conducted, that the Argiope Appensa is not fazed in the slightest by high frequency emissions made from a computer program that was just barely audible to my human ears. If they do hear high frequency sounds it would have to be extremely high up there, and it is more than likely that they emit the same frequency or maybe their ancestors did. What I would do, had I the technology, would place a spider in a glass or plastic container along with some sort of frequency monitoring device and observe the thing. My hypothesis is that spiders do "hear" high frequency sound and that perhaps one day someone will factually prove that. There is a very informative paper I recently stumbled across on Google after typing in the question. Look for something titled "JSTOR: Reactions of orb-weaving spiders to airborne sounds." It will answer many people's questions. They talk about how spiders respond to sound and web agitation. It is a really wonderful paper and is done by Hubert and Mable Frings, who are animal sound experts. Biology teachers will love it!;) Another great place for spider information is arachnology.com. The site is amazing and includes research of scientists around the world. Another absolutely amazing spider scientist(arachnologist) is a man by the name of Friedrich G. Barth. He has written various books on this topic and I absolutely love his work.
Why are spiders webs called cobwebs?
The Old English for spider was atorcoppe (poison-head). The "pp" altered to "b" in the 16th Century and "cob" became a stand alone word for spider, still used in some English dialects into the 1930s.
Ergo cobweb = spiderweb.
What are the trapdoor spider predators?
They get their food by hiding in ground dwelling burrows. These spiders are one of the most sneakyist insects in the world. they get their food by living in their burrows and when any lizard or insect is near that thing is DEAD! but if it sees danger it quickly closes it burrow and hide.
What spider is Brown with light brown stripes on its back?
I bet that it is black widow does it have a straight red line or a an hourglass shape on its back? If it has a curvy line like an hourglass sort of shape then it IS a black widow. I am sorry but you still haven't given us enough information, so maybe ask again in more detail, or discription. Like size, fuz? Stuff like that... Then we will be able to answer better! Good Luck!
Possibly a male black widow or a juvenile of either sex. (they are usually brown with alternating light and dark leg segments). The males have some markings, but not usually an hourglass. The juveniles sometimes show an orange or yellow hourglass on the undeside of their abdomens. The black widows in our garage have a red and white stripe on their back, but on the underside of their abdomen (tummy) is the red hourglass. It helps in identification for a more detailed description. The hourglass is almost always on the underside, but some will have markings
Is a diamond stronger than a spiders web?
Pound for pound (or rather, microgram for microgram) spider silk has a tensile strength higher than high-grade steel, and about the same as Kevlar (the material used to make bulletproof vests).
The reason we can tear through a web is only because the individual strands are so thin. If enough fibers are woven together, a thread made of spider silk could easily suspend a car - and at a fraction of the weight of a steel cable of similar strength.
What is black spider with green dots on back?
One type of spider that is black with green markings is the jumping spider, which is found in North America. They are half an inch in length and can jump very long distances.
