Black Widow Spider Facts
88Black Widow Spider Female
Characteristics
An adult black widow spider has a black shiny abdomen, with two red triangles underneath, the shape of an hour glass. It is very small about 1.5 cm not including the legs.
These spiders make their webs usually outside and in dark places. The web is often built close to the ground, near houses, or in garages.
Females lay about 300 to 400 eggs per cocoon, and about four cocoon's every summer.
The black widow spider is nocturnal, it hunts and moves about at night. It is a very dangerous spider. In fact its venom is 15 times more dangerous than that of a rattlesnake.
It is an invertebrate animal belonging to the arachnid family, to the class of the arthropods. We can count 8 to 10 species. Its bite can paralyze, even kill.
the Black widow spider female is about 15 mm, the male is smaller only about 7 mm. It has two eyes above the mouth and two hooks with which it injects its venom.
Bites Look Like This
The black widow spider bite
Reaction to a black widow spider bite, depends entirely on where the person was bitten. The venom of a black widow spider is particularly dangerous, because one cannot feel the bite when it occurs, and when the person discovers it, it is can already be infected. The bite is normally sensitive 48 hours after it occurs.
Symptoms of the black widow spider's bite are frequently fainting spells, difficulties in breathing and speaking, vomiting, a low pulse rate, and a cold body. These symptoms can last 4 to 5 hours before falling into a coma, and if no medical care is available death could ensue. The majority of people who have been bitten by a black widow spider have not died, but spent 2 to 5 agonizing days before recovering completely.
If you have been bitten by a black widow spider, stay calm, catch the spider if possible, to make sure it is identified by a specialist. Call a doctor or a hospital right away. We recommend that you apply an antiseptic lotion if you can.
Children under the age of 16 and older people over 60, and people with cardiac problems will probably have to remain in the hospital for a while.
Another Look At The Spider
More facts about black widow spiders
A black widow spider lives about 1 1/2 year. The male has a shorter longevity, only eight months maximum.
The black widow spider is an insectivore. It is found in tropical regions, in the United States, in Australia, and in several countries in Europe. It likes dry and grassy grounds.
Only the female is dangerous, it is recognizable to its bright spots under its belly. The most dangerous for humans is the American black widow spider. (Latrodectus mactans).
Generally, man is not on the spider's menu. About 15 species are dangerous, but bites leading to death are rare.
The silk that the black widow spider spin for its web is extremely strong. The threads of the web lay in a crisscross pattern making it a deadly landing for any insect. When an insect land on it the spider which was waiting for a prey in the center of the web, will feel the vibrations and rush towards the unfortunate victim. It will spin it on itself wrapping it in a silk coffin; there is no escape possible, as this spider is a feared hunter.
Black Widow Web
Black widows spider have redeeming value
Lest you should believe that such a dangerous little animal is rather worthless to human, it has its redeeming value.
A few years ago scientists in Chile isolated properties in the black widow spider's venom, that according to their study could treat naturally and without side effect, erectile disfunction. The drug has been tested on animals and reports say that it functions pretty much as would Viagra.
It would seem that the Chilean spider, offer a venom rich in possibilities as the scientists are reporting that it might have spermicidal properties. These properties do not seem to be present in the venom of black widows in other regions of the globe, said Chilean Dr Fernando Romero, head of the project.
Working for the Universidad de la Frontera Dr Romero has applied for a patent for his discoveries.
In 2007, another team of scientists at the University of California in the United States, have identified two major genes in the silk from the black widow spider. The properties of this silk, elasticity, resistance and lightness, would make it a good candidate for usage in such materials such as bullet proof jackets, and medical applications. Industrial production can be done by adding these genes to a bacteria which can synthesize the protein. The University has filed a patent application for an industrial application.
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I personally like spiders. They are like "dog in a cage" ... they sit in a corner catching "wandering" insects. From my experience they make one web and sit there. They never seem to bother me and I do the same. I have never encountered a black widow spider though ... I am not sure what I would do in that case.
I actually just saw my first black widow last week. Fortunately for me it was already dead so I did not have to worry about being bit.
Ok totally freaked out now...blah! ewww! creepy crawlies all over me...I HATE SPIDERS! Thanks for the info though!
i have had a blackwidow for about 6 months now and they are one of mother natures bad asses they are a trip to watch i have thrown bigger wolf spidrers , big praying mantis, potato bug and just about every thing eles i could find and shes killed them all the bitch is bad
If you catch a black widow and want to kill and mount it for a bug collection -- is it safe to do that or can you easily have venom injected into you while handling the dead black widow?
I hate spider.They look really awful and now I know that they're also poisonous.I never see this type of spider but when I see it,I'll run away immediately :p
Thanks for the advice
thanks for your valuable info . but what about the superstition of the huge spiders we see in tv and films is it true?
I have never heard of killer spiders before reading this hub. Nature is so wonderful with all these creatures. More and more people should be made aware of this information.
Thanks for sharing, now i will be more aware from that Black Widow Spider. Fortunately there are not many spiders in my country :)
I remember as a child in Idaho catching Black Widows in jars with my cousin. We knew they were dangerous - that was the draw for us I think! Thank goodness we never got bitten - might not have made it! Thanks for the hub - very well written and full of good information!
I didn't know that about the black widow. It will be interesting to see what other properties we may find in the venom.
whoa!well spiders are just plain creepy,i wouldnt ever wanna play or see them.hopefully i dont havee any where im living.i would be terrified to death. but as you said if we get biten by it,i assumer you mean that we wont die or anything right?cause im preetty freaked out right now!
Interesting facts. I like the fact that we can use the black
widow's silk threads to fortify helmets,vests and other strong materials.
The photos of the spider bites look painful, ouch!
spider are crazy i dont see why there pets
a very dangerous female!!! having 15 times more power than a snake to kill. watch your back, guys. this girl's no joke! i saw a black widow in baltimore aquarium one time, and ive not dated anyone since!!! HAHAHA!!!
i think you ppl did a great job with this info...now i know all about spiders...when i see a black widow...ill be scared out of mii mind nd ill panick...but i wont hurt it
had sex with a spider lol
I was bitten by one of these; on the leg. I felt really sick, feverish for a couple of days. Went to the doctor the day I realized I'd been bitten. Now all I have left is a light, round scar on my upper thigh. It certainly was uncomfortable.
that is stupid
great hub... we have these where we live too. A few brown recluses too, but mostly black widows
igotbit
Do any Black Widows have a "Blue Spot" instead of Red?????
Spiders terrify me and it is 100% irrational. I am a total arachnophobe. No other insect really bothers me in the same way. I would literally rather have to fight off a rabid dog than be anywhere near a spider. However, they do eat annoying flies and mosquitoes! So, besides my irrational fears, I will still give spiders their few dues.
I just saw a black widow in my garage, i sat down next to the web and watched it for 10 mins or so. This little beetle looking bug was in her web and I was lucky enough to get to see her spin him up! It was really awesome I felt like I was watching planet earth or something.
Thanks for the info. Now I know what to look for.
Hi Mireille,
About 6 months ago I found a little spider making a web under the lip of my bathtub in the corner near the floor. There was a little hole that it could escape to if disturbed. At the time I thought this is cool even though it was in my bathroom. So this may seem a little macabre but I started to actually get a little attached to it…weird huh?! Everyday a random fly would enter my home I would stun it and feed it to the spider, not knowing what kind of spider it was. Yesterday I found out by doing some research that it is a Black Widow and so now I am freaked out a wee bit. My friend said I should kill it but I can't do that, I want to trap it and transplant it somewhere far away. I am stuck and also since it is a little cooler here in LA she is staying kind of hidden away. I think she is anticipating me catching her:) Anyway any advise on what to do?
Also question for you do these spiders ever leave their web at night to look for food? I keep having thoughts of this spider walking through my living room:)
Help!
Thanks Mireille you put my mind at ease I know it sounds ridiculous to have this spider in my bathroom for so long. I just didn't mind it cause it was quite small 6 months ago and I found it so interesting to watch. I even clean up after it bizarre I know, it is after all in my bathroom. OMG I sound nuts :) Anyway I have some guys coming over tomorrow to do some work on my apartment so I am going to ask them to catch her and then I will release her somewhere dark and moist where she can live out her life and maybe I can get back to normal around here.
Hi, Mireille....
I was checking this hub for the info needed to recognize a black widow spider, but I'm a little leery now. Seems that some of you have them for pets. Not so sure about Ello. I guess it is whatever floats your boat. For my part, I'm going to kill the spider outside my door, black widow or not.
Hi Mireille.
Mission accomplished I could not go another day without taking action. I finally caught her and took her to a new home far from me. In the future I will have to abstain from keeping Black Widows as pets it's just not a good idea :)
Okay, I'm starting to be scared of this. But very helpful information. Don't black widow spiders build their webs or homes in dry places? Or is that outside? Anyways, I feel more alert in my house. Either in my bathroom, bedroom, or kitchen. Afraid to see a black widow spider. Even though, I live in N.Y. Should I watch out for it?
Great info here! I respect these critters, and whenever I find them around my house or shed, I re-locate them. I have noticed one under the eves of my house. I'm cool with that; she stays in her web and is eating a lot of insects, but there are some egg cases there. Does the mother spider eat the babies, do they take off after they hatch, or am I going to end up having 400 BW spiderlings soon??
Holy... I know we don't have those here but still! I Hate all spiders except the ones with the small body and huge leg's, the ones that stay on a corner and eat flies and butterflies!
Last night I saw a black widow, in person, for the first time. We have a table and chair set on our front porch, and my husband and I sit out there every night watching the kids play in the yard. I have been noticing a spider web from the chair I always sit in to the the house. For the past 4 days I have knocked the web down and cleaned it up....then the next day it is back. I walked out on the front porch last night around 10 and finally saw the culprit. As soon as I got close enough I could identify immediately that this was a female black widow. I yelled for my husband to bring the bug spray so we could kill it. They are very fiesty for sure...did not want to die right away. It tried to crawl around for about 3 minutes before it finally gave up. Now I am freaked out to say the least knowing that these things are around our home. I had been sitting on top of it for at least a week, and never even knew it!!!!!
A really informative hub. Staying calm after being bitten is great advice. Not sure I'd be able to do so. Or catch the culprit for identification.... But good to know.
Nice info on the black widow, saw one today at our churches summer camp!
scary stuff
im glad to have no black widows around here
I just saw (and killed) my first black widow spider. I was out of town for a few days, and it had built a massive web in my doorway. And it was just chilling in the web. It was beautiful, but I couldn't let it live. I wouldn't have been able to get past it and into my house!
And I gotta say. I'm a little freaked. I see brown recluses all the time. But black widows are so much scarier looking!
there is a large female in captivity and a few of us are enjoying her beauty (through a clear glass jar, tightly capped). We are opening her jar once a day for air, and have been feeding her crickets. She fascinating to watch. When first discovered, and incarcerated, what may have been the dessicated remains of her mate were in the web. So now we wonder if she has mated. Of course this is a torturous situation, as we are just observing and do not really intend to let her go...though as we grow more attached and entranced, we may take her out to the woods somewhere. Do you know of any websites with info for dietary needs?
Very useful information, thank you very much for sharing.... I myself love spider I have a beautiful Chilean rose tarantula funny how a year ago i used to be terrified of them until the day I held one.
Makes you wonder why a tiny spider that eats insects had a need to evolve vemon 15 times more potent than that of a rattlesnake.
Is the strength of black widow silk unique to black widows, or do all spiders have silk that is equally strong? I remember always hearing that spider silk is stronger than steel, but I've never heard it applied uniquely to black widows.
I have a phobia of spiders, maybe because I lived with them in my basement bedroom growing up. People that like spiders live in a universe I cannot fathom. Isn't it true that the female black widow eats the male after mating, or is that just a story made to scare little kids living in basements?
My brother was keeping a female black widow spider in what he thought was a spider proof container, and she had laid her 3 sacks of eggs, and when they started coming out of the sack, he promptly realized it was not spider proof and he got rid of the spider, however I am led to believe that some of the babies were still in my house. I am pretty sure I saw one in the bedroom today, where he had the container, what should I do. I was thinking abut bombing the room, or should I do the whole house?
In Australia we have Red Backs, which are a kind of widow spider, and they seem to be everywhere lately, in summer. Although the Brown House Spiders (another related one, but not so poisonous) are more common these days.
i think that these special types of spiders are very unique and that we ought totake care of them..............coming from a student at park forest middle
i love black widow spiders.... coming from a park forest middle student
i love black widow spiders.... coming from a park forest middle student
i totally agree with u on that one especially their life cycle.............coming from a parkforest student
oh so you go to pfm to alexis lewis
These things scare the crap out of me. Especially with a toddler and a small dog in the house. Last summer I found one on the corner of our french doors leading out to the backyard. I thought it was weird because that area of the door gets a lot of sunlight through out the whole day, and I thought they like dark areas. Then when we took the pool down a few weeks ago, my nephew spotted another one. So, creppy. But I read something about the black widows living in clusters? Is this true? Should I be expecting more visitors? If so, what is the best way to get rid of them? By the way, I WD-40'd the one on the doors, and my nephew stepped on the one by the pool, but if there's going to be more of them I need to figure out what to do with my daughter and dog always out in the backyard.
i think black widows are cool
My couins once got bitten by a black widow. He was crying.
A black wideo is very smaall. It can bit someone so hard they can start crying.The best spider I like is the black wideo. They mostly make their weabs in the dark
ok.I get it, some people like spiders, but do you realy
want to sleep with them? now i am breathing like a race horse.
5 in 5 days
I saw my first black wiow earlier this week,nd i live in the bahamas.I killed it.
when my dog and i was in the garden every day i look in the slide to see if i saw a web and once i saw a black widow making a web so then i called my dog and my dog came and broke the web and killed the spider
EWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWWW!!!
This is very useful information. I never knew about all this. Great Hub!
Great info here!
wow. No wonder i hate spiders. Can i ask something? can we roast and eat them because i love fried insects. Not sure about this one....
Is it normal to see a larger female widow kill and eat another female widow?
Here in the central coast of California we have them all over the place. One year I found a nest under a porch chair and extracted the female intact and kept her in a large jar with twigs. I fed her crickets from the pet store and let all the children watch her for a couple of weeks. Then one morning she looked really small. Low and behold she had laid a cocoon of eggs. After all the kids got to see the egg sack I killed them all with Raid. I don't like killing them but did it anyway. It was a real education for the kids who are now able to identify them and keep their distance.
I have been workijng at this house and seen the Widow in the corner of the window of the basement . I'm not real scared of spriders it's mostly the web that freaks me out . we seen that she had one egg . Three days later she had another egg . Was going to killer her , thought about it then was going to killer her and put in a jar . No could'nt do it . I have seen these widows before but this is the biggest I've ever seen . I damaged her eggs feel bad for it . but I now have her in a small jar with her eggs did'nt want her heart broke . Any how now what do I do with her ? Thought of giving her to the Zoo or something . But don;t want to let go of her she is so amazingly beautiful . She has an hour glass on her tummy that is almost like the shape of hearts , then a strip that goes toward her rear , with another big red dot .
WHAT SHOULD I DO WITH HER ?
This is very informative. Very useful.
I remember when I was a kid I saw this really large black widow, working on her web in front of my garage door. I got really freaked out, so I got the water hose and blasted at it for like a minute against the door. Poor spider!
I found one in my basement, hanging down the doorway into a storage room. If I would have done my normal routine, going downstairs with only the light from the hallway to guide me to the room I was going to, I would have walked right into her. Thankfully, I turned on the main light when I got into the basement. BUT, now I'm curious if I need to start watching for me? I've never, ever seen one until now.
That is my Halloween costume this year. Was looking for info on black widows. Nice to know that only the female is the dangerous one. Hope we don't have those here in Canada
Hello! Thanks for the info, very intersting. Last month I noticed a Black Widow living outside of my kitchen window. She was living behind the shutter attached to the wall. I would only see her at night. I couldn't kill her and I wouldn't let my boyfriend kill her either. My plan was to move her. Over the time she was here, I noticed her changing some. This sounds like a silly question, but do spiders look different when they are about to have babies? We ended up moving her last week, but this afternoon I noticed lots of little babies right outside of where she was staying. I am assuming they are hers, but is there anyway to tell? Not sure if I can move a bunch of babies but maybe hose them away. I hate to kill things, especially things that are smaller then me. I always feel that if they can be moved safely, why kill them? Silly I know. I really think they are hers, but I guess the question is, do spiders look different before having babies & how do I know if they are black widows when they are so tiny? Thanks!
Don't put a black widow or any spider in an insect collection because they are not insects - they are arachnids. They have eight legs and only two main body parts while insects have six legs and three main body parts. Almost all, if not all, spiders produce venom, but most won't or can't bite you (the mandibles or jaws are too week to penetrate skin). In the United States there are only a few that can bite you (namely the black widow, the wood recluse or fiddle back, the tarantula, and the giant wolf spider), but only the black widow and wood recluse have venom that will harm you. It is really difficult to get a tarantula or wolf spider to bite you, but I have been bitten by both kinds when rescuing them from children with sticks. The tarantula's bite is very similar to a wasp's sting as is the wolf spider's but a little numbness follows the initial pain. I taught science for thirty years before I retired and did field studies during most summers. I would strongly advise against keeping a spider for a pet, especially a black widow. Many people keep tarantulas as pets without realizing that a male tarantula will live about five years while a female tarantula can live for thirty-two years! Once they have been kept in captivity for a length of time, they lose the ability to hunt on their own. If you turn them out then, they are apt to starve. All spiders are beneficial to humans so I, personally, tolerate them where ever I find them - in my house or out. The black widow, however, I kill as soon as I find one. The wood recluse is the more common of the two spiders being present in almost all buildings including all those occupied by humans. Before you have you home or office sprayed for wood recluse spiders, be aware that the residual spray will do you more harm than the spider's bite and you will be killing other harmless-but-helpful spiders.
I have black widows in my backyard, in the garage. Which I try and kill every chance I get. I have a question: the newly hatched black widows, are they a white color? and do they have the same amount of venom as a full grown spider?
if a black widow falls in a pool but is still alive, and i take it out and kill it... would the black widow could have sprayed it in the pool??? I need to know fast.
scaredycat, the black widow does not spray out her venom; she injects it. Even if she were able to spray out her venom, it would amount to a tiny drop and would be immediately diluted by the water. I don't believe you have anything to fear from the water in the pool or (if you killed it) the black widow. If this is a wading pool or a swimming pool, you would probably have a great deal more risk from the inevitable urine in the pool. :-)
I remember while i'm watching tv there's a news that a whole town is coated by a huge amount of web. Its so scary but it is good to watch that kind of story about spiders.
I just woke up & Think i saw a black widow above my head i shit myself & Jumped up. It got off the bed by the pillows, Is this possible?
Mr. D., I suppose if one were to get really excited suddenly, then one might very well shit one's self. Having done that I should think that jumping up would be only natural - rather messy, but natural. As to the likelihood of the black spider having been a black widow, I rather doubt it. It is not impossible, of course. However, it is much more likely that the black spider on your bedroom ceiling was one of the jumping spiders (Salticidae) such as a bold jumping spider (Phidippus audax). The male bold jumping spider is black with varying amounts of white -some with almost no white- on their legs and body. These are hairy spiders grow to be half-an-inch in size and frequently move indoors during early fall through winter. They make my wife uncomfortable, but they are very good at taking care of the insects and other invertebrates that also move indoors about the same time. They are especially good at catching flies. We always keep bananas in the kitchen and there are the attending fruit flies. Once we get a bold jumping spider in the house, there are no more fruit flies. The bold jumping spiders and their kin are not a threat to humans other than perhaps startling a person. :-)
Sorry it wasn't on the roof, It was above my head E.G when i got up off the bed i saw it! It was by my head the whole time. I'm familar with black widows i've only saw pictures of them mind ya! LOL. I got really worried has i know they are poisionious & Their venom is 15 times stronger than a rattlesnake. I also have a baby girl who's 4 months!I soon got the missus & Baby to sleep in the front. It defo had two red marks on the back, But it wasn't really fat as black widows are!
Mr. D., If the spider you saw was not hairy and was glossy black with red marks on it, it very well could have been a black widow. If there was not web (a black widow's web is not a neat, tidy web), then the spider was moving to a new location and not a resident. Now, a black widow does not have to have a web or be on its web to bite someone. So, just because it may have been a transient does not mean you do not need to be careful. You certainly want to protect your four-month-old girl from the black widow, for a young child or an elderly person are the most at risk of the bite being fatal. I'm not suggesting you allow your wife or yourself to be bitten either.
Their venom is much stronger than the venom of the most poisonous of the rattlesnakes. While you are remembering this fact, remember also that most rattlesnake bites are not fatal. Indeed, if a black widow injected you with as much venom as a western diamondback rattlesnake (Crotalus atrox), an eastern diamondback rattlesnake (Crotalus adamanteus), or a Mojave rattlesnake (Crotalus scutulatus) -the three rattlesnakes with the most dangerous venom- then you would almost certainly die. However, remember also that the black widow is injecting a very tiny drop of venom designed to kill an insect similar in size to the spider itself or smaller. Admittedly, that is more venom than I want in me but not reason to move to another house. Be cautious, be wary, be careful and, if you see the spider again, smash it just to be on the safe side.
Thank You for your information! :)
I'm trying to find close-up pictures of what the mouth of a black widow spider looks like. Making a giant spider on my lawn out of PVC for Halloween.
Thanks, Janice M.
I just wanted to say thanks for all this great infermation because I had project for school and I chose black widows as my topic and out of all the websites I been to I would say yours was the best so thanks for all the infermation
i like the it
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omg i got bitten help!
Have had a Black Widow for several months as a pet. I keep her in a jar and feed her roaches and crickets. I understand many people are quite scared of spiders but me and my kids love watching her feed. They are very amazing predators. I am glad to hear she could live 3+ years.
Have had a Black Widow for several months as a pet. I keep her in a jar and feed her roaches and crickets. I understand many people are quite scared of spiders but me and my kids love watching her feed. They are very amazing predators. I am glad to hear she could live 3+ years.
I've handled a black widow before. As long as you remain calm and don't squeeze her she is calm.


































fastfreta Level 5 Commenter 2 years ago
Such good information. Here in Southern California, the spider population is out of control. I personally have spiders everywhere. Black widow spiders are common visitors to my home. Some of the info I never knew. Thanks for all of the research. Great hub