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Black Widow Spider

One of the most feared Spiders on earth, the adult female black widow has a bite that kills, though rarely. And it�s only her bite you need to watch out for; her mate isn�t poisonous. You�ll find these spiders throughout the world and in the United States.

She has a globe-shaped, shiny black body with a red or orange hourglass-shaped mark on her abdomen and is about 2 centimeters long. Younger females are sometimes brown. Male spiders are considerably smaller than the females, with only a small reddish dot on the abdomen.

The hour-glass bright colored shaped is supposed to say watch out I'm dangerous, or get away! to warnoff ant predatores

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12y ago
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14y ago

yes they do all have hour glass shapes on their bellies and that also goes for males as well

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14y ago

belly

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14y ago

yes they do

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Q: Do all female black widows have hourglass marking?
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Continue Learning about Zoology

What is the name of spiders that are black with a hourglass shape on they're underside?

The black widow is a shiny, jet-black spider with long legs and a red or orange hourglass-shaped marking on its underside. It is about an inch long, including the legs.


Where are black widows?

"Black Widow" is the common name of some Spiders in the genus Latrodectus. They are easily identified by the red hourglass marking on their abdomens. The black widows are highly venomous, and can be fatal to humans.


Why is the black widow called the black widow?

There are a number of spiders that show a variety of combinations of red and black. A Female Black Widow Spider is black, has a very round abdomen, and usually, but not always, has a telltale red hourglass shape on thethe underside of her abdomen, not her back. A female black widow is also very shiny--think patent leather. According to The National Audubon Society Field Guide to North American Insects & Spiders, the red marking may or may not be an hourglass shape; it can appear as two transverse red marks with black in between.According to http://www.termite.com/spider-identification.html#blackwidow, "The marking may range in color from yellowish orange to red and its shape may range from an hourglass to a dot."There are other black and red spiders--I'm looking at one right now--that are fuzzy and/or that display patterns different from those of the black widow. Also check out the following website for images of black widows and other spiders: http://bugguide.net/index.php?q=search&keys=black+widow&search=Search ------------------------- Long story short: Nope, the Black widow has a far more deadly venom.


Are black widows toxic?

yes, but only the male are. but the female black widow still bite and it really hurts


What kind of spider has orange and black stripes and is shaped like a black widow?

A male black widow has orange and black stripes. Heres my description of black widows. This is about both male and female black widow spiders. It is shiny and coal black in colour. The female averages 8-10 mm's in length and has long slender legs and a round abdomen. Usually on the underside of the female's abdomen is a red hourglass mark and one or two red spots over the spinnerets and along the middle of her back. The male is 3-4 mm's long with an elongated abdomen. The male's legs are larger then the females and each joint is orange brown and black on the ends. On the sides of the male's abdomen there are 4 pairs of red and white stripes. Young black widows are orange, brown and white. They acquire their black clothing with age.

Related questions

Are there black widows with no red marking?

no


Is there an hourglass on the bottom of black widows?

yes


What type of spider has a red thorax and black head and body?

A black widow. This spider is only a black widow if the entire spider is black, with a round-ball looking back-body, female variety if there is a red hourglass shape marking on the underside of the spider. From the top black widows are completely black.


Does a black widow have fur?

No, Black Widows are not hairy. The Black Widows body is very shiny black, with a red hourglass marking on its abdomen.


Do baby black widows have red dots?

The baby black have a similar shape as the adult, however there is a vast colour difference. The immature Widow Spider is much smaller than the adult and is yellow/brown in colour. The characteristic hourglass marking on its back is yellowish and not red. It is only after maturing and mating that the female spider takes on the sinister black body with red hourglass colouration on its back. The young juvenile black window spider does not have any red markings.


Why do the female black widows kill male black widows?

To feed the hatch lings


What is the black widows appearance?

The black widow is a medium sized, black spider with a red mark on its abdomen that has the appearance of an hourglass.


What do female black widows do?

she eats her husband


Are female black widows aggressive?

Female black widows are the spiders you'd see in pictures of black widows. The males are much smaller, do not even look like black widows, and are not dangerous. The females can be deadly but you'd have to really disturb one to get bitten. They're not like bees.


What kinds of important details does the black widow have?

One thing is they have an red hourglass's symbol on their abdomen. (Most female black widows have that, but not all.) They are found on almost every continent including this one (North America if you live here).


Do black widow spiders have any markings on their backs?

Yes, black widows are very deadly and is probably the most venomous spider in the world. Despite their deadly venom, there aren't much deaths per year by these spiders as long as humans get immediate medical intention.


Why do black widows have a red hourglass?

yes because of the chemical reaction when it hits human skin