It doesn't. It has the red hour glass on its belly.
The black widow spider.
AnswerIf it is predominately black and has the red hourglass on the abdomen, it is a black widow. It is my understanding that the stripes denote either a male or a younger female. I have also seen black widows with red dots on the back. The black widow with spots on its back usually has thirteen and it is called a European Black Widow.
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.
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.
An hourglass
well if has this mar on it's back that i red and looks like an hourglass and it is black
Brown Widow Spiders. When the subject of dangerous spiders comes up, the average person usually thinks about the black widow spider. Their shiny black body with a prominent red hourglass marking on the underside of the abdomen is an image that readily comes to mind. Source: Google.com
It may be a Black Widow spider. They are very poisonous and it is probably best not to approach it if you are unsure of the species. Black spiders have a distinctive red "hourglass" shape on its back.
a red back looks almost the same. But doesnt have an hourglass shape. It has a red stripe on top of its abdomen.
it is a black widow. it is all black becausse only female black widows have the red mark on their back. this means that is a male black widow.
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.
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.