hour glass
It is black, and has a red hourglass-like shape on its abdomen.
A black widow is a a relatively small black seemingly hairless spider with a telltale red hourglass shape marking on its abdomen
black widow
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 black widow is a deadly spider. A black widow also has a red hourglass-shaped mark on her abdomen.
The spider you are referring to is likely the black widow spider. The female black widow has a distinct red hourglass shape or white crescent on its abdomen. They are known for their venomous bite, so caution should be taken when encountering them.
The spider you are referring to is likely the Black Widow spider (Latrodectus mactans). It is known for its shiny black body with a red hourglass shape on the underside of its abdomen. It is important to exercise caution around this spider, as its venom is potent.
A "Black Widow" has a red hourglass shape on the underside of its abdomen, but it isn't impossible to spot a spider with the infamous red mark on its upper abdomen, that would make it a "Red-Back Widow," which is found only in Australia (unless something has gone horribly wrong!) If you don't live in Australia, it is most likely a "Northern Black Widow" which has several variations in the location and size of the red mark, usually small spots or the hourglass shape. If neither of these is the spider you're asking about, consider the hairy jumping spider, "Whitmani" The female is black or dark gray with a bright red abdomen
The black widow spider.
The black widow is a medium sized, black spider with a red mark on its abdomen that has the appearance of an hourglass.
I was looking very conspicuous with my mismatched clothes and purple hair. A black widow spider has a conspicuous red hourglass shape on its abdomen.
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.