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.
there is a poisonous spider called the black widow that has a black almost shiny looking body with a red "hourglass" shaped red splotch on their underbelly. if that spider is the one your are talking about...it is poisonous. if you need to see a pic to make sure just look one up in google images
If its black, has a large butt and there's a red shape on its back the resembles an hourglass, then its a black widow spider and they are very poisonous
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 a relatively small black seemingly hairless spider with a telltale red hourglass shape marking on its abdomen
It is a grass spider
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 entamologist would have to see it to give you an id. Part of it is counting it's eyes.
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
The Red Back Spider and the Funnel Web Spider (sometimes called the Sydney Funnel Web spider) are Australia's two poisonous spiders.
The Funnel Web spider is the most poisonous.
A poisonous spider can.