The spider you are describing is mainly found in Australia. Its called a red back. Very Very Poisonous.
Black widow
Black House Spider is similar to one I found with diamond like shapes on their back. They're about 1/2 inch in body length, with long noticeably hairy legs. Semi-venomous, not fatal to humans.
A black widow spider is black with a red mark on it's abdomen; this might or might not be what you meant. The black widow sometimes has a red mark on her back, as well. The red backed spider of Australia, a relative of the black widow, has an orange red mark on the back.
Spider is light brown with gold or yellow diamond back
The tan and black spider with horns on its back is the Arrow-shaped Micrathena. These spiders spin their webs in spirals and hang in the center of the web, often mistaken for a piece of wood or leaf.
a black spider
black window spider images
Black Spiders was created in 2008.
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.
The address of the Black Diamond Library is: 24707 Roberts Drive, Black Diamond, 98010 M
Black house spider was created in 1872.
Black spider monkeys eat Orchids