What is a poisonous spider that has a red hour-glass marking called?

Red hour glass spider?  Red spider bites poisonous?  What is a red spider called?  Is there a red flower called spider?  What is a spider with red hour glass?  What kind of poisonous spider has a red hourglass marking?  I have a spider that is black shaped like a tunnel web spider and has a small red spot on the back looks like a sidways hour glass. What kind of spider is it?  Spider that is black shaped like a tunnel wed sider and has a small and has red spots to back looks like a sidways hour glass What kind of spider is it?  What the black a spider?  What do redblack spider eat?  Black spider with hour glass on back?  What kind of spider has red spot on back?  What kind of a spider is black with a red dot?  What kind of black spider has red spot on back?  What poisonous spider that has a red hour-glass marking called?  What is the name of the spider that has a hourglass on it's back?  What kind of spider is brown with two red or orange triangles on its back?  What poisonous spider can be identified by a small red hourglass-shaped marking on the underside of its abdomen?