Female black widow spider, Latrodectus mactans, in the process of spinning her web upon a tree branch. Note the characteristic red hourglass located on her inferior abdominal surface, which can vary in coloration from yellowish, to shades of orange and red, and at times, can even be white. The female's body is an overall shiny jet-black in colour. Human beings are bitten not as prey, but when a female spider feels threatened. Females are poisonous, injecting a potent neurotoxic venom, i.e., 15x more potent than that of the rattlesnake, when it bites its victim, while the male L. mactans is harmless. Though venomous, the quantity of poison is so minute that death is rare, though the bite is painful. |