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Small glossy black spider with red marking on dorsal and ventral surfaces. Marking on ventral abdomen is usually in the shape of an hourglass.
The black widow spider prefers dark, undisturbed areas such as deep insider closets or garage corners. This individual was found under the toilet lid of a long-abandoned campsite.
The black widow is one of two spiders of medical significance in Oklahoma. Its venom is neurotoxic, though rarely fatal.