Latrodectus hesperus

Latrodectus hesperus, commonly known as the western black widow spider, is a small but venomous spider native to North America. Recognizable by its shiny black body and distinct red hourglass marking on the underside of its abdomen, it tends to prefer dark, undisturbed areas. Its venom contains a neurotoxin that can cause pain, muscle cramps, and other symptoms in humans, though bites are rarely deadly. The spider is generally not aggressive and bites only in self-defense. Despite its reputation, the western black widow plays a beneficial role in controlling pest insect populations.