The term "black widow" refers to a group of venomous spiders belonging to the genus Latrodectus. These spiders are known for their glossy black bodies and distinctive red hourglass marking on the underside of their abdomens. Black widows are typically found in dark, sheltered areas and are more common in warmer regions. Black widow bites can be dangerous to humans, causing symptoms such as pain, muscle cramps, and nausea. However, fatalities are rare, especially with prompt medical treatment. These spiders primarily feed on insects, using their venom to immobilize prey before consuming it.