Latrodectus mactans
spider
Quick Summary
Black widow spider
Female southern black widow (Latrodectus mactans) with her egg case (upper right).
The Latrodectus mactans, commonly known as the southern black widow, is a species of spider found in North America. While not considered aggressive, its bite can be dangerous due to a potent neurotoxin in its venom. The female, which is shiny black with a distinctive hourglass marking on her abdomen, is responsible for the bites. Symptoms can include muscle pain, cramping, nausea, and difficulty breathing, though most victims recover without serious complications. Bites can be fatal to very young children and the elderly.12
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