Genus Latrodectus is a group of venomous spiders found across the world. Commonly known as widow spiders, they are named for their habit of killing and consuming their male counterparts after mating. Some synonyms for the genus Latrodectus include black widow spiders, redback spiders, button spiders, and hourglass spiders. These names refer to the distinctive markings on the spiders' abdomens, which often feature a red or black hourglass pattern. Despite their fearsome reputation, widow spiders are generally not aggressive towards humans and only bite as a last resort. However, their venom can be dangerous, and medical attention should be sought if bitten.