Latrodectus curacaviensis

Latrodectus curacaviensis, also known as the South American black widow, is a species of comb-footed spider. These spiders are recognized by an hourglass-shaped marking on their abdomen and are known for the venomous bite of the females.1

The black widow's web is a loosely organized mesh. They use a row of bristles on their hind legs to fling silk over ensnared prey, which typically consists of insects.1

While not aggressive, female black widows may bite to defend their eggs and young. Their venom contains a potent nerve toxin. Human bites can cause muscle stiffness, spasms, nausea, and difficulty breathing. Most people recover, but bites can be fatal to young children and the elderly.1

The South American black widow is found in the Lesser Antilles and South America, often living under logs, debris, and trash.1