As our community continues to recover from recent storms, find helpful resources and information at tiny.cc/ufsaraext_disasterprep, tiny.cc/saraco_disasterprep, and scgov.net/government/emergency-services/storm.

This blog is part of a multi-part series. To meet other members of “The Spooky Bug Brigade,” visit our blog’s landing page.

Whip Scorpions (Uropygi)

Description

Although these unusual arachnids closely resemble scorpions, they are missing a very important feature – the scorpion’s iconic stinger! Instead, they have a thin, whip-like “tail” at the end of their abdomen that serves as a sensory organ. This has earned them the common name “whip scorpion.” These creatures are rather large and have an intimidating appearance. However, they do not produce any venom. Instead, they rely on other means of defense. They are not known to be dangerous to people and are actually rather interesting creatures. The most common species found in the United States is the giant whip scorpion (Mastigoproctus giganteus), but also common is the Florida whip scorpion (Mastigoproctus floridanus), which is endemic to our state.

Their enlarged pedipalps, which have the appearance of forelegs, are modified to capture prey. They can also provide a painful pinch to a person when mishandled. Their front legs are thinner than the others and help whip scorpions sense their environment, acting almost like antennae. This helps supplement their poor vision. They have eight eyes found in three clusters around the head.

Some whip scorpions can live up to seven years! Their longevity and low maintenance requirements make them an interesting and unique choice for a pet.

Services

Like many of the arthropods already mentioned in this series, whip scorpions are incredible predators. They eat a variety of insects, including beetles, ants, flies, crickets, cockroaches, and termites. They are also known to occasionally feast on slugs and worms. Beyond keeping pests in check, whip scorpions can also be considered food for wildlife, such as raccoons and armadillos.

Habitat

Though uncommon, there have been reports of whip scorpions in several Florida counties, including Sarasota County. Their preferred habitat includes under rocks, logs, boards, and other sheltered, damp areas. They tend to be more active during the rainy season, when there is abundant moisture in their environment. If you want to encounter a whip scorpion, your chances are higher at night, when they are mobile and hunting for prey.

Fun Fact

Whip scorpions are often referred to as “vinegaroons,” as they spray acetic acid when disturbed. Acetic acid is one of the key compounds found in vinegar! Although it is highly concentrated, this spray does not pose a health risk to humans. However, it can still be irritating to the skin.

If you happen to find yourself on the bad side of a vinegaroon, avoid contact and keep your eyes at a safe distance away from the subject. If sprayed, promptly rinse your skin with soap and water to neutralize the effects of the acid. Watch the whip scorpion’s defense in action below!

Learn more about whip scorpions by clicking here.

Resources

• UF/IFAS Featured Creatures: https://entnemdept.ufl.edu/creatures/
• UF/IFAS Insect ID Lab: https://entnemdept.ufl.edu/insectid/
• IPM Florida: https://ipm.ifas.ufl.edu/
• UF/IFAS Extension Sarasota County, Chemicals in the Environment: https://sfyl.ifas.ufl.edu/sarasota/natural-resources/chemicals-in-the-environment/

Credits

• Featured image: Cristina Carrizosa, UF/IFAS
• Photos: Credited in caption
• Graphics: Designed in Canva

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