Last updated: May 27, 2024
Verified by: AZ Animals Staff
© davemhuntphotography/

Vinegaroons can spray 19 times before the glands are depleted


Vinegaroon Scientific Classification


Read our Complete Guide to Classification of Animals.

Vinegaroon Facts

Insects, millipedes, spiders, small amphibians, slugs, worms, isopods
Name Of Young
Nymph, scorpling
Group Behavior
  • Solitary
Fun Fact
Vinegaroons can spray 19 times before the glands are depleted
Estimated Population Size
Conservation status not evaluated. Their populations may be somewhat under threat.
Most Distinctive Feature
Its frightful looks
Other Name(s)
Whip scorpion, vinegarone, grampus
Gestation Period
A few months
Litter Size
30 to 40 nymphs
  • Solitary
Common Name
Number Of Species
United States, Africa, northern South America, the Caribbean, Central America, Asia

Vinegaroon Physical Characteristics

  • Brown
  • Black
Skin Type
Seven years and even more if given proper care
0.44 ounces or less
1.0 to 3.3 inches
Age of Sexual Maturity
4 years

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“A scary-looking, but a harmless, cousin of the spider.”

With 120 species in 16 genera, the vinegaroon, or whip scorpion is found in the warmer places of the world save Australia and Europe.

Admittedly, it is not everyone’s favorite animal and, if scaled up to be about as big as a horse, would be a great model for a rampaging alien life form in a horror movie.

But the whip scorpion is docile, at least with humans, and an efficient destroyer of bugs that really do cause problems. Read on for more information about this animal.

Five Incredible Vinegaroon Facts!


Acetic and caprylic acids are the main ingredients in the spray the vinegaroon utilizes to protect itself. The animal gets its name from acetic acid, which also gives the spray a vinegary stench.


Here are some interesting things to know about the Vinegaroon, otherwise known as the Whip Scorpion:

  • The spray the vinegaroon uses to defend itself is made up of acetic and caprylic acid. The acetic acid gives the spray a vinegary smell and gives the animal its name.
  • Some people do keep giant vinegaroons as pets, for they are nonvenomous and peaceful.
  • Vinegaroons have eight eyes, but their eyesight is bad.
  • The whip scorpion is not an insect. It is an arachnid that is related to spiders and, distantly, to scorpions.
  • Female vinegaroons provide considerable maternal care. After mating, they retreat to a hidden location where they are gravid for some months. Later, they lay 30 to 40 eggs which they brood for another two months. When the nymphs hatch, they ride on the mother’s back until they’re about a month old and independent. The mother does not eat the whole time.

Evolution and Origins

Arachnids known as vinegaroons also referred to as whip scorpions, are believed to have evolved around 350 million years ago in the warm, humid environments of the Carboniferous period. Many species of vinegaroons are still present in these places today.

These arachnids can be observed in arid habitats such as deserts in the southwestern United States and Mexico, as well as in grasslands and scrublands in Florida, and they have also been found at elevations of up to 6,000 meters in dry mountainous areas.

Even though vinegaroons have a body shape similar to scorpions, with a flattened, elongated abdomen and spiny, claw-like pedipalps (the pincer-like appendages in front of their face), they are not closely related to scorpions.

Species, Types, and Scientific Names

Vinegaroon Carrying Eggs

Thelyphonida order and Thelyphonidae family are the groups to which vinegaroons belong.


Vinegaroons belong to the Thelyphonida order and the Thelyphonidae family. Thelyphonida is Greek and probably means “female creature who murders.” It’s true that vinegaroons certainly murder their prey, but it’s not just the females who do so. They are also classified as uropygids, as uropygid is Ancient Greek for “tail rump.” This describes the thin and flexible tail of the animal.

There are 16 genera. They are:

  • Etienneus
  • Ginosigma
  • Glyptogluteus
  • Hypoctonus
  • Labochirus
  • Mastigoproctus
  • Mayacentrum
  • Mimoscorpius
  • Ravilops
  • Sheylayongium
  • Thelyphonellus
  • Thelyphonoides
  • Thelyphonus
  • Typopeltis
  • Uroproctus
  • Valeriophonus

The latest of these, Sheylayongium was described in 2018. The one species, Sheylayongium pelegrini is a whip scorpion native to the Antilles. There are 120 species of vinegaroon, including the giant vinegaroon, whose scientific name is Mastigoproctus giganteus. It is the only whip scorpion found in the United States.

Vinegaroon vs. Scorpion

It is understandable if a person mistakes a whip scorpion for a regular scorpion. They do look somewhat alike. The most important difference is that the scorpion has a curved, segmented tail with a stinger at the end. In some cases that stinger can deliver dangerous venom.

Though the vinegaroon has a whiplike tail, it does not have a stinger. The vinegaroon is not at all venomous even though it famously sprays acid that smells of vinegar, and the larger ones can bite and pinch with their pedipalps.


Vinegaroon on a green leaf
Found in warmer parts of the world, the vinegaroon likes to hide under rocks, shrubs, and rotting wood.


A whip scorpion is a black or brown creature between 1 and 3 inches long. Starting at the beginning, there are the pedipalps, which have evolved into large claws. The pedipalps of the male vinegaroon are larger than those of the female and in the giant vinegaroon, each pedipalp sports a movable finger.

The first pair of front legs have been modified into sense organs, and the other six legs are used for walking and running. These running legs are made up of a trochanter, a femur, a patella, a tibia, and a tarsus. Each tarsus ends in two claws.

Unlike a true bug, the whip scorpion’s body is divided into two instead of three parts. There’s the prosoma, which encompasses the animal’s head and the middle of its body, and the opisthosoma, which is the abdomen. Both sections are oval-shaped and flat.

The whip scorpion has two eyes at the front of the head and three eyes on each side. The tail is long and flexible, and the acid spraying gland is found at the base of it.


Giant Whip Scorpion

Warmer regions of Asia, South, and Central America, and the United States are home to vinegaroons.

©Guillermo Guerao Serra/

Vinegaroons are found in the warmer parts of Asia, South and Central America, and the United States. To look for one, look under rocks, fallen trees, rotting piles of wood, or maybe compost piles. M. giganteus is sometimes found in the deserts of the American southwest, though it burrows underground if it becomes too hot and dry. Vinegaroons can also be found hiding in crawlspaces or anywhere that is dark, warm, and damp.


Vinegaroons are carnivores and hunt for prey at night. Because they use their front legs and their tails as sense organs, they do not need to have good eyesight. When they find prey they grab it in their pedipalps and bring it to their jaws to eat it. Prey includes worms, slugs, cockroaches, crickets, termites and other insects, smaller whip scorpions, and spiders.

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About the Author

Rebecca is an experienced Professional Freelancer with nearly a decade of expertise in writing SEO Content, Digital Illustrations, and Graphic Design. When not engrossed in her creative endeavors, Rebecca dedicates her time to cycling and filming her nature adventures. When not focused on her passion for creating and crafting optimized materials, she harbors a deep fascination and love for cats, jumping spiders, and pet rats.

Vinegaroon FAQs (Frequently Asked Questions) 

Are vinegaroons dangerous?

Vinegaroons are not dangerous in the way that very venomous scorpions or spiders are dangerous. The acid that they spray can cause irritation, especially if it gets in the eyes, and the larger whip scorpions can bite and deliver a pinch with their pedipalps. However, they don’t usually attack humans.

How many legs does a vinegaroon have?

Vinegaroons have eight legs, though they only use six to get around. The other two have evolved into something like antennae and are called antenniform legs.

How do you identify a vinegaroon?

You can identify a vinegaroon if you find a black or dark brown creature that looks like a cross between a spider and a scorpion. It has large pedipalps, or claws, and eight legs, though the front legs are used more like antennae. It also has a long, thin tail, though the tail doesn’t have a stinger. A whip scorpion rarely grows more than 3 inches long but its robust body makes it look larger than it is.

How do you get rid of a vinegaroon?

You might think twice about getting rid of a whip scorpion you might find somewhere on your property because this animal is peaceable toward humans and a robust devourer of bugs such as cockroaches and termites. It eats slugs, which are garden pests, and even eats bark scorpions, which can be truly dangerous. But if you really can’t stand the sight of a vinegaroon, call a professional insect exterminator.

Are vinegaroons poisonous?

Vinegaroons are not poisonous or venomous, though they can pinch and bite if they feel threatened.

What is the lifespan of a vinegaroon?

Vinegaroons have a long lifespan for arachnids. They can live seven years or longer if an owner takes good care of them.

Are vinegaroons good pets?

Vinegaroons are good pets in that they are rather docile, and adults do not have a fussy diet. Giant vinegaroons can be purchased. However, it is challenging to care for whip scorpion nymphs as they need a specific environment in order to grow.

Where do you find vinegaroons?

If you live in a place that has a warm climate, a good location to find a whip scorpion can be under a rock, a pile of rotting wood, or under a log in the woods. Sometimes you can find a hole in the ground with a little pile of soil beside it that might be a whip scorpion’s burrow.

Do vinegaroons eat scorpions?

Vinegaroons do eat scorpions, especially small scorpions called bark scorpions. These animals are found in the Sonoran Desert that lies in the American southwest and Mexico.

What is a vinegaroon?

A vinegaroon is an arachnid, which means it is a relative of spiders and scorpions. It has a flat body, eight legs, a pair of “claws” and a whiplike tail.

What does a vinegaroon look like?

A vinegaroon looks much like a scorpion, though its tail is long and wiry and its body is flat, with two sections. Its first pair of front legs act as antennae and its pedipalps are much more robust than those of a scorpion, especially in males.

When do vinegaroon molt?

Vinegaroons tend to mold once a year, during the summer. Yet, it takes them a while to prepare for the molt. They’ll close themselves up in a chamber to wait. When a whip scorpion is born, it’ll undergo four molts before they’re mature.

What are the key differences between a vinegaroon and a scorpion?

The most significant differences between a vinegaroon and a scorpion are their size and appearance. Other differences include habitat, mating behavior, venom, litter size, and lifespan.

Thank you for reading! Have some feedback for us? Contact the AZ Animals editorial team.


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  3. KidAdl / Accessed October 13, 2021
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  5. Green Valley News / Accessed October 13, 2021