Whipscorpions Look Scary But Cant Really Hurt You

Whipscorpions Look Scary But Can't Really Hurt You Whipscorpions look fiercely threatening, by some accounts. In truth, they may be the scariest looking creatures that cant actually do you much harm. They resemble scorpions, with enormous pincers and long, whip-like tails, but they lack venom glands entirely. Whipscorpions are also known as vinegaroons. What Whipscorpions Look Like Whipscorpions do look similar to scorpions but arent true scorpions at all. They are arachnids, related to both spiders and scorpions, but they belong to their own taxonomic order, the Uropygi. Whipscorpions share the same elongated and flattened body shape as scorpions and possess oversized pincers for catching prey. But unlike a true scorpion, a whipscorpion does not sting, nor does it produce venom. Its long, slender tail is likely just a sensory structure, enabling it to detect vibrations or odors. Although smaller than most true scorpions, whipscorpions can be impressively big, reaching a maximum body length of 8 cm. Add another 7 cm of tail to that, and youve got a big bug (though not an actual bug). Most whipscorpions inhabit the tropics. In the U.S., the largest species is Mastigoproctus giganteus, sometimes known as the mule killer. How Whipscorpions Are Classified Kingdom – AnimaliaPhylum –  ArthropodaClass –  ArachnidaOrder - Uropygi What Whipscorpions Eat Whipscorpions are nocturnal hunters that feed on insects and other small animals. The first pair of a whipscorpions legs are modified into long feelers, used for locating prey. Once a potential meal is identified, the whipscorpion grabs the prey with its pincers and crushes and tears its victim with powerful chelicerae. The Life Cycle of Whipscorpions For a creature with such a frightening appearance, the whipscorpion has a remarkably tender love life. The male caresses his potential mate with his front legs before presenting her with his spermatophore. After fertilization occurs, the female retreats to her burrow, guarding her eggs as they develop in a mucous sac. When the young hatch, they climb onto their mothers back, holding fast with special suckers. Once they molt for the first time, they leave their mother and she dies. Special Behaviors of Whipscorpions While they cant sting, whipscorpions can and will defend themselves when threatened. Special glands at the base of its tail enable the whipscorpion to produce and spray a defensive fluid. Usually, a combination of acetic acid and octanoic acid, the whipscorpions defensive spray gives off a distinctive vinegar-like smell. This unique odor is why the whipscorpion also goes by the nickname vinegaroon.  Be forewarned. If you encounter a vinegaroon, it can hit you with its defensive acid from a distance of a half meter or more. Other Types of Whipscorpions The order Uropygi isnt the only group of organisms known as whipscorpions. Among the arachnids are three other orders that share this common name, briefly described here. Micro Whipscorpions (Order Palpigradi): These tiny arachnids live in caves and under rocks, and we dont yet know much about their natural history. Micro whipscorpions are pale in color, and their tails are covered with setae that function as sensory organs. Scientists believe micro whipscorpions prey on other microarthropods, or perhaps on their eggs. About 80 species are described worldwide, although many more likely exist, still undiscovered.Short-tailed Whipscorpions (Order Schizomida): The short-tailed whipscorpions  are small arachnids, measuring less than 1 cm long. Their tails are (predictably) short. In males, the tail is knobbed so the mating female can hold onto it during mating. Short-tailed whipscorpions often have modified hind legs for jumping, and look superficially similar to grasshoppers in that regard. They prey on other small arthropods, hunting at night, despite poor eyesight. Like their larger cousins, short-tailed whipscorpions spray acid in defense but lack v enom glands. Tailless Whipscorpions (Order Amblypygi): Tailless whipscorpions are just that, and the name of their order, Amblypygi, literally means blunt rump. The largest specimens reach 5.5 cm in length and look somewhat similar to the larger vinegaroons. Tailless whipscorpions have strikingly long legs and spiny pedipalps, and they can run sideways at startling speeds. These features make them the stuff of nightmares to the easily spooked among us, but like the other whipscorpion groups, tailless whipscorpions are benign. That is, unless youre a smallish arthropod, in which case you may find yourself impaled and crushed to death by the tailless whipscorpions powerful pedipalps. Sources: Bugs Rule! An Introduction to the World of Insects, by Whitney Cranshaw and Richard RedakBorror and DeLongs Introduction to the Study of Insects, 7th edition, by Charles A. Triplehorn and Norman F. JohnsonSpecies  , Bugguide.net. Accessed online March 10, 2017.Mastigoproctus giganteus  - Giant Vinegaroon