Species Mastigoproctus giganteus - Giant Vinegaroon

Vinegarroon, Vinegaroon

up to 85 mm (>3")

Southern US

Carnivorous - preys on smaller creatures (insects, worms and slugs).

The vinegaroon is nocturnal and has poor vision. The whiplike tail is used as a sensory organ, as is the first pair of legs, which is not used for walking. Although its tail in unable to sting, this creature can spray an acidic mist from a scent gland at the base of the tail when disturbed. The spray is 85% concentrated acetic acid/vinegar, hence the common name "Vinegaroon." The heavy pinching mouthparts (modified pedipalps) can also inflict a painful bite. Although very unlikely to attack humans, it can certainly defend itself if provoked.

Texas A & M University species account

EnchantedLearning.com - diagram of bodyparts