Class Arachnida, Order Thelyphonida, vinagaroon or whipscorpionVinegaroons

Scientific name: Mastigophora giganteus (Lucas)
(Uropygi: Thelyphonidae)

Facts: This is the only species of this order in Texas. It is rather large with adult body lengths of 40-80 mm. They have forward projecting mouthparts enlarged and formed into pinchers. They are predators with forward projecting claws. They are called vinegaroons because they can emit acetic acid (a main component of vinegar) from the base of the tail. This is used as a defense against predators. They are also called whip-scorpions because of the thin tail. They do not sting.

Vinegaroons are found only in the western parts of Texas.

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