This MAHOOSIVE species can grow up to 15cm inc. tail. They have six legs used for movement, two long, thin front legs that they use to feel around for prey and detect vibrations, and two large pedipalps modified into claws that they use to crush their prey. They have a long, thin, whip-like tail, the origin of the common name whip scorpion. From the base of this tail, they can spray a substance composed of 85% acetic acid in order to defend themselves. Acetic acid is the main component of vinegar, so the spray smells strongly of vinegar, leading to the common name “vinegarroon”.
Mastigoproctus giganteus have eight eyes: two in a pair on the front of the head and three on each side of the head. These eyes are very weak, so Mastigoproctus giganteus navigates mostly by feeling with its long front legs, tail, and pedipalps.
The colour of the this species varies depending on original locality. They vary from a beautiful bright orange colour to tan with a starburst pattern covering its body. It is very interesting in both its behaviour and habits. Not a beginners species but definitely one of those species you need to keep sooner or later. They do not require high humidity and can be kept on slightly moistened substrate with a water dish. They are best kept in a terrarium that is set up with both arboreal and terrestrial hides. If given enough substrate they may even dig a burrow. They are very heavy webber’s and will not only cover a dense layer of web over their retreat but also over the entire enclosure, establishing elaborate silken tunnels. Care needs to be given when moving them and maintaining the enclosure as they are very fast and will not hesitate to bite or escape.