Scorpions

Scorpions (order Scorpiones) are predatory arachnids with eight legs, a pair of grasping pincers and a narrow, segmented tail, often carried in a characteristic forward curve over the back and always ending with a stinger. The evolutionary history of scorpions goes back 435 million years. They mainly live in deserts but have adapted to a wide range of environmental conditions, and can be found on all continents except Antarctica. There are over 2,500 described species, with 22 extant (living) families recognized to date. Their taxonomy is being revised to account for 21st-century genomic studi

The Chactidae are a family of scorpions established by Reginald Innes Pocock in 1893. They are included in the superfamily Chactoidea.

Cheloctonus is a genus of scorpions in the family Hormuridae. Scorpions in this genus are not believed to be medically significant.

species of arachnid