Pseudochactas is a genus of scorpions within the family Pseudochactidae, first described by Alexander V. Gromov in 1998. This genus is notable for its distinctive morphological features and its status as a "living fossil" due to its unique evolutionary lineage.
The genus Pseudochactas comprises two recognized species:
Pseudochactas scorpions exhibit several unique morphological traits that distinguish them from other scorpion genera. Notably, they possess a distinctive trichobothrial pattern on their pedipalps, which does not conform to the fundamental patterns observed in other scorpions. Additionally, they display a combination of characteristics shared with both buthid and non-buthid scorpion families, contributing to debates regarding their phylogenetic position.
Species of Pseudochactas are found in Central Asia, specifically in southeastern Uzbekistan, southwestern Tajikistan, and south-central Afghanistan. They inhabit isolated mountainous regions, often residing under stones or within mud cracks along riverbanks in semi-arid environments.