Abstract
Uropygi is an arachnid order comprised by approximately 120 extant species, all placed in one subfamily - Thelyphonidae. This family is divided into four subfamilies: Hypoctoninae, Thelyphoninae, Typopeltinae and Mastigoproctinae. Mastigoproctinae is comprised by 30 species allocated in seven genera, and 21 of these species belong to the type genus, Mastigoproctus. The main objectives of …