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Authors: Botero-Trujillo, R., Ochoa, J.A., and Prendini, L.
For several decades, Troglotayosicus Lourenço, 1981, remained an enigmatic, monotypic scorpion genus believed to be troglobitic. The discovery and description in recent years of several endogean species of the genus, inhabiting the leaf litter of tropical rainforests in Colombia and Ecuador, advanced knowledge about these scorpions. The known distribution of Troglotayosicus was considerably expanded along the Andes, and it was demonstrated that, despite the absence of median ocelli, the genus is composed primarily of species that inhabit leaf litter. In the present study, Troglotayosicus ballvei, sp. nov., is described from Sacha Huagra Lodge, adjacent to Archidona Municipality, in Napo Province, Ecuador, raising the number of Troglotayosicus species to six, three each in Colombia and Ecuador. An updated map of the known distribution of the genus is presented.