A new troglobitic Eukoenenia (Palpigradi: Eukoeneniidae) from Brazil

Abstract

A new Brazilian species of the genus Eukoenenia is described from a single male specimen collected within the Archimedes Passini cave, a marble cave located in the municipal district of Vargem Alta, Espírito Santo. Eukoenenia spelunca, sp. nov., has six blades on the prosomal lateral organs and a unique shape of the genital lobes. Some morphometric parameters demonstrate the specialization of this new species to the cave environment.