Redescription of two troglobiotic species of the genus Pseudosinella Schäffer, 1897 (Collembola, Entomobryidae) from the Western Carpathians

Two troglobiotic species of the genus Pseudosinella Schaffer, 1897 from the Western Carpathians are redescribed, P. ag- gtelekiensis (Stach, 1929) and P. paclti Rusek, 1961. P. aggtelekiensis has endemic distribution restricted to the Slovak-Aggtelek Karst region in Slovakia and Hungary. It shows higher level of troglomorphy (elongation of antennae, basal dis-placement of ungual teeth concurrent with their reduction) probably representing a descendant of the older phyletic Lep- idocyrtus-Pseudosinella lineage. P. paclti, distributed in caves of several karstic regions in central Slovakia, is characteristic with medium level of troglomorphy.