Four new species of families Onychiuridae and lsotomidae (Hexapoda, Collembola) from Ubsunur Hollow (Tuva, Russia)

Abstract

The paper presents data on the springtails (Hexapoda, Collembola) of “Ubsunur Hollow” Reserve (Russia, Tuva). Four species are described: Oligaphorura tuvinica n. sp. (Onychiuridae) is characterized by pseudocellar formula 2+1,2/133/33343, thin granulation of Abd.VI and long a, seta on Abd.VI. Wankeliella intermedia n. sp. (Onychiuridae) is intermediate in form of PAO between genera Karlstejnia Rusek, 1974 and Wankeliella Rusek, 1975 and is distinguished from relatives mostly in 1+1 msetae on Abd.lV. Folsomides aridoviator n. sp. (Isotomidae) is similar to F. angularis (Axelson, 1905) differing by grey pigment on body and presence of four setae on dorsal side of dens. Folsomia sparsosetosa n. sp. (Isotomidae) is characterized by long dens and many chaetae on ventral side of manubrium, from F. nivalis (Packard, 1873) it differs in weakly serrated macrochaetae, absence of teeth on claw and more number of setae on ventral side of manubrium. The map of their sampling sites is illustrated. A classification key of the species of genus Folsomides Stach, 1922 for the territory of the former USSR is given.