Springtails (Hexapoda, Collembola) of Savadkuh (Mazandaran) with the description of a new species of Isotomurus Börner (Entomobryomorpha, Isotomidae)

The present study was conducted to investigate springtail fauna of different ecosystems in Savadkuh County, southeast of Mazandaran province, during 2021–2022. Results of the current study led to the identification of 26 species, which were determined as new records for Savadkuh Collembola fauna. Additionally, a new species of Isotomurus Börner of the family Isotomidae is described from northern Iran. The new species, Isotomurus matanicus sp. nov. belongs to a species-group characterized by 3,3,1 trichobothria on Abd. II–IV, 3+3 laterodistal setae on ventral tube, and no seta on mucro. The main differences between I. matanicus sp. nov. and the other species determined in this study are summarized. The list of collected species with the description of the new species is given and illustrated.