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The material for this study was obtained after intensive sampling in the colluvial mesovoid shallow substratum, or MSS, of the Sierra de Guadarrama National Park using 33 subterranean sampling devices (SSD). The data were obtained from the first extraction of the traps between May and October of 2015. This paper presents the results for the Entomobryomorpha Börner, 1913, which was part of the Collembola captured. Four families and 12 genera have been studied: Isotomidae Schäffer, 1896 (Folsomia Willem, 1902, Tetracanthella Schött, 1891, Uzelia Absolon, 1901, FolsomidesStach, 1922, IsotomurusBörner, 1903, Parisotoma Bagnall, 1940, PseudisotomaHandschin, 1924 and Pachyotoma Bagnall, 1949), Orchesellidae Börner, 1906 (OrchesellaTempleton, 1835 and Heteromurus Wankel, 1860), Entomobryidae Schäffer, 1896 (Entomobrya Rondani, 1861) and Lepidocyrtidae Wahlgren, 1906 (Lepidocyrtus Bourlet, 1839 and Pseudosinella Schäffer, 1897). The species of Orchesella were studied in a previous paper (Baquero et al. 2017). The richness of the habitat sampled is defined by twenty-one species, eight of which are new: Pachyotoma penalarensis Baquero & Jordana n. sp., Entomobrya guadarramensis Jordana & Baquero n. sp., Entomobrya ledesmai Jordana & Baquero n. sp., Lepidocyrtus labyrinthi Baquero & Jordana n. sp., Lepidocyrtus paralignorum Baquero & Jordana n. sp., Lepidocyrtus purgatori Baquero & Jordana n. sp., Pseudosinella valverdei Baquero & Jordana n. sp. and Pseudosinella gonzaloi Baquero & Jordana n. sp. Entomobrya intermediaBrook, 1884 (England) is discussed and a new name Entomobrya katzi Jordana & Baquero n. sp. is proposed for E. intermedia sensu Katz et al. (2015) based on the American specimens.