Distinctive Collembola Communities in the Mesovoid Shallow Substratum: Entomobryomorpha of the Sierra de Guadarrama National Park (Central Spain) Author Baquero, Enrique University of Navarra, Faculty of Sciences, Department of Environmental Biology, University Campus, 31080, Pamplona (Spain) ebaquero@unav.es Author Jordana, Rafael University of Navarra, Faculty of Sciences, Department of Environmental Biology, University Campus, 31080, Pamplona (Spain) rjordana@unav.es Author Ortuño, Vicente M. Grupo de Investigación de Biología del Suelo y de los Ecosistemas Subterráneos, Departamento de Ciencias de la Vida, Facultad de Ciencias, Universidad de Alcalá, E- 28871, Alcalá de Henares, Madrid (Spain) vicente. ortuno @ uah. es vicente.ortuno@uah.es text Zoosystema 2021 2021-01-26 43 3 37 78 journal article 8557 10.5252/zoosystema2021v43a3 cd89b152-32bd-42cc-be33-a74a856fb5e4 1638-9387 4487162 urn:lsid:zoobank.org:pub:EA621D7C-F9AE-460B-8EBF-9E932862D4FE Pseudisotoma monochaeta ( Kos, 1942 ) Isotoma sensibilis var. monochaeta Kos, 1942: 125 . Pseudoisotoma unipila Stach, 1947: 321 . Pseudisotoma monochaeta – Stach 1947: 316 . MATERIAL EXAMINED. — Spain • 10 specimens ; SSD-1 , slides 05, 07, 09 and 10; Ortuño et al. leg.; MZNA • 2 specimens on slide and 6 in ethyl alcohol; SSD-2 , slides 04 and 09; same data; MZNA • 1 specimen ; SSD-6 , slide 08; same data; MZNA • 1 specimen ; SSD-7 , slide 08; same data; MZNA • 3 specimens ; SSD-17 , slide 04; same data; MZNA • 10 specimens ; SSD-18 , slides 03 and 04; same data; MZNA • 4 specimens ; SSD-20 , slide 05; same data; MZNA • 2 specimens on slide and 9 in ethyl alcohol; SSD-22 , slide 03; same data; MZNA • 2 specimens ; SSD-11 , slide 13; same data; MZNA • 1 specimen ; SSD-12 , slide 09; same data; MZNA • 1 specimen ; SSD-27 , slide 04; same data; MZNA • 5 specimens ; SSD-29 , slide 08; same data; MZNA • 1 specimen ; SSD-30 , slide 05; same data; MZNA • 3 specimens ; SSD-31 , slides 11 and 14; same data; MZNA . REMARKS It had already been cited in the Sierra de Guadarrama by Cassagnau (1954) . Originally described in Slovenia (East of Julian Alps, 2350 m ) ( Kos 1942 ), it has been cited in mountainous areas throughout Europe, excluding Great Britain , Norway , Sweden and Finland . Cited in Ireland, Russia (Urals, Caucasus) and Japan ( Potapov 2001 ).