Pisivky (Psocoptera) byly zkoumány na 25 vybraných lokalitách v Krkonoších (21 lokalit) a okrajově v Podkrkonoší (4 lokality) v letech 1998, 1999 a 2004. Bylo zjištěno 13 druhů, z toho bylo 512 imag a 145 larev. Lokality se nacházejí v zonálním 4.-9. vegetačním stupni (VS), rašelinné geobiocenózy byly v 8. a 9. VS. V 5. VS (tj. společenstva Abieti-fageta s.lat) byly zjištěny eudominantní druhy Amphigerontia bifasciata, Peripsocus didymus a Trichadenotecnum majus, v 6. VS (tj. společenstva Picei-fageta s.lat.) Caecilius despaxi, Mesopsocus unipunctatus, Amphigerontia bifasciata a Stenopsocus lachlani, v 7. VS (tj. společenstva Fageti-piceeta s.lat.) Mesopsocus unipunctatus, Caecilius despaxi a 8. VS (tj. společenstva Piceeta s.lat., bez azonálních geobiocenóz) Mesopsocus unipunctatus a Caecilius despaxi. V rašelinných azonálních geobiocenózách 8. VS (tj. společenstvo Piceeta turfosa) byl eudominantní Mesopsocus unipunctatus, a v 9. VS (tj. společenstva Pineta montanae turfosa superiora) Mesopsocus unipunctatus a Metylophorus nebulosus.
Psocids (Psocoptera) were studied in 25 selected localities in the Krkonoše Mts. (21 localities) and the Podkrkonoší Region (4 localities) in 1998, 1999 and 2004. On the whole, 512 imagoes and 145 larvae of 13 species were determined. Localities were presented in 4th-9th altitudinal vegetation zone (AVZ), peat bog geobiocenosis were studied in 8th and 9th AVZ. Following eudominant species were found in the 5th AVZ (i.e. communities of Abieti-fageta s.lat.) - Amphigerontia bifasciata, Peripsocus didymus and Trichadenotecnum majus, in the 6th AVZ (i.e. communities Picei-fageta s.lat.) - Caecilius despaxi, Mesopsocus unipunctatus, Amphigerontia bifasciata and Stenopsocus lachlani, in the 7th AVZ (i.e. communities Fageti-piceeta s.lat.) - species Mesopsocus unipunctatus, Caecilius despaxi, and in the 8th AVZ (i.e. communities Piceeta s.lat.) Mesopsocus unipunctatus and Caecilius despaxi. Mesopsocus unipunctatus was eudominant in the peat bog azonal geobicoenosis in the 8th AVZ (i.e. communities Piceeta turfosa), Mesopsocus unipunctatus and Metylophorus nebulosus were eudominant in the peat bog azonal geobiocenosis in 9th (i.e. communities Pineta montanae turfosa superiora).