General distribution Holarctic but not certain due to probably confusion with other congeners. In Canada, the species has been recorded from the Yukon, NWT, Nunavut, British Columbia, Alberta, Manitoba, Ontario, and Quebec. Despite numerous records of this species, the presence of true C. armatain Nearctic is still questionable. Christiansen & Bellinger (1980, p. 143) believed that 'all Nearctic records [of C. armata] are suspect'. Fjellberg (1985, p. 35) wrote that 'I have compared specimens from Alaska and northeastern Siberia with material from Switzerland and France and find no sharp differences except in one important detail: European specimens have only on sublobal hair on maxillary lobe, whereas Alaskan/Siberian specimens have to like most other Ceratophysella with B chaetotaxy'. There is also a remark in Babenko & Fjellberg (2006, p. 9) that the authors 'are not sure that specimens from eastern Palearctic and Nearctic tundras are conspecific with European C. armata'. It is highly probable that the majority of old records of the species, at least from the northern parts of Canada, may be just misidentifications of C. dendiculata, as is the case for Greenland (Fjellberg 2015) (in Babenko et al. 2019). Reference: Babenko, A., Stebaeva, S., & Turnbull, M.S. 2019. An updated checklist of Canadian and Alaskan Collembola. Zootaxa 4592(1): 001-125.