An updated checklist of Canadian and Alaskan Collembola Author Babenko, Anatoly Author Stebaeva, Sophya Author Turnbull, Matthew S. text Zootaxa 2019 2019-05-02 4592 1 1 125 journal article 26934 10.11646/zootaxa.4592.1.1 e5152ce0-a14b-4e7a-a676-26b4765bc49c 1175-5326 2656929 B6FF005C-D0AA-4532-8ACC-43D3DED984EF H. christianseni Yosii, 1960 Hypogastrura christianseni Yosii, 1960: 269 AB Christiansen & Bellinger 1980 , 1998 ; Skidmore 1995 ; Lindo 2014 Remarks: Bernard (2015 , p. 319) wrote that two species, H. christianseni and H. promatro ( Wray, 1950 ) , “appear to be nearly identical and occupy the same general range in the northwestern states of the U.S. , but possible synonymy must await study of H. christianseni type material”. General distribution: Nearctic.