– Isotoma elongata MacGillivray, 1896: 49
NU Fjellberg 1986; Babenko 1993; Skidmore 1995; Babenko & Bulavintsev 1997; Babenko & Fjellberg 2006
BC Cannings 2010
AB Skidmore 1995; Lindo 2014
MB McClure 1943; Hammer 1953; Mills & Sinha 1971; Christiansen & Bellinger 1980, 1998; Aitchison 1984, 1984c; Skidmore 1995; Babenko & Fjellberg 2006; Porco et al. 2014
ON James 1933; Christiansen & Bellinger 1980, 1998; Skidmore 1995
General distribution: Nearctic.