I. arctica Schött, 1893

– Isotoma viridis var. arctica Schött, 1893: 61

AK Folsom 1902, 1937; Potapov 2001; Fjellberg 2003; Babenko & Fjellberg 2006

General distribution: Western Nearctic (Alaska) and Eastern Palaearctic (Chukotka) .