Boreonectes griseostriatus (a–m) and B. multilineatus (n–r) at higher magnification, for detailed comparison. a–e northern localities a ♂, Sweden, Öregrund (shown as fig. 2a by Dutton and Angus 2007, and as fig. 2a by Angus 2008) b, c Finland, Sevettijärvi, ♀ b plain (Giemsa stained) c the same nucleus C-banded (shown as fig. 2b, c by Angus 2008) d, e B. g. strandi, ♂, Norway, Bugøynes, d plain e the same nucleus C-banded (shown as fig. 2d, e by Angus 2008) f–m Alpine localities f, g ♂, Switzerland, Valais, pool by Le Louché f plain g the same nucleus, C-banded (shown as fig. 3d, e by Angus 2010) h, i ♂, Germany, Bavaria, Seeonalm h plain i the same nucleus C-banded (shown as fig. 3f, g by Angus 2010a) j, k ♂, France, Savoie, pool south of the Lac de Mont Cenis j plain k the same nucleus C-banded (shown as fig. 5c, d by Angus et al. 2015) l, m ♀, France, Savoie, Col du Petit Saint Bernard l plain m C-banded (shown as fig. 3c, d by Angus 2010a) n–r B. multilineatus, details of the material given in Table 1 n ♂, Scotland, C-banded o, p ♂, France, Lac d’Oncet o plain p C-banded q, r ♀, France, Lac d’Oncet q plain r the same nucleus, C-banded. Missing chromosomes indicated by solid circles. Scale bar: 5 µm.