Mitotic chromosomes of Boreonectes spp., arranged as karyotypes. a–d B. griseostriatus a, b Sweden (from Dutton, Angus (2007)) c, d Mt Cenis e–h B. g. strandi, Teriberka i–l B. multilineatus i, j Scotland (from Dutton, Angus (2007)) k, l Lac d’Anapéou m–r B. emmerichi m, n from mid-gut, Maduo o–r from testis, Gangca Dasi s B. macedonicus, Crno Ezero, Macedonia (from Angus (2008)) t, u B. ibericus t Peña Lara (from Dutton, Angus (2007)) u Lagos de Lloroza. b, d, f, h, j, l, n, p, r C-banded, the rest plain, Giemsa-stained. Missing chromosomes indicated by asterisks (*). Scale line = 5 μm.