Description of Xironogiton victoriensis n.sp. from British Columbia, Canada, with remarks on other species and a Wagner analysis of Xironogiton (Clitellata: Branchiobdellida)

Xironogiton victoriensis n.sp. is described from the crayfish Pacifastacus leniusculus leniusculus on Vancouver Island, British Columbia, Canada. Collections of P. l. leniusculus from Goldstream River, and Colquitz Creek, Victoria, and Burdette Creek, Burnaby, Vancouver, in southwestern British Columbia yielded Cambarincola fallax, C. gracilis, C. montanus, and Xironogiton kittitasi. Specimens of each species of Xironogiton have been examined and a taxonomic key for the genus has been constructed. The information was also used in a Wagner analysis of Xironogiton which showed the genus to be a monophyly.