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. 2005 Sep 14;360(1462):1905–1916. doi: 10.1098/rstb.2005.1722

Figure 5.

Figure 5

Diagnostic sites in cox1 for Hirudo verbana (position numbers: 267, 360, 507, 513, 543, and 579). A leech obtained from Ward's Biological for this study and shipped under the name of ‘Hirudo medicinalis’ unequivocally groups with Hirudo verbana. Also, both Black et al. (1997) and Siddall & Burreson (1998) obtained their representatives of Hirudo medicinalis from Carolina Biological supply, and both of those sequences group with the Asian Hirudinaria manillensis notwithstanding the fact that the specimen used by Siddall & Burreson (1998) is morphologically indistinguishable from H. verbana.