Figure 1 from: Kutschera U, Elliott J (2014) The European medicinal leech Hirudo medicinalis L.: Morphology and occurrence of an endangered species. Zoosystematics and Evolution 90(2): 271-280. https://doi.org/10.3897/zse.90.8715

Figure 1 - Photograph of living adult specimens of the European medicinal leech (Hirudo medicinalis Linnaeus 1758) and the Mediterranean medicinal leech (Hirudo verbana Carena 1820). The leeches, maintained in pond water, are depicted in dorsal view, with their disk-shaped posterior sucker attached to a petri dish.