Photograph of living adult specimens of the European medicinal leech (H. medicinalis Linnaeus 1758) and the Mediterranean medicinal leech (H. 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.

 
 
  Part of: 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