Ontario | August, 2015 |

The ROM has a rich tradition of field expeditions in and around Ontario and the invertebrate section is no exception. Although we were primarily concerned with finding separate populations of the North American medicinal leech, Macrobdella decora, this trip also unveiled a lot of different diversity during our 10-day trip. Not including the fish leeches (family Piscicolidae), Ontario houses about 25 species of leeches and we managed to recover 18 of these. This was the first extensive fieldwork experience for my PhD student, Danielle de Carle.