title: A new species of Urocleidus (Trematoda: Monogenea) from gills of the white perch, Morone americana (Gmelin).
mesh_terms: D000818:Animals; D005399:Fishes / Q000469:parasitology*; D005880:Gills / Q000469:parasitology; D009657:North Carolina; D014200:Trematoda / Q000033:anatomy & histology / Q000145:classification*