【药材来源】地龙为钜蚓科动物参环毛蚓Pheretima aspergillum (E.Perrier)、通俗环毛蚓Pheretima vulgaris Chen、威廉环毛蚓Pheretima guillelmi(Michaelsen)或栉盲环毛蚓Pheretima pectini fera Mi