Lutodrilidae McMahan, 1976

There is only one species in this semi-aquatic family, Lutodrilus multivesiculatus McMahan, with a distribution restricted to four parishes/counties in eastern Louisiana, USA (McMahan 1976; Anderson et al. 2017). It has developed caudal respiration similar to that observed in Alma and Drilocrius (both in the family Almidae), a special respiratory adaptation to survive in its mostly anaerobic habitat, consisting of areas with large accumulations of fine-textured mud and organic debris along the margins of slow-moving water courses (McMahan 1998).