Three recently recognized species of cyathostomes (Nematoda: Strongylidae) in equids in Kentucky

Three species of cyathostomes— Cylicocyclus ashworthi , Cylicostephanus bidentatus, and Cylicostephanus hybridus were identified recently in horses in Kentucky. General characteristics and distinguishing description of these species are presented. Distribution of these species and their role in the horse strongylid community are discussed. The importance of examining the entire contents of the large intestine or alternatively a high number of specimens in order to recover and identify species residing in low numbers is stressed.