A new myxosporidan, Dicauda atherinodi n.g., n. sp. of the minnow, Notropis atherinoides Rafinesque

Dicauda atherinoidi n.g., n. sp. (Protozoa: Myxosporida) was found in feral minnows, Notropis atherinoides (Cyprinidae), from western Lake Erie (Sterling State Park), Michigan, and the lower Mohawk and Hudson Rivers, New York. Dicauda, closely related to Myxobolus, differs from it in having two, occasionally three or more, rigid tail-like possibly mucoid appendages attached to the sutural ridge. The cysts are subdermal and most abundant on the head. Histological damage is not striking.