Myxosoma pendula n. sp. (Protozoa,Myxosporida) from the Creek Chub Semotilus atromaculatus*

SYNOPSIS. A new species, Myxosoma pendula, was found surrounded by tissue fluid with granulocytes in pedunculated cysts formed from the mucous membrane of the gill arches of Semotilus atromaculatus collected in the Kewaunee River in Wisconsin. This species has a spherical vegetative stage with 2-layered ectoplasm composed of an outer homogeneous layer and an inner layer with canaliculi, and avoid spores that differentiate in the central area of the endoplasm.