Chloromyxum atlantoraji n. sp. from the gall bladder of the spotback skate, Atlantoraja castelnaui (Miranda Ribeiro) (Arhynchobatidae, Rajiformes). (A) Spherical polysporic plasmodium (DIC micrographs). (B) Plasmodium displaying highly irregular shape morphology with the presence of peripheral projections (arrow) (DIC micrographs). (C) Mature myxospore showing caudal filamentous projections (arrows), valvular view (DIC micrographs). (D) Mature myxospores, sutural and medial views (SEM). (E) Mature myxospore, valvular view (SEM). (F) Detail of the caudal bundle of filamentous projections (SEM). (G) Detail of the anterior apex showing the mild depression area for polar filaments extrusion (arrow) (SEM). Scale bars: A = 10 μm; B = 20 μm; C = 5 μm; D, F, G = 1 μm; E = 2 μm