Macroscopic cysts measuring ≤860 × 500 μm were found in the testes of a flat backed toad, Bufo maculatus, collected in Cameroon, West Africa. On histologic examination, the cysts contained numerous spores of a Myxobolus sp. (Myxozoa: Myxobolidae). Spores in fixed tissues measured 9.2 μm long, 8.9 μm wide, and 4.0 μm thick; the range of values for length, width, and thickness were 8.8 to 9.6/mi, 8.6 to 9.4 μm, 3.6 to 4.4 μm, respectively (n =20). The shape index (length/width) was 1.03, and ranged from 1.00 to 1.09. Pathology was limited to a slight constriction of adjacent seminiferous tubules by the cysts. No host inflammatory response was noted. This myxozoan is distinct from all other members of the genus infecting anurans and is assigned the name Myxobolus bufonis sp. n.
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Vol. 28 • No. 2