Figure 1

(a) Gills of Rhamdia quelen, collected from the Pardo River containing plasmodium (P) between the gill filaments. (b) Mature myxospore of Henneguya novaerae n. sp. found parasitizing the gills in front view, showing two equally-sized elongated polar capsules located side by side at the previous pole. (c) Mature myxospores of Henneguya novaerae n. sp. Note the nucleus (N) and the extruded tubule (white arrow). (d) Henneguya novaerae n. sp. myxospore in side view.