Figure 1

Histozoic myxosporean, Myxidium incomptavermi n. sp., infecting the gill monogenean Diplectanocotyla gracilis. A) Flattened monogenean showing no internal organ definition, with myxospores (S) released from the body cavity, bar = 200 μm. Inset) fine detail of the haptoral sclerites, bar = 50 μm. B) spores released from ruptured parenchymal tissues (white arrow) with numerous spores packed inside the worm (black arrow), bar = 10 μm. C) Higher magnification of myxospores revealing a typical Myxidium morphology, bar = 10 μm. A further figure plate of air-dried spores is available from the additional file 2 S2.