Fig. 4
DIC light micrographs of Diatomophthora perforans subsp. pleurosigmae at different life cycle stages in Pleurosigma intermedium. a Infection at an early stage; b thallus maturation; c, d multiple infections on a single host resulting in two (c) and three (d) thalli of the parasitoid; e, f thallus differentiation with visible zoospores initials; g empty sporangium. Scale bars = 50 μm in all pictures