Micrographs of two new species of the freshwater ‘common’ subclade of subgenus Paraphysomonas: Paraphysomonas vulgaris vulgaris, P. aff. vulgaris vulgaris (W03), P. cambrispina.(A, B)P. aff. v. vulgaris (SW02). (C, D)P. v. vulgaris. (E, F)P. v. vulgaris (W03). (G, H)P. cambrispina. (A, B)P. aff. v. vulgaris TEMs. (A) A group of detached scales with a close-up of the spine tips. (B) A selection of P. aff. vulgaris scales with varying spine lengths as well as inflated spine bases (arrow). (C)P. v. vulgaris TEM. Detached scales with inflated spine base and crease (arrow). (D) DIC of live P. vulgaris cells of varying sizes. (E, F) DIC of live P. aff. v. vulgaris (W03) cells; one dividing (%). (F) Enlarged image of boxed cell to show obvious scale-base layer (double arrowhead) and possible extrusome (arrowhead). (G) DIC of live P. cambrispina cells. (H) TEM of detached P. cambrispina scales, N.B. scales are almost twice as small as the other species in this plate. Scale bars: C, D, E, F and G, 5 μm. A and B, 1 μm. H, 0.5 μm.