Fig. 4

Gametocytes of two species of haemoproteids, which have been reported in the wood warbler Phylloscopus sibilatrix. Macrogametocytes (a-c, e-g) and microgametocytes (d, h) of Haemoproteus majoris (a-d) and H. belopolskyi (e-h). Note that the intensity of staining of the cytoplasm is different in macro- and microgametocytes. Long arrows: gametocyte nuclei; short arrows: vacuole-like spaces in macrogametocytes; arrowheads: pigment granules. Giemsa-stained thin blood films. Scale-bar: a-h, 10 μm