Fig. 16

Morphological features of gametocytes, which are used for identification of Haemoproteus species parasitizing Falconiformes birds. Macrogametocytes (a–f) of Haemoproteus tinnunculi (a–c) and H. brachiatus (d–f). Note that growing gametocytes of H. brachiatus are highly irregular or amoeboid in outline (d, e). Advanced growing gametocytes of H. brachiatus often do not adhere to envelope of erythrocytes (d), which is not a case in H. tinnunculi (a). Long simple arrows—host cell nuclei. Short simple arrows—parasite nuclei. Simple arrowheads—pigment granules. Simple wide long arrows—a space between gametocyte and envelope of infected erythrocyte. Triangle wide arrows—ameboid outgrowths. Other explanations are given in the text