Table 25.

Key to the Haemoproteus species of Suliformes birds^a

Step	Features and species
1 (2)	The average number of pigment granules is greater than 40 in fully grown macrogametocytes (Fig. 26a). The average number of pigment granules in fully grown macrogametocytes is at least twice that in fully grown microgametocytes (compare Fig. 26a and b)
	………………………………………………………………………………………………………………….	H. iwab (Fig. 26a, b) [3, 131, 132]
2 (1)	The average number of pigment granules is less than 40 in fully grown macrogametocytes (Fig. 26c). The average number of pigment granules in fully grown macrogametocytes is not twice that in fully grown microgametocytes (Fig. 26c and d)
	………………………………………………………………………………………………………………….	H. valkiunasic (Fig. 26c, d) [46]

^aBased on phylogenetic analysis [46], the species of subgenera Haemoproteus and Parahaemoproteus parasitize birds of order Suliformes. Parasites of these two subgenera cannot be distinguished based on morphological characters of their gametocytes. To facilitate identification of all species parasitizing Suliformes birds, the parasites of both subgenera were given in this key

^bSpecies of subgenus Haemoproteus

^cSpecies of subgenus Parahaemoproteus