Fig. 4

Zygotes (a, d, g, j, m, p, s, v, y, bb), growing ookinetes (b, e, h, k, n, q, t, w, z, cc) and mature ookinetes (c, f, i, l, o, r, u, x, aa, dd) of Haemoproteus attenuatus (cytb lineage hROBIN1, a–c), Haemoproteus balmorali (hSFC1, d–f), Haemoproteus belopolskyi (hHIICT3, g–i), Haemoproteus fringillae (hCCF3, j–l), Haemoproteus hirundinis (hDELURB2, m–o), Haemoproteus lanii (hRB1, p–r), Haemoproteus motacillae (hYWT1, s–u), Haemoproteus parabelopolskyi (hSYAT1, v–x), Haemoproteus pastoris (hLAMPUR1, y–aa) and Haemoproteus tartakovskyi (hSISKIN1, bb–dd) during development in vitro. Note that all these parasites produce long outgrowths during initial stages off ookinete development, and their ookinetes are markedly vacuolated; these parasites appeared in one relatively well-supported sub-clade b1 in the phylogenetic tree (Fig. 1). Long simple arrows, nuclei of parasites; short simple arrows, vacuoles; simple arrowheads, pigment granules; short simple wide arrows, outgrowths of developing ookinetes. Methanol-fixed and Giemsa-stained thin blood films. Scale-bar: 10 µm