Fig. 3

Illustration of an unknown haemogregarine by Ball (1967) [30] in Varanus niloticus (Linnaeus in Hasselquist, 1762). a–d Redrawn and adapted from Ball (1967) (his Figs. 19–22). Illustrations representing an unknown haemogregarine found as a concurrent infection to Hepatozoon varani (Laveran, 1905) (syn. Haemogregarina varani) in a Varanus niloticus from Kenya. a Possible trophozoite stage or young stage, shrinkage and vacuolation of the host cell and host cell nucleus not yet apparent. b Possible dividing stage. c–d Mature gamont stages, note the shrinkage and heavy vacuolation of the host cell erythrocyte. c Mature gamont folded within a capsule with possible nucleus. d Folding of the gamont and the gamont nucleus not observable through the capsule. Scale-bar: 10 μm (even though not provided by Ball, we have provided a scale matching to the in text description)