plasmodium billbrayi plasmodium billbrayi plasmodium billbrayi is a parasite of the genus plasmodium subgenus laverania. plasmodium billbrayi scientific classification domain: eukaryota clade: diaphoretickes clade: tsar clade: sar clade: alveolata phylum: apicomplexa class: aconoidasida order: haemospororida family: plasmodiidae genus: plasmodium species: p. billbrayi binomial name plasmodium billbrayikrief et al., 2010 p. billbrayi is phylogenetically very close to plasmodium gaboni, with both sharing a recent common ancestor. the parasite is named in honour of the distinguished malariologist “bill” robert stow bray (1923–2008). taxonomy plasmodium billbrayi was first described along with plasmodium billcollinsi by krief et al. in february 2010, by sequencing the whole plasmodium mitochondrial genome in chimpanzees. distribution this species is found in east africa. hosts plasmodium billbrayi infects common chimpanzees (pan troglodytes) and eastern chimpanzees (pan troglodytes schweinfurthii).