serpentoplasma serpentoplasma serpentoplasma is a genus of parasitic alveolates belonging the phylum apicomplexa. the genus was described in 1962 by pienaar. serpentoplasma scientific classification domain: eukaryota (unranked): sar (unranked): alveolata phylum: apicomplexa class: aconoidasida subclass: haemosporidiasina order: achromatorida family: haemohormidiidae genus: serpentoplasma the species in this genus infect snakes. morphology the trophozoites are small and resemble a drop of oil within the erythrocyte.