progarnia progarnia progarnia is a genus of parasitic alveolates belonging to the phylum apicomplexia. progarnia scientific classification domain: eukaryota clade: diaphoretickes clade: tsar clade: sar clade: alveolata phylum: apicomplexa class: aconoidasida order: haemospororida family: garniidae genus: progarnialainson, 1995 species progarnia archosauriae history the genus was described in 1995 by lainson. description merogony occurs principally in leucocytes and thrombocytes and to a lesser extent in the erythrocytes. no pigment is produced. gametogony, like merogony, occurs principally in leucocytes and thrombocytes and to a lesser extent in the erythrocytes. again no pigment is produced. nothing is currently known about parasitic forms outside the blood. hosts the only known host is the spectacled caiman (caiman crocodilus crocodilus). geographic distribution this genus has been described in south america.