leucocytozoon andrewsi leucocytozoon andrewsi leucocytozoon andrewsi is a parasite of the genus leucocytozoon. leucocytozoon andrewsi scientific classification domain: eukaryota clade: diaphoretickes clade: sar clade: alveolata phylum: apicomplexa class: aconoidasida order: haemosporida family: leucocytozoidae genus: leucocytozoon species: l. andrewsi binomial name leucocytozoon andrewsiatchley, 1951 like all leucocytozoon species l. andrewsi has both vertebrate and insect hosts. the invertebrate hosts belong to the flies of the genus simulium. the vertebrate hosts for this parasite are chickens. description the parasite was first described by atchley in 1951. geographical occurrence this species is found in the united states of america. clinical features and host pathology this species infects chickens (gallus gallus domesticus).