ectoparasite

Which Organism Is An Ectoparasite? Ectoparasites. Ectoparasites are organisms that live on the skin of a host, from which they derive their sustenance. The phylum Arthropoda includes the two-winged, or dipterous, flies. What is an example of an Endoparasite? Endoparasites include ascarids or roundworms (Toxocara cati and Toxascaris leonina), hookworms (Ancylostoma and Uncinaria), and coccidia.