Eustrongylides ignotus Jägerskiöld 1909

are endoparasites of

• Global Biotic Interactions: Ardea herodias Linnaeus 1758 (Great Blue Heron)
• Global Biotic Interactions: Lucania goodei Jordan 1880 (Bluefin Killifish)
• Global Biotic Interactions: Poecilia latipinna (Lesueur 1821) (Sailfin Molly)
• Global Biotic Interactions: Limnodrilus hoffmeisteri Claparède 1862
• Global Biotic Interactions: Micropterus salmoides (Lacepède 1802) (American Black Bass)

have host

• Global Biotic Interactions: Egretta tricolor (Müller & Pls 1776) (Tricolored Heron)
• Global Biotic Interactions: Gambusia affinis (Baird & Girard 1853) (Mosquitofish)
• Global Biotic Interactions: Nycticorax nycticorax hoactli (Gmelin & JF 1789)
• Global Biotic Interactions: Ardea herodias occidentalis Audubon 1835 (Great Blue Heron)
• Global Biotic Interactions: Ardea herodias occidentalis Audubon 1835 (Great Blue Heron)

parasitize

• Global Biotic Interactions: Egretta tricolor (Müller & Pls 1776) (Tricolored Heron)
• Global Biotic Interactions: Fundulus diaphanus (Lesueur 1817) (Banded Killifish)
• Global Biotic Interactions: Nycticorax nycticorax hoactli (Gmelin & JF 1789)
• Global Biotic Interactions: Hemisorubim platyrhynchos (Valenciennes 1840) (Porthole shovelnose catfish)
• Global Biotic Interactions: Cyprinodon variegatus Lacepède 1803 (Bahama sheepshead minnow)