Neoechinorhynchus (Neoechinorhynchus) emydis (Leidy 1851)

are endoparasites of

• Global Biotic Interactions: Graptemys versa Stejneger 1925 (Texas Map Turtle)
• Global Biotic Interactions: Graptemys pseudogeographica (Gray 1831) (False Map Turtle)
• Global Biotic Interactions: Campeloma rufum (Haldeman 1841)
• Global Biotic Interactions: Cypria maculata Hoff 1942
• Global Biotic Interactions: Graptemys geographica (Le Sueur 1817) (Common Map Turtle)

have host

• Global Biotic Interactions: Chrysemys picta (Schneider 1783) (Painted Turtle)
• Global Biotic Interactions: Trachemys scripta (Thunberg In Schoepff 1792) (slider turtle, red-eared terrapin, red-eared slider)
• Global Biotic Interactions: Graptemys geographica (Le Sueur 1817) (Common Map Turtle)
• Global Biotic Interactions: Trachemys scripta troostii (Holbrook 1836) (Cumberland slider)
• Global Biotic Interactions: Trachemys scripta (Thunberg In Schoepff 1792) (slider turtle, red-eared terrapin, red-eared slider)

parasitize

• Global Biotic Interactions: Trachemys scripta elegans (Wied 1838) (Cumberland Slider)
• Global Biotic Interactions: Campeloma rufum (Haldeman 1841)
• Global Biotic Interactions: Graptemys pseudogeographica (Gray 1831) (False Map Turtle)
• Global Biotic Interactions: Campeloma rufum (Haldeman 1841)
• Global Biotic Interactions: Graptemys pseudogeographica (Gray 1831) (False Map Turtle)