Macrovestibulum obtusicaudum

have host

• Global Biotic Interactions: Trachemys scripta (Thunberg In Schoepff 1792) (slider turtle, red-eared terrapin, red-eared slider)
• Global Biotic Interactions: Trachemys scripta elegans (Wied 1838) (Cumberland Slider)

parasitize

• Global Biotic Interactions: Graptemys geographica (Le Sueur 1817) (Common Map Turtle)