Grassland Pricklypear

Opuntia tortispina Engelm. & J. M. Bigelow

are eaten by

• Global Biotic Interactions: Euphoria kernii Haldeman 1852
• Global Biotic Interactions: Cuerna obesa Oman & Beamer 1944
• Global Biotic Interactions: Chelinidea vittiger Uhler 1863 (Cactus Coreid)

have flowers visited by

• Global Biotic Interactions: Diadasia australis (Cresson 1879)
• Global Biotic Interactions: Lithurgopsis apicalis