Opisthacidius mexicanus is a of assassin bug in the Reduviidae, Reduviinae. It was described by Peláez in 1942 and is native to Mexico and Middle America. As a member of the Reduviidae, it is presumed to be a predatory insect, though specific ecological details remain poorly documented in available literature.
Distribution
Mexico and Middle America. Distribution records indicate presence in Middle America, though specific locality details beyond the type locality are sparse in available sources.