"Z. annulosus" has basically adapted to live and hunt around "A. decemarticulatus". The assassin bug species uses this particular plant to raise their nymphs because the trichomes of the plant deter larger ant species that may kill the young developing bugs. Also, the bugs secrete a sticky substance that allows them to walk on top of these trichomes, thus avoiding the traps of "A. decemarticulatus". So in the relationship between "Z. annulosus" and "H. physophora", the bug receives shelter from potential large predator ants, and the plant received a second line of defense against herbivores. The assassin bug also cohabitates the plant peacefully with the ants. They hunt in similar areas on the plant, but the assassin bugs are suspected to actively avoid any of the ants because they are much quicker than the ants.