You searched for: “trophobiosis
The relationship in which ants receive honeydew from aphids and other homopterans, or the caterpillars of certain lycaenid and riodinid butterflies, and in return provide these insects with protection.

The insects supplying the honeydew are referred to as trophobionts.

This entry is located in the following unit: Ant and Related Entomology Terms (page 23)