Abstract
Interactions between ants and hemipterans (Auchenorryncha e Sternorryncha) are important to understand the impact of multitrophic relationships on arthropod diversity on vegetation. The present field study experimentally investigates the outcomes of a multispecies interaction involving four components: ants, hemipteran trophobionts (Enchenopa brasiliensis Strümpel, chewing herbivores, and host plant (Solanum lycocarpum St. Hill). The occurrence of temporal variation in the outcomes of the relationships was also investigated. Results showed that ants were benefited by a rich food source predictable in time and space, while membracids survived better under ant attendance. Ant tending also had a positive impact on treehopper fecundity. Presence of ant-hemipteran associations was demonstrated to benefit the host plant through a significant reduction in herbivory caused by chewing insects.
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