Evidences that human disturbance simplify the ant fauna associated a Stachytarpheta glabra Cham. (Verbenaceae) compromising the benefits of ant-plant mutualism oleh BC. Barbosa, R. Fagundes, LF. Silva, JFV. Tofoli, AM. Santos, BYP. Imai, GG. Gomes, MM. Hermidorff, SP. Ribeiro