Symbiotic interaction between Dorymyrmex (Formicidae) ants and caterpillar of Strymon mulucha (Lycaenidae) in Pantanal. For dettails about this interaction see the paper "Behavioral observations of ant-butterfly symbioses in the Pantanal wetlands of west-central Brazil" by Guedes & Kaminski published in Tropical Lepidoptera Research.