I have been studying insect diversity at different levels, mainly on the Order Lepidoptera, focusing mainly in the role of host plants as drivers of evolutionary changes and in the process of speciation. I began my academic studies focusing on Chemical Ecology and the sequestration of plants secondary compounds by larvae of butterflies. Them I have fallen in love by the phylogenetic approach and I tried to apply it to understand the evolution of host plant use and specialization in butterflies. Just later I looked with more interest to the lower taxonomic levels, i.e., to populations, where the evolutionary processes are really happening. And them I began several studies on population genetics of butterflies and moths, including pest species, never forgetting to pay attention to their host plants. These popgen studies drove me to different genetic and genomic markers, which have permitted me to propose more complex questions everyday.