Dr. Ladislav Hamerlík is an aquatic ecologist fascinated by the variability and diversity of Chironomidae. He studies ecology and taxonomy of these tiny insects, mainly, as indicators of both recent and past environmental changes all over the world. Currently, he holds a position as assoc. professor in the Department of Biology and Ecology, Faculty of Natural Sciences, Matej Bel University, Banská Bystrica, SlovakiaDr. Fabio Laurindo da Silva is professor in the Department of Zoology, Institute of Biosciences, University of São Paulo, São Paulo, Brazil, where he teaches courses in biogeography, aquatic insects, and general entomology, and conduct research on evolutionary biology, historical biogeography, and systematics of Chironomidae