Lecture by Josep Joaquim Pérez De-Gregorio, a member of the Catalan Lepidopterology Society. The session aims to present and comment on the research of butterflies and the most interesting events for the Catalan Lepidopterology Society during 2007. Photographs will be shown of the most surprising species found this year and there will be a discussion on the most significant aspects of their biology and the importance of their capture for Catalan fauna.