The butterflies in the genus Hamadryas are popular and noticeable representatives of the Neotropical Lepidoptera fauna. After a thorough taxonomic revision, 20 species were acknowledged within the genus, however no hypothesis of their phylogenetic relationship was proposed. The present dissertation provides a step further into the understanding of this fascinating group of butterflies not only by proposing the first phylogenetic hypothesis for the genus based on morphological and molecular data, but also by exploring for the first time in a group of butterflies the potential effect of venation associated with an specific behaviour on wing shape. Furthermore, this dissertation provides testable evolutionary hypotheses about the pattern of change for some of their most interesting natural history characters such as sound production and sexual dimorphism. The dissertation is organized in three chapters that can be visualized as manuscripts ready for publication; the first of these being already published (Garzón-Orduña, 2012).

Det svenska samhället har under de senaste åren bevittnat en förändring gällande samhällsvåldets karaktär och kontext. Det finns ett behov av effektiva preventiva åtgärder, vilket i sin tur kräver kunskap gällande det aktuella ämnet. Det huvudsakliga syftet med denna studie var därför att undersöka vilka möjliga faktorer som kan vara bidragande till samhällsvåldets eskalering med fokus på dess förändrade karaktär och kontext, med avgränsning på makronivå. Undersökningen utgick ifrån en kvalitativ ansats med semistrukturerade intervjuer som datainsamlingsmetod. Resultatet visar att orsakerna till samhällsvåldets kontext- och karaktärsförändring är mångfacetterade. Flertalet faktorer har betydelse för samhällsvåldets utveckling. De faktorer studien belyser är organiseringen inom svenska institutionen, förändringar i den kriminella miljön, narkotika samt media. Resultatet visar att dessa faktorer samspelar med varandra där organiseringen av Sveriges institutioner har en stor påverkan på hur de andra faktorerna uttrycker sig i samhället. / Swedish society has witnessed a change in recent years regarding the nature and context of community violence. There is a need for effective preventive measures, which in turn requires knowledge of the subject in question. The main purpose of this study was therefore to investigate what possible factors may be contributing to the escalation of community violence with focus on its changed character and context, with a definition at the macro level. The study was based on a qualitative approach with semi-structured interviews as a data collection method. The result shows that the causes of community violence´s context and character change are multifaceted. Several factors are important for the development of community violence. The factors the study highlights are the organization within the Swedish institution, changes in the criminal environment, drugs and the media. The results show that these factors interact with each other, where the organization of Sweden´s institutions has a major impact in how the other factors are expressed in society.