The Balearic holm-oak (Cyclamini balearicae-Quercetum ilicis) is considered "Natural Habitat of Community Interest". In these Mediterranean sclerophyllous forests, the code "9340 Quercus ilex forests" (Llorens et al., 2007) is applied. In recent years, the great capricorn beetle (Cerambyx cerdo L. 1758) causes serious conservation problems in the holm oak forest of Mallorca, endangering its sustainability and long-term survival. In this work, the results of a first control campaign of the bathing water in the public area of Son Amer (Escorca) are presented, to begin to decrease its population and take advantage of the trap to determine the "non-target" insects that are captured, and to be able to evaluate the repercussions of the traps on this drill in the entomofauna of the holm oak forest. The insects are also related.