These three types of beetles are all protected under the European Habitats Directive. During the larval stages, they all rely on dead wood as a source for their development, known as "saproxylic". Once citizen scientists come across one of these beetles, they can observe it, take a picture and upload it on the BOB App along with a few requested information. Should participants struggle with identifying the exact beetle species, they can still upload pictures with descriptions and the CREA team will be able to work with the provided information.