Red list of the saproxylic scarab beetles (Coleoptera: Lucanidae, Cetoniidae and Dynastidae) for Flanders

The Red List status of the saproxylic scarab beetles for Flanders was assessed. We evaluated 15
species belonging to the stag beetles (Lucanidae), rhinoceros beetles (Dynastidae) and flower chafers
(Cetoniidae). Further, four other species are discussed which are only present in Wallonia or their
(historic) presence in Belgium is unsure. One of these species is assessed as near threatened, five as
endangered, two as critically endangered (Gnorimus nobilis and Osmoderma eremita) and two as
regionally extinct (Gnorimus variabilis and Protaetia marmorata). The changes in distribution and
population trends of the species are presented. The most important Flemish hotspots are Voeren and
the Sonian forest. Based on the Red List, six species could be included on the list of protected species
of Flanders and Cetonia aurata no longer needs protection. Conservation measures need to focus on
the protection and restoration of their habitat. Concerning the protection of dead wood in forest, a lot
is already realised but the protection of old and hollow trees outside forests clearly needs more
attention. The four most threatened species are not coincidentally cavity depending species.