For saproxylic beetles, the intermediate latitudes (France, Germany, Slovak Republic) as well as southern Europe clearly stand out as areas of high species richness. The Balkan Peninsula emerges as a hotspot of beetle biodiversity, highlighting the importance of the new Member States Bulgaria and Romania for biodiversity conservation in the EU. Looking at saproxylic beetle species richness from a national perspective, the top five EU countries are Italy, France, Slovakia, Spain and Austria.
Saproxylic beetle species show particularly high endemic species richness in central and eastern Europe. The Pyrenees and southern Europe also show an important concentration of endemism. The Mediterranean islands and Macaronesian islands have many range-restricted endemic saproxylic beetles, although these regions do not necessarily show up on the endemic species richness maps because typically each particular island will only have one or a few endemic species.
The map showing the distribution of threatened saproxylic beetles in Europe reveals somewhat different patterns from the picture of the overall species diversity. The greatest concentrations of threatened saproxylic beetle species are found in central and eastern Europe, with the Italian Peninsula, Greece and Cyprus also highlighted as having a high number of threatened species.