The Noble Chafer, Gnorimus nobils, is an excellent indicator species for well-structured and varied old growth deciduous forests. The demands of the larvae and the adults are completely different: the larva lives for several years in the decaying wood of tree cavities, where a stable enevironment of their habitat is essential (not too high fluctuations of the moisture and temperature). This is the most critical part for the species, but the adults require sunny places with a vegetation rich in flowering plants, where they feed on the nectar.

The species can also be found in more traditional and man-made habitats, such as old orchards, old coppice stands, old parks with monumental trees, etc... - as long as their are tree cavities with decaying wood inside available in combination with flowering plants for the adults.