beetle of lucanus lucanus cervus or stag beetl in wildlife on rock close up image

animal antenna antler armor armour beak beetle beetledeer bug cervus close closeup coleoptera crust deer disappearing endangered entomologist entomology europe fauna fly genus horn horns insect iucn list lucanidae lucanus lucanuscervus macro nature obsolescent pest pseudolucanus rare red redlist science scopoli shell species stag stagbeetle stone wild wildlife wings