2. Lucanus cervus: European stag beetle - Size: 3 inches long. The European stag beetle, Lucanus cervus, is a very large beetle, with males typically reaching 3 inches (7.5 cm) in length, including their large mandibles according to the European Stag Beetle Monitoring Network. Females are smaller, generally around 1 to 2 inches (3 to 5 cm). The males' most prominent feature is their large, antler-like mandibles, which they use in battles with other males for mating opportunities. Unfortunately with habitat destruction, this beetle is struggling and it is currently listed as near threatened by the IUCN Red List. While widely distributed across Europe, its population is declining, particularly in the north and central regions, due to habitat loss and the scarcity of dead wood. It's considered endangered in some areas, like Poland. Have you ever been to Poland?
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