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European Stag Beetle

common

European Stag Beetle

Lucanus cervus

Habitat
Old oak forests of Europe
Body length
75 mm
Order
Coleoptera · Lucanidae

Weird but real

Males have antler-like jaws used for jousting other males off tree branches.

Why it's cool

Lives up to 7 years as a grub feeding inside dead oaks, then surfaces for a single summer to fight and mate.

Photographs

A European Stag Beetle (Lucanus cervus) at the Rodenhof in Saarbrücken. This bug is called Hootzemonn in the regional dialect of Saarland.
Flocci Nivis · CC BY 4.0 · source
Strictly protected adult stag beetles on an oak during copulation
Daniela A. Antoni · CC BY-SA 4.0 · source