About Sinodendron cylindricum (Linnaeus, 1758)
This species, Sinodendron cylindricum, is a beetle that belongs to the stag beetle family Lucanidae. Adults reach a body length of 12 to 16 millimeters. They have a very shiny black body, which sometimes has a turquoise sheen. Their body shape is cylindrical, and their elytra and thorax have distinct rows of pits and grooves. Although they are stag beetles, they look quite similar to true rhinoceros beetles, which are known for their characteristic rhinoceros-like horn. Males of this species have a well-developed horn on the head, and this horn is significantly smaller in females. Additionally, the cavities on the female pronotum are much shallower than the clearly defined cavities found in males. The larvae have white, soft bodies and brown heads. This species is distributed across most of the European continent, the British Isles, and extends east to western Siberia. It is absent only from southwestern Spain and Portugal, and northern Scandinavia. The beetle prefers primary deciduous forests located at cooler, higher altitudes. It can also be found in old willow stands, avenue and street trees, parkland, hedgerows, and fruit trees.
