Generally, rhinoceros beetles are considered to be those in the Dynastinae, a subfamily of the scarabs, Scarabaeidae. Most live in Africa and Asia, although one, the European Rhinoceros Beetle (Oryctes nasicornis), occurs as far north as Scandinavia, though not in Britain. One of Europe's largest insects at around 6cm long, O. nasicornis lives associated with wood of various types (e.g. stumps, sawdust) and is quite scarce, being protected by legislation in some countries. The images below show what a splendid beast it is, and if you visit here, you can see a 3-D image from a CT scan of an Oryctes specimen being rotated.
|O. nasicornis adult.|
|O. nasicornis pupa.|
|S. cylindricum adult.|
Oryctes adult: Thanks to 'Epp' via the Wikimedia Commons (public domain).
Oryctes pupa: Thanks to 'Banco de imágenes del CNICE - MEC' via the Creative Commons Attribution-Share Alike 2.5 Spain license.
Sinodendron adult: Thanks to 'Siga' via the Wikimedia Commons Attribution-ShareAlike 3.0 Unported license.