Organism of the month – Rhinoceros Beetle

rhinoceros beetle by Jason BallJason Ball @

The Rhinoceros Beetle – Sinodendron cylindricum – lives in and eats wood as a grub, and apparently feeds on tree sap while it is an adult. Although much smaller than its relative the Stag Beetle, which takes 3 – 7 years to develop,the development of the larva will be sluggish, on such a high-fibre, low-protein, low-fat, low-sugar, low-vitamin diet.

More photos of different life stages and situations > bioimages

Sinodendron is quite tiny – it could sit on your thumbnail – not like the huge rhino beetles they show on TV. But it is rather handsome, speckled with indentations, and the rather striking horn that the males have. Now, unbelievable as this seems, the size of the horn is supposed to be a sign of ‘fitness’ as a mate. Who figured that out? What’s going through the mind of a female Rhinoceros Beetle when she sees a huge horn? Is she right?

Jason Ball @


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One Response to “Organism of the month – Rhinoceros Beetle”

  1. A beautiful cranefly! « the Natureheads blog Says:

    […] Species dependent on deadwood are termed ‘saproxylic’. Another example of a cool insect that relies on deadwood resource is the Rhinoceros Beetle. […]

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