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The brown rhinoceros beetle or fighting beetle, Xylotrupes gideon, is a species of
large scarab beetle belonging to the subfamily Dynastinae.
Xylotrupes gideon can reach a length of 3.5–7 centimetres (1.4–2.8 in). As usual
with horn beetles there is a great difference between the genders. Males are larger
than females. They have two chitinous bifurcated horns, a thick thoracic horn and
a smaller cephalic horn, which they use to eliminate their rivals during the mating
period. These beetles are shiny dark red, dark brown, or black in coloration. The
eyes are located on each side of the head. When disturbed these beetles make
a hissing noise, produced by rubbing the tip of the abdomen against the edge the
elytra.
The larvae develop in decaying vegetable matter and take usually two years in
development, the adult beetles live 2–4 months. A female can lay about 20-30 eggs
but it depends on the place where they lived .
GRAFICA studente di YANGLAN E2.pdf (PDF, 34.05 KB)
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