Range: southeast Asia,
Indonesia, and northern Australia
Size: 35 - 70 mm
Widespread across the southeast Asian tropics
is Xylotrupes gideon, a very common rhinoceros beetle that is completely
black in color, and has a very shiny texture. The horn design of
extremely similar to that of the genus Dynastes of North and South
America. One major difference however, is that the cephalic horn
is bifurcated at the tip, whereas that of Dynastes is not.
Along with Augosoma centaurus of western Africa, X. gideon
represents a case of parallel evolution, as all three of these genera have
developed very similar horn and body shapes.