Five Horned Rhino Beetle South East Asia 8" x 10" Black Shadow Box Eupatorus gracilicornis has four large horns on the prothorax and one extra-long cephalic horn. Rhinoceros beetles. Its coloring is shiny jet-black, while the elytra or fore wings are colored yellow or gold. The body is covered by a thick exoskeleton and a pair of thick wing covers lay atop another set of membranous wings underneath, allowing the beetle to fly, although not very efficiently, growing to its large size.