caption: The image shows a black rhinoceros beetle perched atop a piece of wood, with a ruler next to it. The beetle has a glossy black finish, and its antennae are long and thin. Its legs are short and stubby, and it has two large horns protruding from its head. Its wings are folded against its body and its legs are tucked in close to its body. The ruler is a standard measuring tool used to measure the size of the beetle.