Feb 1, 2019 · A species of horned beetle has a startling secret: a gearing mechanism in its mouthparts. The beetles beat us to the invention of meshed gears, possibly by millions of years. Japanese...

Oryctes rhinoceros is a large dynastid beetle with a length of 35–50 mm and a dark-brown to black colour. The head has a horn which is more prominently developed in males and in larger specimens. The pronotum has a large central depression with two humps at the hind margin and the tibia of the foreleg has three large teeth.

Dec 21, 2023 · When a rhinoceros beetle is threatened, it makes a hissing sound, but not with its mouth. Instead, the sound is produced when its wings rub against its abdomen. This sound might be considered a predator-avoidance measure for the rhinoceros beetle.

The Japanese rhinoceros beetle (Allomyrina dichotoma), also known as the Japanese rhino beetle, the Japanese horned beetle, or by its Japanese name kabutomushi (兜虫, 甲虫 or カブトムシ), is a species of rhinoceros beetle.

Feb 2, 2025 · Rhinoceros beetles can pinch very weakly and use their mouth parts for feeding, making them harmless to humans. They are one of only a handful of insects that produce a loud enough noise for humans to hear, with the loudest being a horn.

Mar 12, 2019 · Japanese biologists recently discovered an astonishing structure within the mandibles (mouth pincers) of the horned beetle (subfamily Dynastinae, AKA, Rhinoceros beetle). The insects were discovered to have complex gear-like structures that operate in “completely synchronous movements.” 1 Entomologists at the Tokyo University of Agriculture ...

Examples of insects with basic mandibulate mouthparts include grasshoppers, cockroaches, and ground beetles. Immature stages of many holometabolous insects (like beetle larvae and lepidopteran caterpillars also have mandibulate mouthparts.

The ox beetle is a type of rhinoceros beetle that has not one, not two, but three horns! Male beetles have two horns behind their head and a larger horn in the center. While female beetles don’t have any horns, they do have small bumps called tubercles where horns would normally be.

Nov 26, 2024 · Ox beetles are known for their large pincers, while Japanese rhinoceros beetles have a simple gearing mechanism that ensures their mouthparts move in synchrony and helps them chew tough bark. They use their mandibles to break down food, such as decaying wood, fruits, and nectar.

The mouthparts of adult rhino beetles are adapted for chewing and biting. They are often found burrowing into the growing crowns of palms to feed on the young leaves. They are nocturnal and often attracted to lights, such as porch and streetlights.