Giant Click Beetle

Oxynopterus mucronatus, like other members of the genus Oxynopterus, are among the largest of the click beetles. The males have distinctive feather-like antennae, with long flat lamellae extending from the antenna segments. The females in contrast, have thin toothed antennae and are larger than the males. The prothorax is shield-shaped, with sharply pointed posteriolateral tips. The elytra are long and smooth, tapering to a sharp point. The claws are simple, without bristles (setae), pads, or lobes on the tarsal segments. They are predominantly reddish-brown in life.

The larvae of O. mucronatus are specialized predators of termites of the genus Neotermes.

Dried O. mucronatus is regarded as a traditional aphrodisiac in Javanese culture. They are also popular among insect collectors due to their large sizes.