Alaus oculatus can reach a length of about 25–45 millimetres (1.0–1.8 in). They have an elongated body, black in colour throughout. The pronotum exhibits a large oval patch of darker scales, framed in white, on each side - the common name of the beetle derives from this feature. The elytra are striated and mottled with silvery whitish scales. The "false eyes" depicted on the pronotum are a defence adaption designed to confuse or frighten potential predators. Like all click beetles, A. oculatus is also capable of suddenly catapulting itself out of danger by releasing the energy stored by a click mechanism, which consists of a stout spine on the prosternum and a matching groove in the mesosternum.
Distribution and habitat
- R.E. Woodruff (2014). "Featured creatures: Alaus spp". University of Florida. Retrieved 2017-07-13.
- "Eyed click beetle (Alaus oculatus) (Linnaeus, 1758)". Forestry Images, The University of Georgia. Retrieved 2017-07-13.
- "Species Alaus oculatus - Eyed Click Beetle". BugGuide.net. 2016. Retrieved 2017-07-13.
- Evans, Arthur V.; Bellamy, Charles (2000). An Inordinate Fondness for Beetles. University of California Press. pp. 27–28. ISBN 978-0-520-22323-3.
- Media related to Alaus oculatus at Wikimedia Commons
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