Biology:Onymacris unguicularis

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Short description: Species of beetle

Onymacris unguicularis
Onymacris unguicularis MHNT (cropped).jpg
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Coleoptera
Infraorder: Cucujiformia
Family: Tenebrionidae
Genus: Onymacris
Species:
O. unguicularis
Binomial name
Onymacris unguicularis
Haag, 1875

Onymacris unguicularis, the head-stander beetle, also known generically as Toktokkies, is a species of fog basking darkling beetle that is native to the Namib Desert of southern Africa. Native to a arid zone but a region that receives a morning fog, the beetle is nicknamed the "head-stander" beetle for its habit of tipping its head downward and using its legs and the rest of its body to direct dew that condenses on its elytra and runs along the lateral ridges towards the mouth.

The description of Onymacris and its fog basking behavior was first made in 1976.[1] The species has trehalose and glycerol in its body fluid which may be adaptations to low temperature that the beetles can be exposed to at night. Another species O. bicolor has also been confirmed to use fog basking adaptations. Several other species that have been claimed to use fog-basking including Physosterna cribripes and Stenocara gracilipes however have been debated. The idea of harvesting atmospheric moisture from early morning dew in many parts of the world using special materials has been widely utilized.[2]

References

  1. Hamilton, William J.; Seely, Mary K. (1976). "Fog basking by the Namib Desert beetle, Onymacris unguicularis". Nature 262 (5566): 284–285. doi:10.1038/262284a0. 
  2. Mitchell, Duncan; Henschel, Joh R.; Hetem, Robyn S.; Wassenaar, Theo D.; Strauss, W. Maartin; Hanrahan, Shirley A.; Seely, Mary K. (2020). "Fog and fauna of the Namib Desert: past and future" (in en). Ecosphere 11 (1). doi:10.1002/ecs2.2996. ISSN 2150-8925. https://esajournals.onlinelibrary.wiley.com/doi/10.1002/ecs2.2996. 

Wikidata ☰ Q18398440 entry