Colymbetes exaratus
Colymbetes exaratus is a species of predaceous diving beetle in the family Dytiscidae. It is found in North America.[1][2][3][4]
| Colymbetes exaratus | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Coleoptera |
| Family: | Dytiscidae |
| Genus: | Colymbetes |
| Species: | C. exaratus |
| Binomial name | |
| Colymbetes exaratus Leconte, 1862 | |
| Synonyms[1] | |
| |
Subspecies
These two subspecies belong to the species Colymbetes exaratus:
- Colymbetes exaratus exaratus
- Colymbetes exaratus incognitus Zimmerman
gollark: The reason they *do* is probably just consistency with other methods (it would be very annoying if they worked very differently to GET routing-wise) and so requests can be routed to the right handler more easily.
gollark: <@498244879894315027> Why wouldn't (shouldn't?) they have a URL?
gollark: They do have to spin pretty fast. There are sealed helium ones now.
gollark: > The HDD's spindle system relies on air density inside the disk enclosure to support the heads at their proper flying height while the disk rotates. HDDs require a certain range of air densities to operate properly. The connection to the external environment and density occurs through a small hole in the enclosure (about 0.5 mm in breadth), usually with a filter on the inside (the breather filter).[124] If the air density is too low, then there is not enough lift for the flying head, so the head gets too close to the disk, and there is a risk of head crashes and data loss. Specially manufactured sealed and pressurized disks are needed for reliable high-altitude operation, above about 3,000 m (9,800 ft).[125] Modern disks include temperature sensors and adjust their operation to the operating environment. Breather holes can be seen on all disk drives – they usually have a sticker next to them, warning the user not to cover the holes. The air inside the operating drive is constantly moving too, being swept in motion by friction with the spinning platters. This air passes through an internal recirculation (or "recirc") filter to remove any leftover contaminants from manufacture, any particles or chemicals that may have somehow entered the enclosure, and any particles or outgassing generated internally in normal operation. Very high humidity present for extended periods of time can corrode the heads and platters. https://en.wikipedia.org/wiki/Hard_disk_drive#Integrity
gollark: Interweb says it's to keep pressure equalized between the inside and out.
References
- "Colymbetes exaratus Report". Integrated Taxonomic Information System. Retrieved 2019-09-23.
- "Colymbetes exaratus". GBIF. Retrieved 2019-09-23.
- "Colymbetes exaratus species Information". BugGuide.net. Retrieved 2019-09-23.
- Nilsson, A.N. (2015). A World Catalogue of the Family Dytiscidae, or the Diving Beetles (Coleoptera, Adephaga), Version 1.I.2015 (PDF). Department of Ecology and Environmental Science, University of Umeå. Archived from the original (PDF) on 2019-07-26. Retrieved 2019-09-23.
Further reading
- Bousquet, Yves (2012). "Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico". ZooKeys (245): 1–1722. doi:10.3897/zookeys.245.3416. PMC 3577090. PMID 23431087.
- Lobl, I.; Smetana, A., eds. (2017). Catalogue of Palaearctic Coleoptera, Volume 1: Archostemata - Myxophaga - Adephaga. Apollo Books. ISBN 978-90-04-33029-0.
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