Parobisium yosemite

{{Short description|Species of pseudoscorpion}} {{Italic title}} {{Speciesbox | image = | genus = Parobisium | species = yosemite | authority = [[James Craig Cokendolpher|Cokendolpher]] & [[Jean Kathleen Krejca|Krejca]], 2010 }} '''''Parobisium yosemite''''', or the '''Yosemite cave pseudoscorpion''', is a species of [[pseudoscorpion]] in the [[Family (taxonomy)|family]] [[Neobisiidae]].<ref>{{ITIS |id=1125991|taxon=''Parobisium yosemite''}}</ref> A [[List of troglobites|troglobite]], the pseudoscorpion inhabits [[talus cave]]s, formed by voids between boulders, in [[Yosemite National Park]].<ref name="nps2017">{{cite web |title=Pseudoscorpion: Unique to Yosemite – Yosemite National Park (U.S. National Park Service) |url=https://www.nps.gov/yose/learn/nature/pseudoscorpion.htm |website=www.nps.gov |publisher=U.S National Park Service |access-date=21 July 2024 |language=en}}</ref>

== Distribution == The species is endemic to [[granite]] [[talus cave]]s in [[Yosemite National Park]] in California, United States.<ref name="Cokendolpher2010">{{cite journal |last1=Cokendolpher |first1=James C. |last2=Krejca |first2=Jean K. |title=A new cavernicolous Parobisium Chamberlin 1930 (Pseudoscorpiones: Neobisiidae) from Yosemite National Park, U.S.A |journal=KIP Articles |series=Occasional papers |date=30 September 2010 |doi=10.5962/bhl.title.156953 |url=https://digitalcommons.usf.edu/cgi/viewcontent.cgi?article=6787&context=kip_articles |access-date=21 July 2024 |publisher=Museum of Texas Tech University}}</ref> The [[Type (biology)|type specimens]] were found in two caves less than {{convert|0.5|km|mi}} within a single [[talus slope|scree]]. As the talus caves it inhabits are likely only a few hundred years old, it is thought that the pseudoscorpions migrate between different talus slopes and caves.

== Description == Like other [[troglofauna]],<ref name="Chapman">{{cite journal |author=Phil Chapman |title=The Origins of Troglobites |journal=Proceedings of the University of Bristol Spelæological Society |year=1982 |volume=16 |issue=2 |pages=133–141 |url=http://www.ubss.org.uk/resources/proceedings/vol16/UBSS_Proc_16_2_133-141.pdf }}</ref> ''P. yosemite'' is blind with absent posterior eyes and a lack of a [[tapetum lucidum]], and displays unusual pigmentation.<ref name="nps2017" /> The pseudoscorpion is potentially the first North American troglobite documented in a talus cave.<ref name="Cokendolpher2010" />

==Ecology== ''P. yosemite'' has been observed preying on ''[[Sinella]]'' springtails. It may also potentially prey on other invertebrates in its cave environment, including mites, spiders, beetles and ants.<ref name="nps2017" />

== Etymology == The species' namesake is [[Yosemite National Park]].<ref name="nps2017" />

==References== {{reflist}}

==External links== *[https://www.youtube.com/watch?v=SSj2uXbfKhY Yosemite's Own Pseudoscorpion ]

[[Category:Neobisiidae]] [[Category:Animals described in 2010]] [[Category:Arachnids of North America]] [[Category:Cave arachnids]]