| 词条 | Sand Mountain blue |
| 释义 |
|image = Sand Mountain Blue Butterfly.jpg |image_alt = Euphilotes pallescens arenamontana |image_caption = Euphilotes pallescens arenamontana |status = T1 |status_system = TNC |status_ref = [1] |genus = Euphilotes |species = pallescens |subspecies = arenamontana |authority = Austin, 1998 }} The Sand Mountain blue (Euphilotes pallescens arenamontana) is a butterfly of the gossamer winged variety that is only found around the Sand Mountain Recreation Area near Fallon, Nevada. This species is one of several belonging to the "blue" subfamily of Lycaenidae.[2] Biological characteristicsThese butterflies are known for their almost complete dependence upon Kearney buckwheat; eating the fallen leaves of the plant as larvae, and drinking the nectar of the flowers as adults - however, the adults occasionally feed on other plant species. Like many gossamer-winged butterflies, Sand Mountain blues have a close relationship with ants; in this case, desert carpenter ants feed on a sugary secretion of the larvae; whether the larvae also benefit or not is yet to be determined. Once the larvae metamorphose into the pupal stage, rather than remaining fixed to buckwheat plant, the chrysalis drops into the leaf litter at the base. Upon reaching adulthood, E. pallescens arenamontana typically measure anywhere between {{convert|10.0|mm|in|abbr=on}} and {{convert|11.9|mm|in|abbr=on}}. The species is not known to migrate, and stays within {{convert|200|ft|m|abbr=on}} of its host plant. The lifespan of an adult Sand Mountain blue is approximately one week.[2][3] StatusThe Sand Mountain blue species, E. pallescens has been officially classified as being vulnerable, while the subspecies E. p. arenamontana has been labeled as critically imperiled, at great risk of extinction.[1] In 2004 a petition was filed to investigate the status of the Sand Mountain blue and whether it should be placed on the endangered or threatened species lists. Currently Sand Mountain blues are referred to as "rare" because of their small geographical distribution around the Sand Mountain dune.[3] In March 2007, several off-road vehicle trails were closed off in order to protect the species and its host plant from intrusion.[4] References1. ^1 NatureServe. 2017. NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, Virginia. Available http://explorer.natureserve.org/servlet/NatureServe?sourceTemplate=tabular_report.wmt&loadTemplate=species_RptComprehensive.wmt&selectedReport=RptComprehensive.wmt&summaryView=tabular_report.wmt&elKey=121198&paging=home&save=true&startIndex=1&nextStartIndex=1&reset=false&offPageSelectedElKey=121198&offPageSelectedElType=species&offPageYesNo=true&post_processes=&radiobutton=radiobutton&selectedIndexes=121198 . (Accessed: September 27, 2017 ). 2. ^1 {{cite web|title=Sand Mountain Blue Butterfly|url=http://www.fws.gov/nevada/nv_species/smb_butterfly.html|publisher=Nevada Fish and Wildlife Office|accessdate=2007-03-24}} 3. ^1 {{cite web|title=Petition to list the Sand Mountain Blue Butterfly as a Threatened or Endangered Species Under the U.S. Endangered Species Act|url=http://www.fws.gov/nevada/nv_species/documents/smbb/smbb_petition.pdf|author=Center for Biological Diversity |author2=Xerces Society |author3=Public Employees for Environmental Responsibility |author4=Nevada Outdoor Recreation Association |accessdate=2007-03-24}} 4. ^{{cite web|title=Move to protect butterfly steps on off-roaders|url=http://www.msnbc.msn.com/id/17722427|publisher=MSNBC|accessdate=2007-03-24}} External links
6 : Euphilotes|Butterflies described in 1998|Butterflies of North America|Pollinator insects|Fauna of the Western United States|Subspecies |
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