Xerces blue

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Xerces blue
Glaucopsyche xerces.jpg
Samples of the extinct Glaucopsyche xerces butterfly in the collections of the Field Museum of Natural History
Status iucn3.1 EX.svg
Extinct  (early 1940s)  (IUCN 3.1) [1]
Status TNC GX.svg
Presumed Extinct  (early 1940s)  (NatureServe) [2]
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Lepidoptera
Family: Lycaenidae
Genus: Glaucopsyche
Species:
G. xerces
Binomial name
Glaucopsyche xerces
(Boisduval, 1852)
Synonyms
  • Glaucopsyche lygdamus xerces

The Xerces blue (Glaucopsyche xerces) is a recently extinct species of butterfly in the gossamer-winged butterfly family, Lycaenidae. The species lived in coastal sand dunes of the Sunset District of the San Francisco Peninsula in California. The Xerces blue is believed to be the first American butterfly species to become extinct as a result of loss of habitat caused by urban development. The last Xerces blue was seen in 1941 or 1943 [3] on land that is now part of the Golden Gate National Recreation Area. [4]

Contents

Name

The specific name derives from the French spelling of "Xerxes", the Greek name of the Persian kings Xerxes I and Xerxes II of the fifth century BC. [5] An endangered invertebrate conservation group known as the Xerces Society is named after the Xerces blue. [6] [7]

Taxonomy

Genetic analysis of museum specimens published in 2021 confirmed that the Xerces blue represented a distinct species within the genus Glaucopsyche , with its closest relatives being Glaucopsyche australis and Glaucopsyche pseudoxerces, with this group most closely related to Glaucopsyche lygdamus (the silvery blue). [8]

Specimens in California Academy of Sciences Xerces Blue.jpg
Specimens in California Academy of Sciences

Extinction and ecology

The species was first described and documented in 1852. [9] It was characterized by blue wings with white spots. [10] The butterflies fed on vegetation belonging to the genus Lotus and Lupinus . [10] The loss of the Lotus plant that the butterfly fed on while in its larval stages is believed to be one reason for the extinction of the Xerces blue. The plant could not survive in the disturbed soils due to human development, and was no longer available to the Xerces blue. [9] [10] Lupinus, the Xerces blue's other vegetative food source, was not suitable for the larval stages. [10]

Preserved specimens are found in California Academy of Sciences, Bohart museum, and the Harvard Museum of Natural History. [9]

Reestablishment efforts

Efforts are on to reestablish related butterflies in the Xerces blue's former habitat. The Palos Verdes blue (Glaucopsyche lygdamus palosverdesensis), which is considered a Los Angeles cousin of the Xerces, is being reared in labs.[ citation needed ] A new Xerces-like subspecies of the silvery blue ( Glaucopsyche lygdamus ), which the Xerces blue was thought to be a subspecies of [11] has been discovered as well, and is being analyzed as a potential way to revive the Xerces blue. [12]

Related Research Articles

<i>Lupinus</i> Genus of leguminous plants

Lupinus, commonly known as lupin, lupine, or regionally bluebonnet, is a genus of plants in the legume family Fabaceae. The genus includes over 199 species, with centers of diversity in North and South America. Smaller centers occur in North Africa and the Mediterranean. They are widely cultivated, both as a food source and as ornamental plants, but are invasive to some areas.

<span class="mw-page-title-main">Palos Verdes blue</span> Subspecies of butterfly

The Palos Verdes blue is a small endangered butterfly native to the Palos Verdes Peninsula in southwest Los Angeles County, California, United States. As its distribution has been proven to be limited to one single site it has one of the best claims to being the world's rarest butterfly.

<span class="mw-page-title-main">Xerces Society</span> Non-profit conservation organization

The Xerces Society for Invertebrate Conservation is a non-profit environmental organization that focuses on the conservation of invertebrates considered to be essential to biological diversity and ecosystem health. It is named in honor of an extinct California butterfly, the Xerces blue.

<span class="mw-page-title-main">Lycaenidae</span> Family of butterflies

Lycaenidae is the second-largest family of butterflies, with over 6,000 species worldwide, whose members are also called gossamer-winged butterflies. They constitute about 30% of the known butterfly species.

<span class="mw-page-title-main">Coastal sage scrub</span> Shrubland plant community of California

Coastal sage scrub, also known as coastal scrub, CSS, or soft chaparral, is a low scrubland plant community of the California coastal sage and chaparral subecoregion, found in coastal California and northwestern coastal Baja California. It is within the California chaparral and woodlands ecoregion, of the Mediterranean forests, woodlands, and scrub biome.

<i>Phengaris alcon</i> Species of butterfly

Phengaris alcon, the Alcon blue or Alcon large blue, is a butterfly of the family Lycaenidae and is found in Europe and across the Palearctic to Siberia and Mongolia.

<span class="mw-page-title-main">Fender's blue butterfly</span> Endangered subspecies of Boisduvals blue

Fender's blue butterfly is a subspecies of Boisduval's blue endemic to the Willamette Valley of northwestern Oregon, United States. The potential range of the butterfly extends from south and west of Portland, OR to south of Eugene, OR. The butterfly is host-specific on the Kincaid's lupine, which it relies on for reproduction and growth. The male and female can be identified by their difference in wing color. The Fender's Blue Butterfly was added to the endangered species list in January 2000, but as of February of 2023, has been reclassified as "threatened". The Fender's blue butterfly population has increased over the past 20 years and projected to increase more through conservation efforts. In Willamette Valley, Oregon, there are currently 90 sites filled with Fender's blue.

<span class="mw-page-title-main">Mission blue butterfly</span> Subspecies of butterfly

The Mission blue is a blue or lycaenid butterfly subspecies native to the San Francisco Bay Area of the United States. The butterfly has been declared as endangered by the US federal government. It is a subspecies of Boisduval's blue.

<i>Lupinus perennis</i> Species of legume

Lupinus perennis is a flowering plant in the family Fabaceae.

<i>Glaucopsyche</i> Butterfly genus in family Lycaenidae

Glaucopsyche, commonly called blues, is a Holarctic genus of butterfly in the family Lycaenidae, found mainly in Palearctic Asia. For other species called "blues" see subfamily Polyommatinae and genus Plebejus.

<i>Lupinus albifrons</i> Species of legume

Lupinus albifrons, silver lupine, white-leaf bush lupine, or evergreen lupine, is a species of lupine (lupin). It is native to California and Oregon, where it grows along the coast and in dry and open meadows, prairies and forest clearings. It is a member of several plant communities, including coastal sage scrub, chaparral, northern coastal scrub, foothill woodland, and yellow pine forest.

<i>Glaucopsyche lygdamus</i> Species of butterfly

Glaucopsyche lygdamus, the silvery blue, is a small butterfly native to North America.

<i>Lupinus formosus</i> Species of legume

Lupinus formosus, the summer lupine or western lupine, is a species of flowering plant in the legume family, Fabaceae. It is native to California and Oregon in the United States.

Lupinus elatus is a species of lupine known by the common name tall silky lupine. It is endemic to California, where it is known from the Transverse Ranges above Los Angeles, and possibly also from the southernmost slopes of the Sierra Nevada. Its habitat includes dry areas in the forests of the mountains. This is an erect perennial herb reaching a maximum height near 90 centimeters. Each palmate leaf is made up of 6 to 8 leaflets up to 8 centimeters long. The herbage is coated in silvery silky to woolly hairs. The inflorescence is a long raceme of flowers, each about a centimeter long and arranged in whorls. The flower is purple or blue with a pale yellow patch on its banner. It yields a legume pod 2 or 3 centimeters long. This is a host plant to the Southern California native butterfly subspecies known as the San Gabriel Mountains Arrowhead Blue.

<i>Lupinus latifolius</i> Species of legume

Lupinus latifolius is a species of lupine known by the common name broadleaf lupine. It is native to western North America from British Columbia to Baja California to New Mexico, where it is common and can be found in several types of habitat. There are several subtaxa, described as subspecies or varieties, some common and some rare. They vary in morphology. In general this plant is an erect perennial herb. It grows 30 centimeters to over two meters in height, in texture hairy to nearly hairless. Each palmate leaf is made up of several leaflets, those on larger plants up to 10 centimeters long. The inflorescence bears many flowers, sometimes in whorls. Each flower is one to two centimeters in length, purple to blue to white in color, the spot on its banner yellowish, pinkish, or white.

<i>Lupinus littoralis</i> Species of legume

Lupinus littoralis is a species of lupine known by the common name seashore lupine. It is native to the coastline of western North America from British Columbia to northern California, where it grows in sandy habitat.

<i>Icaricia icarioides</i> Species of butterfly

Icaricia icarioides, or Boisduval's blue, is a butterfly of the family Lycaenidae found in North America. This butterfly has 25 recognized subspecies.

The U.S. state of California has instituted numerous conservation programs, policies, laws, reserves and Habitat restoration projects throughout the state to facilitate the health and migration of the western population of the monarch butterfly. The population of western monarchs require very different breeding and overwintering habitat when compared to the eastern population of monarch butterflies. They require specific micro-climatic conditions to survive the winter and they are sensitive to habitat changes at the overwintering sites. The large aggregations of butterflies are seen as the most vulnerable at their overwintering locations along the coast. Many monarch overwintering sites are contained within the "coastal zone"; an area defined by the Coastal Zone Management Act to be 1000 yards inland from the high tide mark. Large number of overwintering sites are outside the coastal zone. There are more than 450 overwintering sites in California.

<i>Camponotus herculeanus</i> Species of ant known as the Hercules ant

Camponotus herculeanus is a species of ant in the genus Camponotus, the carpenter ants, occurring in Northern Eurasia, from Norway to Eastern Siberia, and North America. First described as Formica herculeana by Linnaeus in 1758, the species was moved to Camponotus by Mayr in 1861.

References

  1. World Conservation Monitoring Centre (1996). "Glaucopsyche xerces". IUCN Red List of Threatened Species . 1996: e.T9244A12971422. doi: 10.2305/IUCN.UK.1996.RLTS.T9244A12971422.en . Retrieved 20 November 2021.
  2. "NatureServe Explorer 2.0". explorer.natureserve.org. Retrieved 1 November 2022.
  3. Powell, J.A.; Hogue, C.L. (1979). California Insects. University of California Press. ISBN   978-0-520-03782-3.
  4. Garth, J.S.; Tilden, J.W. (1986). California Butterflies . University of California Press. ISBN   0520052498.
  5. "xerxes | Origin and meaning of xerxes by Online Etymology Dictionary". www.etymonline.com. Retrieved 2021-02-20.
  6. "About the Xerces Society | Xerces Society". xerces.org. Retrieved 2021-02-20.
  7. "Mission". www.guidestar.org. Retrieved 2021-02-20.
  8. Grewe, Felix; Kronforst, Marcus R.; Pierce, Naomi E.; Moreau, Corrie S. (July 2021). "Museum genomics reveals the Xerces blue butterfly ( Glaucopsyche xerces ) was a distinct species driven to extinction". Biology Letters. 17 (7): 20210123. doi:10.1098/rsbl.2021.0123. ISSN   1744-957X. PMC   8292013 . PMID   34283930.
  9. 1 2 3 Resources, University of California Agriculture and Natural. "And Then There Were None: Bohart Museum Remembering Xerces Blue Butterfly In Effort to Help Preserve Other Species". entomology.ucdavis.edu. Retrieved 2017-04-13.
  10. 1 2 3 4 Tilden, J. W. (1956). "San Francisco's Vanishing Butterflies" (PDF). The Lepidopterists' News: 113–115.
  11. Grewe, Felix; Kronforst, Marcus R.; Pierce, Naomi E.; Moreau, Corrie S. (2021). "Museum genomics reveals the Xerces blue butterfly ( Glaucopsyche xerces ) was a distinct species driven to extinction". Biology Letters. 17 (7). doi:10.1098/rsbl.2021.0123. PMC   8292013 . PMID   34283930. S2CID   236144945.
  12. "Wild Genomes - Awarded Projects - Revive & Restore".