Attributes of Cupido amyntula
Western Tailed-Blue
Cupido amyntula (Boisduval, 1852)
Family: Lycaenidae
Subfamily: Polyommatinae
Identification: Narrow tail on hindwing. Upperside of male blue, female brown with blue at wing base. Underside white with black spots indistinct or lacking; single small orange spot near tail.
Wing Span: 7/8 - 1 1/8 inches (2.2 - 2.9 cm).
Life History: Males patrol and perch during the day. Females lay eggs on flowers or young seedpods of host plant. Caterpillars eat young seeds inside the pod, where they overwinter and pupate.
Flight: March-July. Several broods in southern California, a partial second brood in the southern Rocky Mountains, and one brood elsewhere.
Caterpillar Hosts: Legumes with inflated pods including false lupine (Thermopsis), milkvetch (Astragalus), crazyweed (Oxytropis), and vetches (Vicia and Lathyrus).
Adult Food: Flower nectar.
Habitat: Open - usually native - areas with low shrubs including chaparral, meadows, and open woodland.
Range: Alaska south through western North America and all western mountains to northern Baja California, east across Canada's prairie provinces to northern Michigan, Ontario, and the Gaspé Peninsula.
Conservation: Not usually required.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Taxonomy Notes:
Images of Cupido amyntula
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The map below displays all verified sighting records in the BAMONA database for this species. Each record is indicated with a yellow dot. The orange dots on the map provide access to information about the 400 most recently verified sightings of this species. In some instances, there are several records at the same location. Use the table view to access these records.
Instructions: Click on the map and move your mouse to pan.
Zoom by using the plus [+] and minus [-] on the left side of the map.
To change which map layers are displayed, click on the plus sign [+] on the right side of the map.
The fifty most recently verified sightings are below. See more recently verified sightings of all species.
| Observation Date | Submitter | Region |
Verified Date |
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|---|---|---|---|---|---|
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May 19, 2012 | plex1ppus | Pend Oreille County, Washington, United States | April 05, 2013 | Details |
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May 20, 2012 | Ethan Hall | Cache County, Utah, United States | December 20, 2012 | Details |
| July 09, 1982 | legacy.reporter (K Hansen-S. Mattoon) | Lander County, Nevada, United States | December 01, 2012 | Details | |
| June 28, 1987 | legacy.reporter (George T. Austin) | Humboldt County, Nevada, United States | December 01, 2012 | Details | |
| June 20, 1990 | legacy.reporter (David Eiler) | Elko County, Nevada, United States | December 01, 2012 | Details | |
| May 25, 1978 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| June 05, 1979 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| June 13, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| June 22, 1968 | legacy.reporter (Anna Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| May 31, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| June 08, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| June 17, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| June 13, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| July 28, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| June 17, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
| July 29, 1977 | legacy.reporter (George T. Austin) | Clark County, Nevada, United States | December 01, 2012 | Details | |
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June 30, 2012 | jmj2012 | Iowa County, Wisconsin, United States | August 14, 2012 | Details |
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August 04, 2012 | janet tubb | Ontario, Canada | August 05, 2012 | Details |
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June 16, 2012 | plex1ppus | Mineral County, Montana, United States | July 25, 2012 | Details |
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June 20, 2009 | hjbarkey9 | Routt County, Colorado, United States | July 21, 2012 | Details |
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May 23, 2012 | Amateur Entomologist | San Luis Obispo County, California, United States | June 22, 2012 | Details |
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June 16, 2012 | PDunwiddie | Kittitas County, Washington, United States | June 18, 2012 | Details |
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May 27, 2012 | PDunwiddie | Yakima County, Washington, United States | June 04, 2012 | Details |
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May 11, 2012 | AKimages | San Diego County, California, United States | May 13, 2012 | Details |
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April 08, 2012 | mudgrub12 | Placer County, California, United States | April 11, 2012 | Details |
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June 21, 2011 | coreyk | Clark County, Nevada, United States | February 12, 2012 | Details |
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April 28, 2011 | coreyk | Clark County, Nevada, United States | February 06, 2012 | Details |
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June 08, 2008 | pcastrovillo | Boise County, Idaho, United States | February 06, 2012 | Details |
| June 26, 2012 | Ken Davenport (Ken Davenport) | Mono County, California, United States | January 01, 2012 | Details | |
| June 09, 1977 | legacy.reporter (Richard Bailowitz) | Santa Cruz County, Arizona, United States | January 01, 2012 | Details | |
| July 11, 2011 | legacy.reporter (John Pasko) | Washoe County, Nevada, United States | January 01, 2012 | Details | |
| July 04, 2011 | legacy.reporter (Nick Lethaby) | Santa Barbara County, California, United States | January 01, 2012 | Details | |
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April 29, 2007 | RaisingButterflies.org | Salt Lake County, Utah, United States | November 28, 2011 | Details |
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June 21, 2008 | RaisingButterflies.org | Utah County, Utah, United States | November 26, 2011 | Details |
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May 27, 2009 | RaisingButterflies.org | Davis County, Utah, United States | November 26, 2011 | Details |
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June 05, 2011 | gerryq | Latah County, Idaho, United States | November 11, 2011 | Details |
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June 10, 2011 | Matt ODonnell | Bernalillo County, New Mexico, United States | September 11, 2011 | Details |
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May 21, 2011 | Matt ODonnell | Bernalillo County, New Mexico, United States | August 08, 2011 | Details |
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May 29, 2011 | Jdammarell | Pend Oreille County, Washington, United States | July 23, 2011 | Details |
| June 11, 2011 | davidwdroppers | Chelan County, Washington, United States | June 15, 2011 | Details | |
| June 29, 1987 | legacy.reporter (unknown) | Alpine County, California, United States | May 01, 2011 | Details | |
| July 01, 1987 | legacy.reporter (unknown) | Tuolumne County, California, United States | May 01, 2011 | Details | |
| June 26, 2005 | legacy.reporter (William Bouton) | Inyo County, California, United States | May 01, 2011 | Details | |
| March 26, 2005 | legacy.reporter (Kim Davis & Mike Stangeland) | San Diego County, California, United States | May 01, 2011 | Details | |
| March 26, 2005 | legacy.reporter (Kim Davis & Mike Stangeland) | San Diego County, California, United States | May 01, 2011 | Details | |
| May 14, 2004 | legacy.reporter (William Bouton) | San Luis Obispo County, California, United States | May 01, 2011 | Details | |
| July 04, 2011 | legacy.reporter (Nick Lethaby) | Santa Barbara County, California, United States | May 01, 2011 | Details | |
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January 07, 2011 | Tom Barnes | San Diego County, California, United States | January 14, 2011 | Details |
| July 04, 1984 | Ken Davenport (Ken Davenport) | Coconino County, Arizona, United States | January 01, 2011 | Details | |
| June 03, 2011 | Ken Davenport (Ken Davenport) | Coconino County, Arizona, United States | January 01, 2011 | Details |
