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.
By default, the fifty most recently verified sightings are below. Sort by Observation Date to see the most recent sightings, or filter the sightings by region to get a regional list.
| Observation Date | Submitter | Region |
Verified Date |
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|---|---|---|---|---|---|
| January 01, 1950 | legacy.reporter | Alaska, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Mohave County, Arizona, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Coconino County, Arizona, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Coconino County, Arizona, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Navajo County, Arizona, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Apache County, Arizona, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Apache County, Arizona, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Yavapai County, Arizona, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Gila County, Arizona, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Graham County, Arizona, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Apache County, Arizona, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Pima County, Arizona, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Santa Cruz County, Arizona, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Cochise County, Arizona, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Alameda County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Alpine County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Amador County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Butte County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Calaveras County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Colusa County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Del Norte County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | El Dorado County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Glenn County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Humboldt County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Inyo County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Kern County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Kings County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Lake County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Lassen County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Los Angeles County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Madera County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Marin County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Mariposa County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Mendocino County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Modoc County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Mono County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Monterey County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Napa County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Nevada County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Orange County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Placer County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Plumas County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Riverside County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | San Benito County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | San Bernardino County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | San Diego County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | San Francisco County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | San Luis Obispo County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | San Mateo County, California, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Santa Barbara County, California, United States | December 31, 2004 | Details |
