Pallid Dotted-Blue
Euphilotes pallescens (Tilden & Downey, 1955)
Family: Lycaenidae
Subfamily: Polyommatinae
Identification: Upperside of male pale blue often without aurora. Upperside of female grayish brown with gray overscales on the wing bases. Underside almost white with distinct black spots; orange marginal hindwing band usually present but narrow.
Wing Span: 5/8 - 13/16 inches (1.6 - 2.1 cm).
Life History: Pallid Dotted-Blues stay near their host plants. Males patrol around the plants all day to find females. Eggs are laid singly on flowers of the host. Caterpillars feed on flowers and fruits, and are tended by ants.
Flight: One flight from early July to September.
Caterpillar Hosts: Wild buckwheat species including Kearney\'s Buckwheat and Plumate Buckwheat.
Adult Food: Nectar from Eriogonum flowers.
Habitat: Arid areas such as desert flats and edges of sand dunes.
Range: Southeast California, Nevada, southern Utah, and northern Arizona
Conservation: Some populations are of concern because of limited habitat or threats to habitats.
NCGR: G3,G4 - . Very rare or local throughout its range or found locally in a restricted range OR Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery. Several subspecies are rank T1 - Critically imperiled because of extreme rarity (5 or fewer occurrences, or very few remaining individuals), or because of some factor of its biology making it especially vulnerable to extinction. (Critically endangered throughout its range).
Management Needs: Maintain habitat integrity. Monitor invasion by exotic weeds-primarily cheatgrass, and disruption by off-road vehicles.
Comments: NULL
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Verified Sightings
Displaying 1 - 24 of 85 verified sightings
Observation date: Jul 29, 2024
Submitted by: ASchmierer
Region: Lassen County, California, United States
Verified by: Ken Davenport
Verified date: Aug 02, 2024
Observation date: Aug 26, 2020
Submitted by: Robb Hannawacker
Region: Grand County, Utah, United States
Verified by: James Steen
Verified date: Sep 11, 2023
Observation date: Aug 04, 2017
Submitted by: Mark Salvato
Region: Mono County, California, United States
Verified by: Ken Davenport
Verified date: Feb 07, 2023
Observation date: Sep 03, 2020
Submitted by: Robb Hannawacker
Region: San Juan County, Utah, United States
Verified by: RaisingButterfl...
Verified date: Dec 16, 2021
Observation date: Sep 05, 2021
Submitted by: cklindsey
Region: San Bernardino County, California, United States
Verified by: Ken Davenport
Verified date: Sep 06, 2021
Observation date: Aug 28, 2021
Submitted by: guy_incognito
Region: San Bernardino County, California, United States
Verified by: Ken Davenport
Verified date: Aug 28, 2021
Observation date: Jul 12, 1988
Submitted by: legacy.reporter (Gordon Pratt)
Region: White Pine County, Nevada, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 01, 2012
Observation date: Jul 24, 1996
Submitted by: legacy.reporter (John B. Vernon)
Region: Humboldt County, Nevada, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 01, 2012
Observation date: Aug 29, 1983
Submitted by: legacy.reporter (George T. Austin)
Region: Esmeralda County, Nevada, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 01, 2012
Observation date: Aug 16, 1978
Submitted by: legacy.reporter (Oakley Shields)
Region: Lincoln County, Nevada, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 01, 2012
Observation date: Jul 24, 1996
Submitted by: legacy.reporter (John B. Vernon)
Region: Humboldt County, Nevada, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 01, 2012
Observation date: Aug 18, 1978
Submitted by: legacy.reporter (Oakley Shields)
Region: Lincoln County, Nevada, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 01, 2012
Observation date: Sep 22, 2007
Submitted by: RaisingButterfl...
Region: Humboldt County, Nevada, United States
Verified by: BAMONA
Verified date: Nov 28, 2011
Observation date: Aug 24, 2011
Submitted by: RaisingButterfl...
Region: Juab County, Utah, United States
Verified by: BAMONA
Verified date: Nov 28, 2011
Observation date: Sep 04, 2007
Submitted by: RaisingButterfl...
Region: Juab County, Utah, United States
Verified by: BAMONA
Verified date: Nov 28, 2011
Observation date: Sep 28, 2011
Submitted by: Ken Davenport (Ken Davenport)
Region: Kern County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: May 01, 2011
Observation date: Jul 17, 2010
Submitted by: Ken Davenport (Ken Davenport)
Region: Kern County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 31, 2010
Observation date: Jul 17, 2010
Submitted by: Ken Davenport (Ken Davenport)
Region: Kern County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 31, 2010
Observation date: Jul 17, 2010
Submitted by: Ken Davenport (Ken Davenport)
Region: Kern County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 31, 2010
Observation date: unknown
Submitted by: BAMONA
Region:
Verified by: BAMONA
Verified date: Sep 06, 2010
Observation date: Jul 15, 1982
Submitted by: legacy.reporter (Gordon Pratt, J. Emmel)
Region: Inyo County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 07, 2010
Observation date: Aug 01, 1993
Submitted by: legacy.reporter (S. Mattoon & C. Hageman)
Region: Lassen County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 07, 2010
Observation date: Jul 10, 1983
Submitted by: legacy.reporter (G. Pratt, J. Emmel)
Region: Inyo County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 07, 2010
Observation date: Jul 29, 1993
Submitted by: legacy.reporter (John & Tom Emmel)
Region: Lassen County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 07, 2010
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