Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

Bauer's Dotted-Blue
Euphilotes baueri (Shields, 1975)
Family: Lycaenidae
Subfamily: Polyommatinae
Identification: Male pale blue above without orange hindwing band. Female gray-brown with blue scaling extensive to almost none. Orange aurora band on outer edge of hindwing ranging from medium to absent. Underside snowy white with distinct black line on wing margins. Black spotting bold. Pale orange band on margin of hindwing narrow.
Wing Span: 3/4 - 7/8 inches (1.9 - 2.2 cm).
Life History: Males patrol all day near host plants to find receptive females. Eggs are laid singly on host plant flowers; caterpillars eat flowers and fruits, and are protected by ants. Chrysalids hibernate in sand or leaf litter.
Flight: One flight; mid-April to late June.
Caterpillar Hosts: Various wild buckwheats (Eriogonum species)
Adult Food: Flower nectar especially that from Eriogonum species.
Habitat: Dry slopes and flats with scattered short brush.
Range: East and northeastern California, Nevada, and western Arizona.
Conservation: Habitats may be susceptible to invasion by cheatgrass. Surveys should be undertaken.
NCGR: G2,G3 - for species. Imperiled because of rarity (6 to 20 occurrences), or because of other factors demonstrably making it very vulnerable to extinction throughout its range. (Endangered throughout its range). OR very rare or local throughout its range or found locally in a restricted range . The Nature Conservancy rank of 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) applies to a subspecies from the San Bernardino Mountains of southern California.
Management Needs: Maintain habitat together with host plants of all known populations. Survey populations and their susceptibility to invasive alien weeds.
Comments: NULL

Verified Sightings

Displaying 1 - 19 of 19 verified sightings
Observation date: Jul 21, 2022
Submitted by: greenfant
Region: Harney County, Oregon, United States
Verified by: Ken Davenport
Verified date: Sep 14, 2022
  Details
Observation date: Apr 13, 1969
Submitted by: legacy.reporter (unknown)
Region: Clark County, Nevada, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Dec 01, 2012
  Details
Observation date: May 23, 1980
Submitted by: legacy.reporter (John F. Emmel)
Region: Nye County, Nevada, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 01, 2012
  Details
Observation date: Jun 23, 2010
Submitted by: legacy.reporter (Paul Opler Evi Buckner-Opler)
Region: Humboldt County, Nevada, United States
Verified by: paulopler (Paul Opler)
Verified date: Dec 31, 2010
  Details
Observation date: May 02, 1986
Submitted by: legacy.reporter (Gordon F. Pratt)
Region: San Bernardino County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 07, 2010
  Details
Observation date: May 06, 1985
Submitted by: legacy.reporter (Gordon F. Pratt)
Region: San Bernardino County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 07, 2010
  Details
Observation date: Apr 16, 1989
Submitted by: legacy.reporter (Gordon F. Pratt)
Region: San Bernardino County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 07, 2010
  Details
Observation date: May 01, 1985
Submitted by: legacy.reporter (Gordon F. Pratt)
Region: San Bernardino County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 07, 2010
  Details
Observation date: May 03, 2005
Submitted by: legacy.reporter (Gordon Pratt)
Region: San Bernardino County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 07, 2010
  Details
Observation date: May 23, 1967
Submitted by: legacy.reporter (David L. Nauer)
Region: Inyo County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Jan 07, 2010
  Details
Observation date: May 13, 2006
Submitted by: Ken Davenport (Ken Davenport)
Region: Inyo County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Oct 16, 2009
  Details
Observation date: May 06, 1985
Submitted by: Ken Davenport (Ken Davenport)
Region: Inyo County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Oct 16, 2009
  Details
Observation date: May 07, 1985
Submitted by: Ken Davenport (Ken Davenport)
Region: Inyo County, California, United States
Verified by: Ken Davenport (Ken Davenport)
Verified date: Oct 16, 2009
  Details
Observation date: May 19, 1983
Submitted by: legacy.reporter (Sterling O. Mattoon)
Region: Mono County, California, United States
Verified by: legacy.verifier (Sterling O. Mattoon)
Verified date: Jan 23, 2008
  Details
Observation date: unknown
Submitted by: legacy.reporter
Region: Mohave County, Arizona, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
  Details
Observation date: unknown
Submitted by: legacy.reporter
Region: Lincoln County, Nevada, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
  Details
Observation date: unknown
Submitted by: legacy.reporter
Region: Inyo County, California, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
  Details
Observation date: unknown
Submitted by: legacy.reporter
Region: Washington County, Utah, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
  Details
Observation date: unknown
Submitted by: legacy.reporter
Region: Nye County, Nevada, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
  Details