Great Basin Fritillary
Speyeria egleis (Behr, 1862)
Family: Nymphalidae
Subfamily: Heliconiinae
Identification: Upperside bright to dull orange-brown with dark markings evenly spaced. Underside of hindwing has triangular, silver submarginal spots; other spots small with brown edging; spots may or may not be silvered.
Wing Span: 1 3/4 - 2 3/8 inches (4.5 - 6 cm).
Life History: Males patrol during the day for females, who lay eggs on leaf litter near violets. First-stage caterpillars hibernate unfed until spring, when they feed on violet leaves.
Flight: One brood from late June-August.
Caterpillar Hosts: Violets including Viola adunca, V. nuttallii, V. purpurea, and V. walteri.
Adult Food: Flower nectar.
Habitat: Mountain meadows, forest openings, exposed rocky ridges.
Range: North Dakota southwest through Oregon to California, south to Colorado.
Conservation: Not usually of concern but subspecies tehachapina has a very small range and could be devastated by a single event. Speyeria egleis tehachapina has The Nature Conservancy rank of T3 -Very rare or local throughout its range or found locally in a restricted range (21 to 100 occurrences). (Threatened throughout its range). Speyeria egleis as a whole has the The Nature Conservancy Global Rank of G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
NCGR:
Management Needs: Monitor subspecies tehachapina and evaluate for conservation action.
Comments: NULL
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Verified Sightings
Displaying 1 - 24 of 389 verified sightings
Observation date: Jul 20, 2021
Submitted by: mstanek
Region: Mariposa County, California, United States
Verified by: Ken Davenport
Verified date: Jul 21, 2021
Observation date: Jun 28, 2021
Submitted by: tideport
Region: Nevada County, California, United States
Verified by: Ken Davenport
Verified date: Jul 03, 2021
Observation date: Jul 26, 2020
Submitted by: gasigr
Region: Klamath County, Oregon, United States
Verified by: Ken Davenport
Verified date: Mar 30, 2021
Observation date: Aug 14, 2020
Submitted by: Shearwater13
Region: Washoe County, Nevada, United States
Verified by: Ken Davenport
Verified date: Aug 18, 2020
Observation date: Aug 08, 2020
Submitted by: Shearwater13
Region: Walla Walla County, Washington, United States
Verified by: davidwdroppers
Verified date: Aug 10, 2020
Observation date: Jul 25, 2020
Submitted by: papilio1
Region: Washoe County, Nevada, United States
Verified by: Ken Davenport
Verified date: Jul 29, 2020
Observation date: Jul 20, 2020
Submitted by: Gary Nordell
Region: Siskiyou County, California, United States
Verified by: Ken Davenport
Verified date: Jul 20, 2020
Observation date: Jul 09, 2020
Submitted by: Gary Nordell
Region: California, United States
Verified by: Ken Davenport
Verified date: Jul 15, 2020
Observation date: Aug 29, 2019
Submitted by: Robert Gorman
Region: California, United States
Verified by: Ken Davenport
Verified date: Dec 09, 2019
Observation date: Jun 29, 2019
Submitted by: gasigr
Region: Jackson County, Oregon, United States
Verified by: Ken Davenport
Verified date: Nov 04, 2019
Observation date: Jul 29, 2019
Submitted by: gkingery
Region: Placer County, California, United States
Verified by: Ken Davenport
Verified date: Aug 01, 2019
Observation date: Jul 14, 2019
Submitted by: Scott Burgess
Region: Humboldt County, California, United States
Verified by: Ken Davenport
Verified date: Jul 18, 2019
Observation date: Aug 06, 2006
Submitted by: hydapse
Region: Park County, Wyoming, United States
Verified by: J_Martineau
Verified date: Mar 07, 2019
Observation date: Jul 14, 2018
Submitted by: gasigr
Region: Crook County, Oregon, United States
Verified by: Ken Davenport
Verified date: Mar 05, 2019
Observation date: Jul 14, 2018
Submitted by: gasigr
Region: Crook County, Oregon, United States
Verified by: Ken Davenport
Verified date: Mar 05, 2019
Observation date: Jun 29, 2009
Submitted by: hydapse
Region: Carbon County, Montana, United States
Verified by: J_Martineau
Verified date: Feb 06, 2019
Observation date: Jul 15, 2018
Submitted by: Christian.Nunes
Region: Moffat County, Colorado, United States
Verified by: mikefisher
Verified date: Aug 13, 2018
Observation date: Aug 09, 2018
Submitted by: Team Kweeper
Region: Nevada County, California, United States
Verified by: Ken Davenport
Verified date: Aug 11, 2018
Observation date: Jul 21, 2018
Submitted by: Team Kweeper
Region: El Dorado County, California, United States
Verified by: Ken Davenport
Verified date: Aug 11, 2018
Observation date: Aug 02, 2018
Submitted by: shastamax
Region: Siskiyou County, California, United States
Verified by: Ken Davenport
Verified date: Aug 02, 2018
Observation date: Jul 01, 2009
Submitted by: Team Kweeper
Region: El Dorado County, California, United States
Verified by: Ken Davenport
Verified date: Jul 17, 2018
Observation date: Jun 29, 2016
Submitted by: jaymahoney
Region: Eagle County, Colorado, United States
Verified by: mikefisher
Verified date: Oct 28, 2017
Observation date: Sep 03, 2017
Submitted by: Robert Gorman
Region: Mono County, California, United States
Verified by: Ken Davenport
Verified date: Sep 22, 2017
Observation date: Sep 03, 2017
Submitted by: Robert Gorman
Region: Mono County, California, United States
Verified by: Ken Davenport
Verified date: Sep 22, 2017
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