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 428 verified sightings
Observation date: Jul 01, 2012
Submitted by: RobSimpson
Region: Park County, Wyoming, United States
Verified by: J_Martineau
Verified date: Apr 15, 2025
Observation date: Jul 18, 2024
Submitted by: Robert Gorman
Region: White Pine County, Nevada, United States
Verified by: Paul Prappas
Verified date: Aug 10, 2024
Observation date: Jun 22, 2024
Submitted by: cklindsey
Region: Columbia County, Washington, United States
Verified by: davidwdroppers
Verified date: Jul 16, 2024
Observation date: Jul 10, 2024
Submitted by: Paul Prappas
Region: Sierra County, California, United States
Verified by: Paul Prappas
Verified date: Jul 12, 2024
Observation date: Jul 08, 2024
Submitted by: hasfitz5
Region: Washoe County, Nevada, United States
Verified by: Ken Davenport
Verified date: Jul 12, 2024
Observation date: Jul 01, 2024
Submitted by: hasfitz5
Region: Washoe County, Nevada, United States
Verified by: Ken Davenport
Verified date: Jul 10, 2024
Observation date: Jun 28, 2024
Submitted by: glennfine
Region: Siskiyou County, California, United States
Verified by: Ken Davenport
Verified date: Jun 29, 2024
Observation date: Oct 08, 2023
Submitted by: rajanrao
Region: Alpine County, California, United States
Verified by: Ken Davenport
Verified date: Oct 11, 2023
Observation date: Oct 08, 2023
Submitted by: rajanrao
Region: Alpine County, California, United States
Verified by: Ken Davenport
Verified date: Oct 10, 2023
Observation date: Jul 23, 2017
Submitted by: dingoqueen
Region: Weber County, Utah, United States
Verified by: James Steen
Verified date: Sep 18, 2023
Observation date: Jul 23, 2017
Submitted by: mhearell
Region: Weber County, Utah, United States
Verified by: James Steen
Verified date: Sep 18, 2023
Observation date: Jul 04, 2018
Submitted by: Robb Hannawacker
Region: Utah County, Utah, United States
Verified by: James Steen
Verified date: Sep 12, 2023
Observation date: Aug 13, 2023
Submitted by: TomPeterson
Region: Alpine County, California, United States
Verified by: Ken Davenport
Verified date: Sep 02, 2023
Observation date: Jul 29, 2023
Submitted by: NikkiM
Region: Carbon County, Montana, United States
Verified by: J_Martineau
Verified date: Aug 11, 2023
Observation date: Jul 24, 2023
Submitted by: cklindsey
Region: Wallowa County, Oregon, United States
Verified by: Ken Davenport
Verified date: Aug 09, 2023
Observation date: Jul 07, 2023
Submitted by: Thom Garrett
Region: Missoula County, Montana, United States
Verified by: J_Martineau
Verified date: Aug 07, 2023
Observation date: Jul 25, 2023
Submitted by: madamirie
Region: Shasta County, California, United States
Verified by: Ken Davenport
Verified date: Aug 03, 2023
Observation date: Sep 03, 2022
Submitted by: NikkiM
Region: Carbon County, Montana, United States
Verified by: J_Martineau
Verified date: Feb 27, 2023
Observation date: Jul 09, 2022
Submitted by: NikkiM
Region: Carbon County, Montana, United States
Verified by: J_Martineau
Verified date: Feb 14, 2023
Observation date: Oct 10, 2022
Submitted by: NikkiM
Region: Wyoming, United States
Verified by: J_Martineau
Verified date: Jan 23, 2023
Observation date: Aug 16, 2022
Submitted by: glennfine
Region: Siskiyou County, California, United States
Verified by: Ken Davenport
Verified date: Aug 18, 2022
Observation date: Jun 30, 2021
Submitted by: gasigr
Region: Wallowa County, Oregon, United States
Verified by: Ken Davenport
Verified date: Mar 03, 2022
Observation date: Jul 22, 2020
Submitted by: gasigr
Region: Wallowa County, Oregon, United States
Verified by: Ken Davenport
Verified date: Mar 03, 2022
Observation date: Jul 20, 2017
Submitted by: 4oclockwatch
Region: Jackson County, Oregon, United States
Verified by: davidwdroppers
Verified date: Nov 14, 2021
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