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
Verified Sightings
Displaying 1 - 24 of 409 verified sightings
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
Observation date: Jul 06, 2019
Submitted by: ncrosbyrd
Region: Josephine County, Oregon, United States
Verified by: davidwdroppers
Verified date: Nov 14, 2021
Observation date: Jul 30, 2017
Submitted by: Mark Salvato
Region: Alpine County, California, United States
Verified by: Ken Davenport
Verified date: Nov 13, 2021
Observation date: Jul 12, 2021
Submitted by: mongoose
Region: Glacier County, Montana, United States
Verified by: J_Martineau
Verified date: Sep 18, 2021
Observation date: Jul 09, 2021
Submitted by: mongoose
Region: Montana, United States
Verified by: J_Martineau
Verified date: Sep 18, 2021
Observation date: Jul 24, 2021
Submitted by: mongoose
Region: Glacier County, Montana, United States
Verified by: J_Martineau
Verified date: Sep 18, 2021
Observation date: Jul 24, 2021
Submitted by: mongoose
Region: Glacier County, Montana, United States
Verified by: J_Martineau
Verified date: Sep 18, 2021
Observation date: Jul 24, 2021
Submitted by: mongoose
Region: Glacier County, Montana, United States
Verified by: J_Martineau
Verified date: Sep 18, 2021
Observation date: Jul 24, 2021
Submitted by: mongoose
Region: Glacier County, Montana, United States
Verified by: J_Martineau
Verified date: Sep 18, 2021
Observation date: Aug 14, 2021
Submitted by: sfbaywildlife
Region: Mariposa County, California, United States
Verified by: Ken Davenport
Verified date: Aug 25, 2021
Observation date: Aug 14, 2021
Submitted by: sfbaywildlife
Region: Mariposa County, California, United States
Verified by: Ken Davenport
Verified date: Aug 25, 2021
Observation date: Aug 14, 2021
Submitted by: sfbaywildlife
Region: Mariposa County, California, United States
Verified by: Ken Davenport
Verified date: Aug 25, 2021
Observation date: Jul 15, 2021
Submitted by: tsimpson
Region: Klamath County, Oregon, United States
Verified by: Ken Davenport
Verified date: Aug 22, 2021
Observation date: Jul 24, 2021
Submitted by: A Terrible Huma...
Region: Tuolumne County, California, United States
Verified by: Ken Davenport
Verified date: Aug 11, 2021
Observation date: Aug 03, 2021
Submitted by: glennfine
Region: Trinity County, California, United States
Verified by: Ken Davenport
Verified date: Aug 07, 2021
Observation date: Aug 01, 2021
Submitted by: glennfine
Region: California, United States
Verified by: Ken Davenport
Verified date: Aug 07, 2021
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: cklindsey
Region: Washoe County, Nevada, United States
Verified by: Ken Davenport
Verified date: Aug 18, 2020
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