Attributes of Speyeria hesperis
Northwestern Fritillary
Speyeria hesperis (W.H. Edwards, 1864)
Family: Nymphalidae
Subfamily: Heliconiinae
Identification: Quite variable. Upperside orange-brown, often darker at base, with black outer margins especially on forewing; male has black scales on veins. Underside of hindwing with basal disk or light brown orange-brown with pale submarginal band; spots silvered or unsilvered.
Wing Span: 2 - 2 3/4 inches (5 - 7 cm).
Life History: Males patrol during the day in open areas. Eggs are laid singly on leaf litter near host plant. Unfed first-stage caterpillars overwinter, emerging in spring to feed on leaves.
Flight: One flight from June-October, mainly July-August.
Caterpillar Hosts: Violets.
Adult Food: Flower nectar including Gaillardia, rabbitbrush, purple mints, and shrub cinquefoil.
Habitat: Forest openings, meadows, and open hillsides.
Range: Western mountains from central western Alaska, Yukon, and Northwest Territories south to central California, Arizona, and New Mexico.
Conservation: Not usually of conservation concern. Subspecies elko Austin and hanseni Emmel and Emmel are of conservation concern because of their small ranges. The former may be threatened by invasive alien weeds including smooth brome and/or cheatgrass.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Taxonomy Notes:
Images of Speyeria hesperis
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The map below displays all verified sighting records in the BAMONA database for this species. Each record is indicated with a yellow dot. The orange dots on the map provide access to information about the 400 most recently verified sightings of this species. In some instances, there are several records at the same location. Use the table view to access these records.
Instructions: Click on the map and move your mouse to pan.
Zoom by using the plus [+] and minus [-] on the left side of the map.
To change which map layers are displayed, click on the plus sign [+] on the right side of the map.
By default, the fifty most recently verified sightings are below. Sort by Observation Date to see the most recent sightings, or filter the sightings by region to get a regional list.
| Observation Date | Submitter | Region |
Verified Date |
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|---|---|---|---|---|---|
| July 10, 1982 | legacy.reporter (K Hansen-S. Mattoon) | Elko County, Nevada, United States | December 01, 2012 | Details | |
| July 11, 1982 | legacy.reporter (K Hansen-S. Mattoon) | Elko County, Nevada, United States | December 01, 2012 | Details | |
| August 01, 1988 | legacy.reporter (George T. Austin) | Douglas County, Nevada, United States | December 01, 2012 | Details | |
| July 14, 1989 | legacy.reporter (George T. Austin) | Elko County, Nevada, United States | December 01, 2012 | Details | |
| August 06, 1985 | legacy.reporter (Clifford D. Ferris) | Apache County, Arizona, United States | December 01, 2012 | Details | |
| July 30, 1987 | legacy.reporter (William S. Swisher) | Coconino County, Arizona, United States | December 01, 2012 | Details | |
| July 23, 1987 | legacy.reporter (Clifford D. Ferris) | Graham County, Arizona, United States | December 01, 2012 | Details | |
| August 10, 1994 | legacy.reporter (Clifford D. Ferris) | Apache County, Arizona, United States | December 01, 2012 | Details | |
| July 07, 1997 | legacy.reporter (C. Bordelon & E. Knudson) | Graham County, Arizona, United States | December 01, 2012 | Details | |
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June 20, 2012 | the gdoug | Saskatchewan, Canada | October 13, 2012 | Details |
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July 28, 2012 | plex1ppus | Missoula County, Montana, United States | October 12, 2012 | Details |
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August 11, 2012 | Tommie Rogers | Ouray County, Colorado, United States | October 05, 2012 | Details |
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July 22, 2012 | Jdammarell | Ravalli County, Montana, United States | July 25, 2012 | Details |
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July 08, 2012 | Niayre | Bernalillo County, New Mexico, United States | July 22, 2012 | Details |
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July 08, 2012 | Niayre | Bernalillo County, New Mexico, United States | July 21, 2012 | Details |
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July 15, 2012 | davidelwonger | Teller County, Colorado, United States | July 21, 2012 | Details |
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July 07, 2012 | allelopath | Taos County, New Mexico, United States | July 13, 2012 | Details |
| July 08, 1978 | legacy.reporter (George T. Austin) | Elko County, Nevada, United States | January 01, 2012 | Details | |
| August 10, 1994 | legacy.reporter (Clifford D. Ferris) | Apache County, Arizona, United States | January 01, 2012 | Details | |
| August 07, 1975 | legacy.reporter (Floyd Preston) | Graham County, Arizona, United States | January 01, 2012 | Details | |
| August 04, 1976 | legacy.reporter (J & S Werner) | Coconino County, Arizona, United States | January 01, 2012 | Details | |
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August 19, 2011 | Joe Schelling--entered by M ODonnell | Bernalillo County, New Mexico, United States | October 03, 2011 | Details |
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June 10, 2011 | Matt ODonnell | Bernalillo County, New Mexico, United States | September 11, 2011 | Details |
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July 30, 2011 | kbjornk | Clear Creek County, Colorado, United States | August 10, 2011 | Details |
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July 05, 2011 | cpcdolan | Archuleta County, Colorado, United States | July 31, 2011 | Details |
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July 25, 2011 | cpcdolan | Rio Grande County, Colorado, United States | July 31, 2011 | Details |
| July 05, 1985 | legacy.reporter (Jim Brock) | Amador County, California, United States | May 01, 2011 | Details | |
| August 05, 1979 | legacy.reporter (Jim Brock) | Nevada County, California, United States | May 01, 2011 | Details | |
| June 22, 2000 | legacy.reporter (unknown) | Modoc County, California, United States | May 01, 2011 | Details | |
| July 16, 1968 | legacy.reporter (unknown) | Modoc County, California, United States | May 01, 2011 | Details | |
| July 15, 2007 | legacy.reporter (William Bouton) | Sierra County, California, United States | May 01, 2011 | Details | |
| August 07, 2011 | legacy.reporter (Ray Bruun) | Shasta County, California, United States | May 01, 2011 | Details | |
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August 07, 2010 | plex1ppus | Missoula County, Montana, United States | April 08, 2011 | Details |
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August 22, 2010 | Dwaine Wagoner | Natrona County, Wyoming, United States | January 25, 2011 | Details |
| August 03, 1994 | Ken Davenport (Ken Davenport) | Apache County, Arizona, United States | January 01, 2011 | Details | |
| August 05, 1994 | Ken Davenport (Ken Davenport) | Apache County, Arizona, United States | January 01, 2011 | Details | |
| July 04, 1984 | Ken Davenport (Ken Davenport) | Coconino County, Arizona, United States | January 01, 2011 | Details | |
| July 05, 1984 | Ken Davenport (Ken Davenport) | Coconino County, Arizona, United States | January 01, 2011 | Details | |
| June 07, 1989 | Ken Davenport (Ken Davenport) | Coconino County, Arizona, United States | January 01, 2011 | Details | |
| June 06, 1989 | Ken Davenport (Ken Davenport) | Coconino County, Arizona, United States | January 01, 2011 | Details | |
| July 10, 1953 | legacy.reporter (unknown) | Coconino County, Arizona, United States | January 01, 2011 | Details | |
| July 03, 1949 | legacy.reporter (Floyd & June Preston) | Coconino County, Arizona, United States | January 01, 2011 | Details | |
| June 28, 1969 | legacy.reporter (Ronald S. Wielgus) | Gila County, Arizona, United States | January 01, 2011 | Details | |
| July 05, 1969 | legacy.reporter (Glen Gorelick) | Coconino County, Arizona, United States | January 01, 2011 | Details | |
| August 08, 1969 | legacy.reporter (Ronald S. Wielgus) | Coconino County, Arizona, United States | January 01, 2011 | Details | |
| July 10, 1953 | legacy.reporter (unknown) | Elko County, Nevada, United States | January 01, 2011 | Details | |
| July 29, 1945 | legacy.reporter (unknown) | Elko County, Nevada, United States | January 01, 2011 | Details | |
| August 08, 1967 | legacy.reporter (Emmel, Shields & Ellis) | Elko County, Nevada, United States | January 01, 2011 | Details | |
| July 11, 1963 | legacy.reporter (Peter Herlan) | Elko County, Nevada, United States | January 01, 2011 | Details | |
| July 14, 1972 | legacy.reporter (Clifford D. Ferris) | Elko County, Nevada, United States | January 01, 2011 | Details |
