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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Speyeria hesperis - nausicaa.jpg

Speyeria hesperis - nausicaa.jpg

The map below displays all BAMONA data for this species and has three different data layers:
1. All records (yellow dots)   2. Recently verified records (orange dots)*   3. US county records (purple)

There are also three base layers: 1. Satellite    2. Normal   3. Hybrid

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*The orange dots on the map provide access to information about the 400 most recently verified sightings of this species. Sometimes, there are several records at the same location. Use the table view to access these records.

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.

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Observation Date Submitter Region Verified Datesort icon
August 02, 2014 Sue Orlowski Spokane County, Washington, United States August 12, 2014 Details
July 07, 2014 bwilliams Ravalli County, Montana, United States July 29, 2014 Details
June 24, 2014 Randy Floyd Bernalillo County, New Mexico, United States July 06, 2014 Details
August 13, 2013 rjboehnke Teller County, Colorado, United States June 22, 2014 Details
September 21, 2013 Frederike Hofstra Grand County, Colorado, United States June 22, 2014 Details
July 20, 2007 corey.husic Teton County, Wyoming, United States March 04, 2014 Details
August 10, 2013 cliffweisse Fremont County, Idaho, United States December 28, 2013 Details
July 20, 2012 jfmorgan Coconino County, Arizona, United States November 04, 2013 Details
August 03, 2013 philohela Iron County, Utah, United States October 26, 2013 Details
August 21, 2013 sagebird52 Albany County, Wyoming, United States August 27, 2013 Details
July 03, 2013 John Ashley Flathead County, Montana, United States August 23, 2013 Details
July 20, 2013 plex1ppus Missoula County, Montana, United States August 12, 2013 Details
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
June 20, 2012 the gdoug Saskatchewan, Canada October 13, 2012 Details
July 28, 2012 plex1ppus Missoula County, Montana, United States October 12, 2012 Details
August 11, 2012 Tommie Rogers Ouray County, Colorado, United States October 05, 2012 Details
July 22, 2012 Jdammarell Ravalli County, Montana, United States July 25, 2012 Details
July 08, 2012 Niayre Bernalillo County, New Mexico, United States July 22, 2012 Details
July 08, 2012 Niayre Bernalillo County, New Mexico, United States July 21, 2012 Details
July 15, 2012 davidelwonger@msn.com Teller County, Colorado, United States July 21, 2012 Details
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
August 19, 2011 Joe Schelling--entered by M ODonnell Bernalillo County, New Mexico, United States October 03, 2011 Details
June 10, 2011 Matt ODonnell Bernalillo County, New Mexico, United States September 11, 2011 Details
July 30, 2011 kbjornk Clear Creek County, Colorado, United States August 10, 2011 Details
July 05, 2011 cpcdolan Archuleta County, Colorado, United States July 31, 2011 Details
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
August 07, 2010 plex1ppus Missoula County, Montana, United States April 08, 2011 Details
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