Attributes of Erynnis tristis
Mournful Duskywing
Erynnis tristis (Boisduval, 1852)
Family: Hesperiidae
Subfamily: Pyrginae
Identification: Male has a costal fold containing yellow scent scales; female has a patch of scent scales on the 7th abdominal segment. Upperside of wings is dark brown-black with some transparent spots. Spots are larger in the female. Underside of hindwing is dark brown with a row of long white spots near the margin.
Wing Span: 1 1/4 - 1 15/16 inches (3.2 - 4.9 cm).
Life History: Males perch on hilltops all day to watch for females. Eggs are laid singly on new growth of the host plant. Caterpillars feed on young leaves and rest in shelters of rolled or tied leaves. Caterpillars of the last brood hibernate.
Flight: Three broods in Texas from March-April, June-July, and September-November.
Caterpillar Hosts: Various oaks including coast live oak (Quercus agrifolia), blue oak (Q. douglasii), and valley oak (Q. lobata).
Adult Food: Flower nectar.
Habitat: Oak woodlands.
Range: Northern California south through central Arizona, southern New Mexico, the mountains of Mexico, and Central America to Colombia. Strays to South Texas.
Conservation: Not usually required.
NCGR: G4 - Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Taxonomy Notes:
Images of Erynnis tristis
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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.
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The fifty most recently verified sightings are below. See more recently verified sightings of all species.
| Observation Date | Submitter | Region |
Verified Date |
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|---|---|---|---|---|---|
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August 06, 2012 | Amateur Entomologist | San Luis Obispo County, California, United States | December 09, 2012 | Details |
| July 31, 1986 | legacy.reporter (Ray Stanford) | Cochise County, Arizona, United States | December 01, 2012 | Details | |
| July 31, 1986 | legacy.reporter (Ray Stanford) | Cochise County, Arizona, United States | December 01, 2012 | Details | |
| June 24, 1988 | charlie covell (Charles Covell) | Cochise County, Arizona, United States | December 01, 2012 | Details | |
| July 12, 1997 | legacy.reporter (Kilian Roever) | Apache County, Arizona, United States | December 01, 2012 | Details | |
| July 22, 1997 | legacy.reporter (R. Stanford & A. Warren) | Apache County, Arizona, United States | December 01, 2012 | Details | |
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September 10, 2012 | JimConrad | Texas, United States, Uvalde County | September 12, 2012 | Details |
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September 02, 2012 | docdemory | Orange County, California, United States | September 06, 2012 | Details |
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August 26, 2012 | tmorgan | Orange County, California, United States | August 26, 2012 | Details |
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June 20, 2008 | mojoedevine | Alameda County, California, United States | August 23, 2012 | Details |
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July 07, 2012 | dspicer | Cochise County, Arizona, United States | July 29, 2012 | Details |
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July 02, 2012 | evilrobot42 | Santa Clara County, California, United States | July 15, 2012 | Details |
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April 18, 2012 | mudgrub12 | Placer County, California, United States | April 20, 2012 | Details |
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August 17, 2010 | Amateur Entomologist | San Luis Obispo County, California, United States | February 16, 2012 | Details |
| July 07, 1976 | legacy.reporter (Clifford D. Ferris) | Cochise County, Arizona, United States | January 01, 2012 | Details | |
| July 07, 1976 | legacy.reporter (Clifford D. Ferris) | Cochise County, Arizona, United States | January 01, 2012 | Details | |
| July 07, 1976 | legacy.reporter (Clifford D. Ferris) | Cochise County, Arizona, United States | January 01, 2012 | Details | |
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October 14, 2011 | jeanie.knitwit | Hidalgo County, Texas, United States | October 21, 2011 | Details |
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October 15, 2011 | GarPhotog | San Diego County, California, United States | October 17, 2011 | Details |
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October 06, 2011 | AKimages | San Diego County, California, United States | October 08, 2011 | Details |
| April 23, 2011 | Ken Davenport (Ken Davenport) | Fresno County, California, United States | May 01, 2011 | Details | |
| April 25, 1982 | Ken Davenport (Ken Davenport) | Pima County, Arizona, United States | January 01, 2011 | Details | |
| April 28, 1982 | Ken Davenport (Ken Davenport) | Pima County, Arizona, United States | January 01, 2011 | Details | |
| July 28, 2005 | Ken Davenport (Ken Davenport) | Cochise County, Arizona, United States | January 01, 2011 | Details | |
| July 03, 2007 | Ken Davenport (Ken Davenport) | Cochise County, Arizona, United States | January 01, 2011 | Details | |
| July 02, 2007 | Ken Davenport (Ken Davenport) | Cochise County, Arizona, United States | January 01, 2011 | Details | |
| July 01, 2007 | Ken Davenport (Ken Davenport) | Cochise County, Arizona, United States | January 01, 2011 | Details | |
| July 02, 2007 | Ken Davenport (Ken Davenport) | Cochise County, Arizona, United States | January 01, 2011 | Details | |
| August 07, 1994 | Ken Davenport (Ken Davenport) | Pima County, Arizona, United States | January 01, 2011 | Details | |
| February 21, 2012 | legacy.reporter (Frank Model) | Orange County, California, United States | January 01, 2011 | Details | |
| April 11, 2010 | Ken Davenport (Ken Davenport) | Kern County, California, United States | December 31, 2010 | Details | |
| April 03, 2010 | legacy.reporter (Mark Walker) | Riverside County, California, United States | December 31, 2010 | Details | |
| April 03, 2010 | legacy.reporter (Mark Walker) | Riverside County, California, United States | December 31, 2010 | Details | |
| April 11, 2010 | Ken Davenport (Ken Davenport) | Kern County, California, United States | December 31, 2010 | Details | |
| April 03, 2010 | legacy.reporter (Mark Walker) | Riverside County, California, United States | December 31, 2010 | Details | |
| April 11, 2010 | Ken Davenport (Ken Davenport) | Kern County, California, United States | December 31, 2010 | Details | |
| July 06, 2007 | legacy.reporter (Koji Shiraiwa) | San Diego County, California, United States | December 31, 2010 | Details | |
| May 02, 2004 | legacy.reporter (William Bouton) | San Luis Obispo County, California, United States | December 31, 2010 | Details | |
| September 27, 2003 | legacy.reporter (William Bouton) | San Luis Obispo County, California, United States | December 31, 2010 | Details | |
| August 25, 2005 | legacy.reporter (Kim Davis & Mike Stangeland) | San Luis Obispo County, California, United States | December 31, 2010 | Details | |
| June 18, 1989 | legacy.reporter (A. M. Shapiro) | Nevada County, California, United States | August 02, 2010 | Details | |
| October 04, 1986 | legacy.reporter (Robert L. Langston) | Monterey County, California, United States | April 02, 2010 | Details | |
| March 22, 1967 | legacy.reporter (Larry Orsak) | Orange County, California, United States | January 06, 2010 | Details | |
| March 19, 1970 | legacy.reporter (Gary Felton) | Orange County, California, United States | January 06, 2010 | Details | |
| April 23, 1972 | legacy.reporter (Charles Sexton) | Orange County, California, United States | January 06, 2010 | Details | |
| July 23, 1929 | legacy.reporter (C. Dammers) | Orange County, California, United States | January 06, 2010 | Details | |
| April 26, 1974 | legacy.reporter (Larry Orsak) | Orange County, California, United States | January 06, 2010 | Details | |
| February 20, 1930 | legacy.reporter (Theodore Hower) | Orange County, California, United States | January 06, 2010 | Details | |
| July 09, 1935 | legacy.reporter (unknown) | Orange County, California, United States | January 06, 2010 | Details | |
| July 07, 1935 | legacy.reporter (Charles Rudkin) | Orange County, California, United States | January 06, 2010 | Details |
