Attributes of Erynnis horatius
Horace's Duskywing
Erynnis horatius (Scudder & Burgess, 1870)
Family: Hesperiidae
Subfamily: Pyrginae
Identification: Fringes are brown. Upperside of male forewing is dark brown with little contrast and no white overscaling. Upperside of female forewing is light brown with a contrasting pattern and large transparent spots. Underside of hindwing is usually without 2 spots below the apex. Male has a costal fold containing yellow scent scales; female has a patch of scent scales on the 7th abdominal segment.
Wing Span: 1 7/16 - 1 15/16 inches (3.6 - 4.9 cm).
Life History: To seek females, males perch at the ends of twigs on hilltops or slopes about 1 foot above the ground. Mating has been observed around midday; females deposit eggs singly on new growth of the host. Caterpillars feed on young leaves and rest in leaf nests. Caterpillars of the last brood hibernate.
Flight: Two broods in the north from April-September, three broods in the Deep South and Texas from January-November.
Caterpillar Hosts: Both red and white oaks including willow oak (Quercus phellos), northern red oak (Q. velutina), scrub oak (Q. ilicifolia), water oak (Q. nigra), post oak (Q. stellata), and live oak (Q. virginiana).
Adult Food: Horace\'s Duskywing visits flower up to about 4.5 feet tall including dogbane, buttonbush, sneezeweed, goldenrod, peppermint, boneset, and winter cress.
Habitat: Open woodlands and edges, clearings, fencerows, wooded swamps, power-line right-of-ways, open fields, roadsides.
Range: Massachusetts west to eastern South Dakota; south through most of the eastern United States to Florida, the Gulf Coast, and South Texas; south in the west through southeastern Utah, Colorado, northeastern Arizona, and New Mexico.
Conservation: Not usually required.
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 Erynnis horatius
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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.
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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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April 25, 2013 | CA Ivy | Sebastian County, Arkansas, United States | May 06, 2013 | Details |
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April 17, 2013 | Doug Bruce | Benton County, Tennessee, United States | April 22, 2013 | Details |
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April 14, 2013 | HHowell | Wayne County, Tennessee, United States | April 22, 2013 | Details |
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July 08, 2012 | Chip Krilowicz | Atlantic County, New Jersey, United States | April 14, 2013 | Details |
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April 10, 2013 | Mike Dillon | Texas, Marion County, United States | April 11, 2013 | Details |
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September 08, 2012 | CA Ivy | Cherokee County, Oklahoma, United States | February 03, 2013 | Details |
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December 05, 2012 | CA Ivy | Sebastian County, Arkansas, United States | January 02, 2013 | Details |
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May 05, 2010 | JeanEvoy | De Soto County, Florida, United States | January 02, 2013 | Details |
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December 18, 2012 | Richard Crook | Palm Beach County, Florida, United States | January 02, 2013 | Details |
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September 21, 2012 | adamschaffer | Benton County, Arkansas, United States | December 29, 2012 | Details |
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September 28, 2012 | CA Ivy | Sebastian County, Arkansas, United States | December 27, 2012 | Details |
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July 05, 2012 | katawma | Norfolk County, Massachusetts, United States | December 04, 2012 | Details |
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May 27, 2012 | deweidemann | Franklin County, Massachusetts, United States | December 04, 2012 | Details |
| May 06, 2012 | vitaly charny (Vitaly Charny) | Colbert County, Alabama, United States | December 01, 2012 | Details | |
| May 12, 2012 | vitaly charny (Vitaly Charny) | DeKalb County, Alabama, United States | December 01, 2012 | Details | |
| May 19, 2012 | vitaly charny (Vitaly Charny) | Bibb County, Alabama, United States | December 01, 2012 | Details | |
| May 19, 2012 | vitaly charny (Vitaly Charny) | Bibb County, Alabama, United States | December 01, 2012 | Details | |
| May 20, 2012 | vitaly charny (Vitaly Charny) | Jefferson County, Alabama, United States | December 01, 2012 | Details | |
| May 28, 2012 | vitaly charny (Vitaly Charny) | Colbert County, Alabama, United States | December 01, 2012 | Details | |
| May 26, 2012 | vitaly charny (Vitaly Charny) | Colbert County, Alabama, United States | December 01, 2012 | Details | |
| May 27, 2012 | vitaly charny (Vitaly Charny) | Colbert County, Alabama, United States | December 01, 2012 | Details | |
| June 02, 2012 | vitaly charny (Vitaly Charny) | Bibb County, Alabama, United States | December 01, 2012 | Details | |
| June 02, 2012 | vitaly charny (Vitaly Charny) | Bibb County, Alabama, United States | December 01, 2012 | Details | |
| June 03, 2012 | vitaly charny (Vitaly Charny) | Cleburne County, Alabama, United States | December 01, 2012 | Details | |
| June 03, 2012 | vitaly charny (Vitaly Charny) | Cleburne County, Alabama, United States | December 01, 2012 | Details | |
| June 09, 2012 | vitaly charny (Vitaly Charny) | Bibb County, Alabama, United States | December 01, 2012 | Details | |
| June 15, 2012 | vitaly charny (Vitaly Charny) | Colbert County, Alabama, United States | December 01, 2012 | Details | |
| June 16, 2012 | vitaly charny (Vitaly Charny) | Jefferson County, Alabama, United States | December 01, 2012 | Details | |
| June 23, 2012 | vitaly charny (Vitaly Charny) | Bibb County, Alabama, United States | December 01, 2012 | Details | |
| June 23, 2012 | vitaly charny (Vitaly Charny) | Bibb County, Alabama, United States | December 01, 2012 | Details | |
| June 24, 2012 | vitaly charny (Vitaly Charny) | Cleburne County, Alabama, United States | December 01, 2012 | Details | |
| July 04, 2012 | vitaly charny (Vitaly Charny) | Cleburne County, Alabama, United States | December 01, 2012 | Details | |
| July 28, 2012 | vitaly charny (Vitaly Charny) | Jefferson County, Alabama, United States | December 01, 2012 | Details | |
| July 29, 2012 | vitaly charny (Vitaly Charny) | Jefferson County, Alabama, United States | December 01, 2012 | Details | |
| August 04, 2012 | vitaly charny (Vitaly Charny) | Bibb County, Alabama, United States | December 01, 2012 | Details | |
| August 04, 2012 | vitaly charny (Vitaly Charny) | Perry County, Alabama, United States | December 01, 2012 | Details | |
| August 05, 2012 | vitaly charny (Vitaly Charny) | Colbert County, Alabama, United States | December 01, 2012 | Details | |
| August 11, 2012 | vitaly charny (Vitaly Charny) | Baldwin County, Alabama, United States | December 01, 2012 | Details | |
| August 18, 2012 | vitaly charny (Vitaly Charny) | Baldwin County, Alabama, United States | December 01, 2012 | Details | |
| August 20, 2012 | vitaly charny (Vitaly Charny) | Baldwin County, Alabama, United States | December 01, 2012 | Details | |
| August 25, 2012 | vitaly charny (Vitaly Charny) | Cleburne County, Alabama, United States | December 01, 2012 | Details | |
| August 26, 2012 | vitaly charny (Vitaly Charny) | Bibb County, Alabama, United States | December 01, 2012 | Details | |
| September 01, 2012 | vitaly charny (Vitaly Charny) | Jefferson County, Alabama, United States | December 01, 2012 | Details | |
| September 07, 2012 | vitaly charny (Vitaly Charny) | Colbert County, Alabama, United States | December 01, 2012 | Details | |
| September 14, 2012 | vitaly charny (Vitaly Charny) | Tuscaloosa County, Alabama, United States | December 01, 2012 | Details | |
| September 29, 2012 | vitaly charny (Vitaly Charny) | Jefferson County, Alabama, United States | December 01, 2012 | Details | |
| October 04, 2012 | vitaly charny (Vitaly Charny) | Jefferson County, Alabama, United States | December 01, 2012 | Details | |
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July 14, 2012 | Roy Zartarian | Hartford County, Connecticut, United States | November 21, 2012 | Details |
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August 20, 2012 | Axarus | Middlesex County, Massachusetts, United States | November 17, 2012 | Details |
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July 27, 2011 | Jeff Trahan | Webster Parish, Louisiana, United States | November 13, 2012 | Details |
