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 200 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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May 06, 2012 | Americus Garden Inn | Georgia, Sumter County, United States | May 15, 2012 | Details |
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May 12, 2012 | kiki | Hillsborough County, Florida, United States | May 14, 2012 | Details |
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July 25, 2011 | Shane Patterson | Monroe County, Iowa, United States | April 28, 2012 | Details |
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April 13, 2012 | HHowell | Hancock County, Tennessee, United States | April 27, 2012 | Details |
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March 29, 2012 | HHowell | Sequatchie County, Tennessee, United States | April 12, 2012 | Details |
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April 07, 2012 | Cheryl Jennings | Hampshire County, West Virginia, United States | April 11, 2012 | Details |
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March 30, 2012 | Chip Krilowicz | Gloucester County, New Jersey, United States | March 31, 2012 | Details |
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March 13, 2012 | George Sims | Douglas County, Missouri, United States | March 17, 2012 | Details |
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May 30, 2011 | tjrickert | Jefferson County, Pennsylvania, United States | January 14, 2012 | Details |
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May 22, 2011 | jftrahan | Hempstead County, Arkansas, United States | January 04, 2012 | Details |
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July 31, 2011 | Cathy110 | James City County, Virginia, United States | December 27, 2011 | Details |
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November 30, 2011 | bentert | Collier County, Florida, United States | December 14, 2011 | Details |
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October 31, 2011 | mulhopd | Charlotte County, Florida, United States | November 20, 2011 | Details |
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October 06, 2011 | jomarlin | Marion County, Florida, United States | October 27, 2011 | Details |
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July 25, 2011 | elinpierce | Shelby County, Tennessee, United States | October 21, 2011 | Details |
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July 20, 2006 | rseidler | Jefferson Davis Parish, Louisiana, United States | September 20, 2011 | Details |
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July 20, 2006 | rseidler | Pointe Coupee Parish, Louisiana, United States | September 20, 2011 | Details |
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September 08, 2011 | jarap | Bibb County, Georgia, United States | September 12, 2011 | Details |
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July 07, 2011 | Naseem Reza | Richmond City County, Virginia, United States | August 25, 2011 | Details |
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August 19, 2011 | KarenL | Williamson County, Tennessee, United States | August 22, 2011 | Details |
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July 25, 2011 | anna_holmes | Madison County, Alabama, United States | August 21, 2011 | Details |
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July 06, 2010 | Eric McCloud | Vanderburgh County, Indiana, United States | August 14, 2011 | Details |
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July 26, 2011 | kiki | Hillsborough County, Florida, United States | August 14, 2011 | Details |
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May 05, 2009 | Olga_H | Okeechobee County, Florida, United States | August 11, 2011 | Details |
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June 29, 2009 | Olga_H | Okeechobee County, Florida, United States | August 11, 2011 | Details |
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July 11, 2011 | raven10322 | Howard County, Maryland, United States | August 11, 2011 | Details |
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July 06, 2008 | Myrtle Glen | Orange County, Florida, United States | August 11, 2011 | Details |
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August 02, 2011 | AEH | Fairfax County, Virginia, United States | August 08, 2011 | Details |
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July 02, 2011 | Lois Stacey | Barnwell County, South Carolina, United States | July 03, 2011 | Details |
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June 24, 2011 | AJ Trently | Lauderdale County, Tennessee, United States | June 30, 2011 | Details |
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June 06, 2011 | Naseem Reza | Richmond City County, Virginia, United States | June 17, 2011 | Details |
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June 05, 2011 | HHowell | Rhea County, Tennessee, United States | June 16, 2011 | Details |
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May 09, 2011 | Andy Eller | Rowan County, Kentucky, United States | June 13, 2011 | Details |
| May 21, 2011 | vitaly charny (Vitaly Charny) | Shelby County, Alabama, United States | May 31, 2011 | Details | |
| May 22, 2011 | vitaly charny (Vitaly Charny) | Baldwin County, Alabama, United States | May 31, 2011 | Details | |
| May 28, 2011 | vitaly charny (Vitaly Charny) | Colbert County, Alabama, United States | May 31, 2011 | Details | |
| May 29, 2011 | vitaly charny (Vitaly Charny) | Perry County, Alabama, United States | May 31, 2011 | Details | |
| May 29, 2011 | vitaly charny (Vitaly Charny) | Bibb County, Alabama, United States | May 31, 2011 | Details | |
| May 29, 2011 | vitaly charny (Vitaly Charny) | Shelby County, Alabama, United States | May 31, 2011 | Details | |
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May 07, 2011 | mellielong | Hillsborough County, Florida, United States | May 30, 2011 | Details |
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May 01, 2011 | mellielong | Hillsborough County, Florida, United States | May 19, 2011 | Details |
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March 09, 2011 | mellielong | Hillsborough County, Florida, United States | May 17, 2011 | Details |
| August 03, 1995 | legacy.reporter (Swales, John) | Washtenaw County, Michigan, United States | May 01, 2011 | Details | |
| August 23, 1995 | legacy.reporter (McWhirter, Doug) | Ingham County, Michigan, United States | May 01, 2011 | Details | |
| August 29, 1995 | legacy.reporter (Keilb, Mike) | Washtenaw County, Michigan, United States | May 01, 2011 | Details | |
| September 01, 1995 | legacy.reporter (Keilb, Mike) | Washtenaw County, Michigan, United States | May 01, 2011 | Details | |
| September 08, 1995 | legacy.reporter (Swales, John) | Washtenaw County, Michigan, United States | May 01, 2011 | Details | |
| September 01, 1996 | legacy.reporter (Swales, John) | Washtenaw County, Michigan, United States | May 01, 2011 | Details | |
| July 26, 1997 | legacy.reporter (Perkins, Owen A.) | Monroe County, Michigan, United States | May 01, 2011 | Details | |
| September 06, 1998 | legacy.reporter (Fleming, Richard) | Kalamazoo County, Michigan, United States | May 01, 2011 | Details |
