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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Erynnis horatius - Erynnis_horatius.jpg

The map below displays all BAMONA data for this species and has three different data layers:
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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 20, 2016 mathgeek Jackson County, Illinois, United States August 31, 2016 Details
August 28, 2016 hunter58 Hernando County, Florida, United States August 29, 2016 Details
August 23, 2016 John LeBlanc Pasco County, Florida, United States August 29, 2016 Details
August 29, 2016 wildman Charleston County, South Carolina, United States August 29, 2016 Details
August 17, 2016 HerbLady Dent County, Missouri, United States August 24, 2016 Details
August 13, 2016 S. J. Stedman (Larry Little) Putnam County, Tennessee, United States August 22, 2016 Details
August 10, 2016 crprice Ripley County, Missouri, United States August 16, 2016 Details
August 14, 2016 ButterBelle Putnam County, Tennessee, United States August 14, 2016 Details
July 30, 2016 gunhilda Payne County, Oklahoma, United States August 06, 2016 Details
July 30, 2016 Doug Bruce Bedford County, Tennessee, United States July 31, 2016 Details
July 17, 2016 John LeBlanc Chesterfield County, Virginia, United States July 30, 2016 Details
July 19, 2016 John LeBlanc Chesterfield County, Virginia, United States July 30, 2016 Details
July 26, 2016 John LeBlanc Chesterfield County, Virginia, United States July 30, 2016 Details
July 23, 2016 webielenberg Blount County, Tennessee, United States July 23, 2016 Details
July 06, 2016 John LeBlanc Chesterfield County, Virginia, United States July 09, 2016 Details
July 02, 2016 Doug Bruce Gibson County, Tennessee, United States July 03, 2016 Details
July 01, 2016 ButterBelle Putnam County, Tennessee, United States July 02, 2016 Details
June 19, 2016 Melinda Fawver Meigs County, Tennessee, United States June 28, 2016 Details
June 26, 2016 Doug Bruce Pickett County, Tennessee, United States June 28, 2016 Details
June 11, 2016 CA Ivy Sebastian County, Arkansas, United States June 12, 2016 Details
June 02, 2016 CA Ivy Sebastian County, Arkansas, United States June 07, 2016 Details
May 29, 2016 billwx Garfield County, Oklahoma, United States June 06, 2016 Details
April 22, 2016 jjflossem Hernando County, Florida, United States June 05, 2016 Details
May 15, 2016 John LeBlanc Pasco County, Florida, United States May 31, 2016 Details
May 14, 2016 scfl47 Indian River County, Florida, United States May 18, 2016 Details
May 14, 2016 Gary The Villages Sumter County, Florida, United States May 18, 2016 Details
May 03, 2016 ncrosbyrd Leon County, Florida, United States May 18, 2016 Details
May 03, 2016 ncrosbyrd Leon County, Florida, United States May 18, 2016 Details
May 02, 2016 jjflossem Hernando County, Florida, United States May 03, 2016 Details
March 12, 2016 ncrosbyrd Leon County, Florida, United States March 26, 2016 Details
March 25, 2016 CA Ivy Sebastian County, Arkansas, United States March 25, 2016 Details
August 29, 2015 tom nolan Burlington County, New Jersey, United States February 29, 2016 Details
June 02, 2015 billwx Garfield County, Oklahoma, United States February 28, 2016 Details
September 25, 2015 tom nolan Cape May County, New Jersey, United States February 27, 2016 Details
July 04, 2015 dgardner Charleston County, South Carolina, United States February 14, 2016 Details
June 02, 2015 Jonathan Clark Catahoula Parish, Louisiana, United States February 09, 2016 Details
June 20, 2015 Ken Bosso East Baton Rouge Parish, Louisiana, United States February 09, 2016 Details
June 22, 2015 Ken Bosso East Baton Rouge Parish, Louisiana, United States February 09, 2016 Details
July 05, 2015 cosmic_cat Hopkins County, Texas, United States February 09, 2016 Details
July 04, 2015 Jonathan Clark La Salle Parish, Louisiana, United States February 09, 2016 Details
August 16, 2015 Jonathan Clark Grant Parish, Louisiana, United States February 09, 2016 Details
September 06, 2015 Jonathan Clark La Salle Parish, Louisiana, United States February 09, 2016 Details
September 09, 2015 Martin and Sara Goliad County, Texas, United States February 09, 2016 Details
September 18, 2015 gpstewart Texas, United States, Williamson County February 09, 2016 Details
November 08, 2015 ncrosbyrd Hidalgo County, Texas, United States February 09, 2016 Details
June 08, 2013 tjrickert Mercer County, Pennsylvania, United States February 03, 2016 Details
April 24, 2011 david.govoni Richmond City County, Virginia, United States January 11, 2016 Details
May 19, 2010 flacracker Adams County, Mississippi, United States January 11, 2016 Details
May 05, 2012 ncrosbyrd McIntosh County, Georgia, United States January 01, 2016 Details
June 03, 2014 ncrosbyrd McIntosh County, Georgia, United States December 23, 2015 Details