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.
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Verified Sightings
Displaying 385 - 408 of 2941 verified sightings
Observation date: Apr 26, 2021
Submitted by: KShell
Region: Dixie County, Florida, United States
Verified by: John Calhoun
Verified date: Apr 28, 2021
Observation date: Jul 21, 2013
Submitted by: DVL
Region: Collier County, Florida, United States
Verified by: John Calhoun
Verified date: Apr 28, 2021
Observation date: Apr 05, 2021
Submitted by: Larry S Price
Region: Montgomery County, Arkansas, United States
Verified by: CA Ivy
Verified date: Apr 11, 2021
Observation date: Feb 27, 2020
Submitted by: KShell
Region: Dixie County, Florida, United States
Verified by: John Calhoun
Verified date: Apr 07, 2021
Observation date: Jun 25, 2019
Submitted by: KShell
Region: Dixie County, Florida, United States
Verified by: John Calhoun
Verified date: Apr 06, 2021
Observation date: Mar 30, 2021
Submitted by: Michael Weisensee
Region: Charlotte County, Florida, United States
Verified by: John Calhoun
Verified date: Mar 31, 2021
Observation date: Mar 08, 2021
Submitted by: sgensits
Region: Leon County, Florida, United States
Verified by: John Calhoun
Verified date: Mar 12, 2021
Observation date: Jul 26, 2019
Submitted by: stkeating
Region: Providence County, Rhode Island, United States
Verified by: Harry Pavulaan
Verified date: Mar 06, 2021
Observation date: Aug 08, 2014
Submitted by: Wade Wander
Region: Sussex County, New Jersey, United States
Verified by: Jack Connor
Verified date: Feb 17, 2021
Observation date: Jul 18, 2020
Submitted by: Mlcombs
Region: Gwinnett County, Georgia, United States
Verified by: Mikelchap
Verified date: Feb 16, 2021
Observation date: Jul 05, 2010
Submitted by: Mark Hutchinson
Region: Hernando County, Florida, United States
Verified by: John Calhoun
Verified date: Jan 20, 2021
Observation date: Jul 05, 2010
Submitted by: Mark Hutchinson
Region: Hernando County, Florida, United States
Verified by: John Calhoun
Verified date: Jan 20, 2021
Observation date: Jun 25, 2012
Submitted by: Mark Hutchinson
Region: Hernando County, Florida, United States
Verified by: John Calhoun
Verified date: Jan 20, 2021
Observation date: May 03, 2015
Submitted by: Mark Hutchinson
Region: Hernando County, Florida, United States
Verified by: John Calhoun
Verified date: Jan 20, 2021
Observation date: Jun 05, 2010
Submitted by: Mark Hutchinson
Region: Hernando County, Florida, United States
Verified by: John Calhoun
Verified date: Jan 20, 2021
Observation date: Jun 13, 2017
Submitted by: John LeBlanc
Region: Chesterfield County, Virginia, United States
Verified by: drerbium
Verified date: Jan 10, 2021
Observation date: May 20, 2018
Submitted by: K Stilwell
Region: Tazewell County, Virginia, United States
Verified by: drerbium
Verified date: Jan 08, 2021
Observation date: Sep 15, 2017
Submitted by: John LeBlanc
Region: Chesterfield County, Virginia, United States
Verified by: drerbium
Verified date: Jan 08, 2021
Observation date: Apr 26, 2018
Submitted by: Darrin Frye
Region: Chesapeake, Virginia, United States
Verified by: drerbium
Verified date: Jan 07, 2021
Observation date: Jul 22, 2018
Submitted by: Kdm323
Region: Henrico County, Virginia, United States
Verified by: drerbium
Verified date: Jan 07, 2021
Observation date: Jul 25, 2015
Submitted by: seves1013
Region: Alexandria, Virginia, United States
Verified by: drerbium
Verified date: Jan 05, 2021
Observation date: May 02, 2019
Submitted by: John LeBlanc
Region: Chesterfield County, Virginia, United States
Verified by: drerbium
Verified date: Jan 05, 2021
Observation date: Jul 16, 2019
Submitted by: John LeBlanc
Region: Chesterfield County, Virginia, United States
Verified by: drerbium
Verified date: Jan 05, 2021
Observation date: Jun 29, 2019
Submitted by: noracatbird
Region: Virginia, United States
Verified by: drerbium
Verified date: Jan 03, 2021
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