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 193 - 216 of 2933 verified sightings
Observation date: Aug 05, 2021
Submitted by: lilkriskattn
Region: Texas, Montague County, United States
Verified by: jwileyrains
Verified date: Oct 09, 2022
Observation date: Jun 19, 2021
Submitted by: ObserverofGod'sart
Region: Bexar County, Texas, United States
Verified by: jwileyrains
Verified date: Oct 08, 2022
Observation date: Aug 20, 2022
Submitted by: Chip Gilbert
Region: Greenville County, South Carolina, United States
Verified by: Dennis Forsythe
Verified date: Oct 05, 2022
Observation date: Jul 03, 2022
Submitted by: Chrysanthemum
Region: Albemarle County, Virginia, United States
Verified by: drerbium
Verified date: Sep 28, 2022
Observation date: Sep 24, 2022
Submitted by: billd
Region: Kay County, Oklahoma, United States
Verified by: CA Ivy
Verified date: Sep 27, 2022
Observation date: Jul 06, 2022
Submitted by: Aner
Region: Otero County, New Mexico, United States
Verified by: stevecary
Verified date: Sep 25, 2022
Observation date: Aug 14, 2022
Submitted by: mathgeek
Region: Jackson County, Illinois, United States
Verified by: rogerdowner
Verified date: Sep 23, 2022
Observation date: Sep 19, 2022
Submitted by: Lyceum-gardens
Region: Orange County, Florida, United States
Verified by: John Calhoun
Verified date: Sep 20, 2022
Observation date: Sep 10, 2022
Submitted by: billd
Region: Garfield County, Oklahoma, United States
Verified by: CA Ivy
Verified date: Sep 18, 2022
Observation date: Sep 14, 2022
Submitted by: Ryan84
Region: Charleston County, South Carolina, United States
Verified by: Dennis Forsythe
Verified date: Sep 15, 2022
Observation date: Sep 06, 2022
Submitted by: rarluck@gmail.com
Region: Palm Beach County, Florida, United States
Verified by: John Calhoun
Verified date: Sep 11, 2022
Observation date: Jul 02, 2021
Submitted by: CincyJeff
Region: Adams County, Ohio, United States
Verified by: rogerdowner
Verified date: Sep 07, 2022
Observation date: Aug 20, 2022
Submitted by: billd
Region: Garfield County, Oklahoma, United States
Verified by: CA Ivy
Verified date: Sep 06, 2022
Observation date: Sep 17, 2021
Submitted by: Robert Schoenberg
Region: Harris County, Texas, United States
Verified by: jwileyrains
Verified date: Sep 01, 2022
Observation date: Aug 27, 2022
Submitted by: datilson
Region: Clarke County, Georgia, United States
Verified by: Mikelchap
Verified date: Aug 29, 2022
Observation date: Oct 02, 2021
Submitted by: msiboldi
Region: Harris County, Texas, United States
Verified by: jwileyrains
Verified date: Aug 24, 2022
Observation date: Oct 06, 2021
Submitted by: twofried
Region: Texas, Victoria County, United States
Verified by: jwileyrains
Verified date: Aug 24, 2022
Observation date: Oct 05, 2021
Submitted by: twofried
Region: Brazoria County, Texas, United States
Verified by: jwileyrains
Verified date: Aug 24, 2022
Observation date: Jun 22, 2022
Submitted by: tom howe
Region: Blount County, Tennessee, United States
Verified by: James Steen
Verified date: Aug 22, 2022
Observation date: Jul 03, 2022
Submitted by: Texag
Region: Galveston County, Texas, United States
Verified by: jwileyrains
Verified date: Aug 22, 2022
Observation date: May 14, 2022
Submitted by: CaraLundquist
Region: Denton County, Texas, United States
Verified by: jwileyrains
Verified date: Aug 22, 2022
Observation date: Jun 04, 2022
Submitted by: CaraLundquist
Region: Denton County, Texas, United States
Verified by: jwileyrains
Verified date: Aug 22, 2022
Observation date: Jun 10, 2022
Submitted by: kimmyrn
Region: Bedford County, Tennessee, United States
Verified by: James Steen
Verified date: Aug 21, 2022
Observation date: Jun 26, 2021
Submitted by: Smalltowngirl
Region: Hawkins County, Tennessee, United States
Verified by: James Steen
Verified date: Aug 21, 2022
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