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 481 - 504 of 2945 verified sightings
Observation date: May 07, 2020
Submitted by: Jeff Trahan
Region: Grant Parish, Louisiana, United States
Verified by: CA Ivy
Verified date: Sep 03, 2020
Observation date: May 16, 2020
Submitted by: Jeff Trahan
Region: Grant Parish, Louisiana, United States
Verified by: CA Ivy
Verified date: Sep 03, 2020
Observation date: Apr 26, 2020
Submitted by: theaquaholic
Region: Lafayette Parish, Louisiana, United States
Verified by: CA Ivy
Verified date: Sep 03, 2020
Observation date: Jun 12, 2020
Submitted by: lawandasmithmobley
Region: Grant Parish, Louisiana, United States
Verified by: CA Ivy
Verified date: Sep 03, 2020
Observation date: Jun 22, 2020
Submitted by: patbell
Region: Seminole County, Florida, United States
Verified by: John Calhoun
Verified date: Sep 01, 2020
Observation date: Aug 31, 2020
Submitted by: Dennis Forsythe
Region: Charleston County, South Carolina, United States
Verified by: Dennis Forsythe
Verified date: Sep 01, 2020
Observation date: Aug 29, 2020
Submitted by: Jean Fontaine
Region: Greenville County, South Carolina, United States
Verified by: Dennis Forsythe
Verified date: Sep 01, 2020
Observation date: Aug 28, 2020
Submitted by: Dennis Forsythe
Region: Charleston County, South Carolina, United States
Verified by: Dennis Forsythe
Verified date: Aug 29, 2020
Observation date: Aug 26, 2020
Submitted by: Dennis Forsythe
Region: Charleston County, South Carolina, United States
Verified by: Dennis Forsythe
Verified date: Aug 28, 2020
Observation date: Aug 20, 2020
Submitted by: Dennis Forsythe
Region: Charleston County, South Carolina, United States
Verified by: Dennis Forsythe
Verified date: Aug 21, 2020
Observation date: Aug 18, 2020
Submitted by: DeepSkyKelly
Region: Colfax County, New Mexico, United States
Verified by: stevecary
Verified date: Aug 18, 2020
Observation date: Aug 17, 2020
Submitted by: ReverendSaul
Region: Laurens County, South Carolina, United States
Verified by: Dennis Forsythe
Verified date: Aug 17, 2020
Observation date: Aug 14, 2020
Submitted by: easleyjill@gmail.com
Region: Broward County, Florida, United States
Verified by: John Calhoun
Verified date: Aug 16, 2020
Observation date: Aug 03, 2019
Submitted by: Niayre
Region: Cobb County, Georgia, United States
Verified by: Mikelchap
Verified date: Aug 15, 2020
Observation date: Aug 09, 2020
Submitted by: Niayre
Region: Cobb County, Georgia, United States
Verified by: Mikelchap
Verified date: Aug 14, 2020
Observation date: Aug 13, 2020
Submitted by: Stan C
Region: Collier County, Florida, United States
Verified by: John Calhoun
Verified date: Aug 13, 2020
Observation date: Aug 10, 2020
Submitted by: Becky Cover
Region: Rockdale County, Georgia, United States
Verified by: Mikelchap
Verified date: Aug 13, 2020
Observation date: Aug 08, 2020
Submitted by: David Trently
Region: Luzerne County, Pennsylvania, United States
Verified by: davidwright
Verified date: Aug 09, 2020
Observation date: Aug 01, 2020
Submitted by: MSEmbeck
Region: Dauphin County, Pennsylvania, United States
Verified by: davidwright
Verified date: Aug 06, 2020
Observation date: Jul 31, 2020
Submitted by: elopm
Region: Johnson County, Georgia, United States
Verified by: Mikelchap
Verified date: Aug 03, 2020
Observation date: Jul 24, 2020
Submitted by: tjunderwood
Region: Berks County, Pennsylvania, United States
Verified by: davidwright
Verified date: Aug 01, 2020
Observation date: Jul 28, 2020
Submitted by: Jess D
Region: Paulding County, Georgia, United States
Verified by: Mikelchap
Verified date: Jul 30, 2020
Observation date: Jul 28, 2020
Submitted by: JoyceSw
Region: Marion County, Florida, United States
Verified by: John Calhoun
Verified date: Jul 28, 2020
Observation date: Jul 28, 2020
Submitted by: DeepSkyKelly
Region: Colfax County, New Mexico, United States
Verified by: stevecary
Verified date: Jul 28, 2020
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