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.
Please donate!
We depend on donations to keep Butterflies and Moths of North America freely available. We want to express our gratitude to all who showed their support by making a contribution this year. You can donate to support this project at any time.
Advertise with us!
Do you have a product or service that you think would interest BAMONA users? If you would like to advertise on this website, contact us by email, or use the contact form and select the "Advertising" category.
Verified Sightings
Displaying 241 - 264 of 2939 verified sightings
Observation date: Jul 24, 2022
Submitted by: Mendrola
Region: Bucks County, Pennsylvania, United States
Verified by: davidwright
Verified date: Jul 26, 2022
Observation date: Jul 22, 2022
Submitted by: jhdwelly
Region: Barnstable County, Massachusetts, United States
Verified by: jwileyrains
Verified date: Jul 23, 2022
Observation date: Jul 16, 2022
Submitted by: Eric Hartshaw
Region: Lycoming County, Pennsylvania, United States
Verified by: davidwright
Verified date: Jul 20, 2022
Observation date: Jul 14, 2022
Submitted by: Jim Lowe
Region: Tompkins County, New York, United States
Verified by: jmgesell
Verified date: Jul 20, 2022
Observation date: Jul 19, 2022
Submitted by: KShell
Region: Dixie County, Florida, United States
Verified by: John Calhoun
Verified date: Jul 19, 2022
Observation date: Jul 16, 2022
Submitted by: twofried
Region: Taos County, New Mexico, United States
Verified by: stevecary
Verified date: Jul 19, 2022
Observation date: Jul 13, 2022
Submitted by: OspreyJ
Region: Maryland, United States
Verified by: jwileyrains
Verified date: Jul 13, 2022
Observation date: Jul 12, 2022
Submitted by: therapypetz
Region: Broward County, Florida, United States
Verified by: John Calhoun
Verified date: Jul 12, 2022
Observation date: Jul 07, 2022
Submitted by: pkondrashov
Region: Knox County, Missouri, United States
Verified by: CA Ivy
Verified date: Jul 11, 2022
Observation date: Jun 17, 2022
Submitted by: rpanetta
Region: Gwinnett County, Georgia, United States
Verified by: Mikelchap
Verified date: Jul 10, 2022
Observation date: Jul 06, 2022
Submitted by: jmgesell
Region: Bucks County, Pennsylvania, United States
Verified by: davidwright
Verified date: Jul 07, 2022
Observation date: Jul 04, 2022
Submitted by: jwilkinson
Region: Howard County, Maryland, United States
Verified by: jwileyrains
Verified date: Jul 04, 2022
Observation date: Jun 30, 2022
Submitted by: pkondrashov
Region: Adair County, Missouri, United States
Verified by: CA Ivy
Verified date: Jul 03, 2022
Observation date: Jun 20, 2022
Submitted by: Rozelle Wright
Region: Los Alamos County, New Mexico, United States
Verified by: stevecary
Verified date: Jul 03, 2022
Observation date: Jun 24, 2022
Submitted by: twofried
Region: Taos County, New Mexico, United States
Verified by: stevecary
Verified date: Jul 02, 2022
Observation date: Jun 24, 2022
Submitted by: twofried
Region: Taos County, New Mexico, United States
Verified by: stevecary
Verified date: Jul 02, 2022
Observation date: Jun 30, 2022
Submitted by: Team-Chick
Region: Virginia, York County, United States
Verified by: drerbium
Verified date: Jun 30, 2022
Observation date: Jun 27, 2022
Submitted by: James Steen
Region: Harvey County, Kansas, United States
Verified by: James Steen
Verified date: Jun 27, 2022
Observation date: Jun 21, 2022
Submitted by: pkondrashov
Region: Adair County, Missouri, United States
Verified by: CA Ivy
Verified date: Jun 26, 2022
Observation date: Jun 16, 2022
Submitted by: Team-Chick
Region: Virginia, York County, United States
Verified by: drerbium
Verified date: Jun 26, 2022
Observation date: Jun 25, 2022
Submitted by: MartyWalker
Region: Nottoway County, Virginia, United States
Verified by: drerbium
Verified date: Jun 26, 2022
Observation date: Jul 31, 2021
Submitted by: julmast
Region: Starke County, Indiana, United States
Verified by: jmgesell
Verified date: Jun 25, 2022
Observation date: Apr 17, 2021
Submitted by: Fetzkorn
Region: Craig County, Virginia, United States
Verified by: drerbium
Verified date: Jun 24, 2022
Observation date: Jun 18, 2022
Submitted by: StevebrownLepid
Region: Lynchburg, Virginia, United States
Verified by: drerbium
Verified date: Jun 21, 2022
- ‹ previous
- 11 of 123
- next ›