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 577 - 600 of 2955 verified sightings
Observation date: May 03, 2020
Submitted by: Bill Uttenweiler
Region: Brevard County, Florida, United States
Verified by: John Calhoun
Verified date: May 04, 2020
Observation date: Apr 27, 2020
Submitted by: Michael Weisensee
Region: Charlotte County, Florida, United States
Verified by: John Calhoun
Verified date: Apr 27, 2020
Observation date: Apr 25, 2020
Submitted by: ezettler
Region: Alachua County, Florida, United States
Verified by: John Calhoun
Verified date: Apr 26, 2020
Observation date: Apr 21, 2020
Submitted by: Mapper
Region: Johnson County, Illinois, United States
Verified by: rogerdowner
Verified date: Apr 22, 2020
Observation date: Apr 19, 2020
Submitted by: Michael Weisensee
Region: Charlotte County, Florida, United States
Verified by: John Calhoun
Verified date: Apr 19, 2020
Observation date: Apr 01, 2020
Submitted by: Michael Weisensee
Region: Sarasota County, Florida, United States
Verified by: John Calhoun
Verified date: Apr 01, 2020
Observation date: Mar 11, 2020
Submitted by: vldeloach
Region: Cherokee County, Georgia, United States
Verified by: Mikelchap
Verified date: Mar 29, 2020
Observation date: Jan 29, 2020
Submitted by: raven10322
Region: Palm Beach County, Florida, United States
Verified by: CA Ivy
Verified date: Mar 23, 2020
Observation date: Aug 10, 2019
Submitted by: Garrettlh4
Region: Texas, Upshur County, United States
Verified by: stomlins701
Verified date: Mar 13, 2020
Observation date: Jul 26, 2018
Submitted by: emilye
Region: Centre County, Pennsylvania, United States
Verified by: davidwright
Verified date: Mar 11, 2020
Observation date: Aug 20, 2019
Submitted by: stevecary
Region: Santa Fe County, New Mexico, United States
Verified by: stevecary
Verified date: Jan 31, 2020
Observation date: Jun 28, 2019
Submitted by: stevecary
Region: New Mexico, United States
Verified by: stevecary
Verified date: Jan 27, 2020
Observation date: Jun 08, 2019
Submitted by: stevecary
Region: Santa Fe County, New Mexico, United States
Verified by: stevecary
Verified date: Jan 26, 2020
Observation date: Jul 11, 2019
Submitted by: ezeemonee
Region: Escambia County, Florida, United States
Verified by: John Calhoun
Verified date: Jan 11, 2020
Observation date: Jan 10, 2020
Submitted by: Bill Uttenweiler
Region: Brevard County, Florida, United States
Verified by: John Calhoun
Verified date: Jan 10, 2020
Observation date: Aug 04, 2019
Submitted by: John Peplinski
Region: Huntingdon County, Pennsylvania, United States
Verified by: davidwright
Verified date: Dec 21, 2019
Observation date: Aug 02, 2013
Submitted by: chuck meier
Region: Bucks County, Pennsylvania, United States
Verified by: davidwright
Verified date: Dec 15, 2019
Observation date: Nov 11, 2019
Submitted by: Bill Uttenweiler
Region: Brevard County, Florida, United States
Verified by: John Calhoun
Verified date: Nov 19, 2019
Observation date: Aug 30, 2018
Submitted by: TomObrock
Region: Lee County, Florida, United States
Verified by: John Calhoun
Verified date: Nov 10, 2019
Observation date: Aug 10, 2017
Submitted by: Debo Boddiford
Region: Allendale County, South Carolina, United States
Verified by: Dennis Forsythe
Verified date: Nov 03, 2019
Observation date: Sep 01, 2019
Submitted by: williampaulwhite17
Region: Dallas County, Texas, United States
Verified by: stomlins701
Verified date: Oct 28, 2019
Observation date: Oct 04, 2019
Submitted by: Michael Weisensee
Region: Charlotte County, Florida, United States
Verified by: John Calhoun
Verified date: Oct 04, 2019
Observation date: Sep 29, 2019
Submitted by: Argyle
Region: Brevard County, Florida, United States
Verified by: John Calhoun
Verified date: Sep 30, 2019
Observation date: Sep 29, 2019
Submitted by: ships333
Region: Chester County, Pennsylvania, United States
Verified by: davidwright
Verified date: Sep 30, 2019
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