Juvenal's Duskywing
Erynnis juvenalis (Fabricius, 1793)
Family: Hesperiidae
Subfamily: Pyrginae
Identification: Upperside of male is brown with clear spots, indistinct dark markings, and scattered white hairs; female has larger markings and spots. Underside of hindwing has 2 round pale 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 1/4 - 1 15/16 inches (3.2 - 4.9 cm).
Life History: To wait for females, males perch in forest clearings or edges on bare twigs about 3-12 feet above the ground; they will often patrol from these perches. Females lay eggs singly on young leaves and seedlings of the host plants. Caterpillars feed on leaves and rest in nests of rolled or tied leaves; fully-grown caterpillars hibernate.
Flight: One brood from April-June, emerging as early as late January in peninsular Florida.
Caterpillar Hosts: Tree and shrub oaks (Quercus species).
Adult Food: Nectar from flowers of winter cress, dandelion, wild plum, wisteria, blueberry, Carolina vetch, redbud, and lilac.
Habitat: Oak woods or scrub and associated edges or fields.
Range: Nova Scotia and central New England west through southern Manitoba to the Dakotas and northeastern Wyoming; south through most of the eastern United States to Florida, the Gulf states, and Texas. White-fringed populations occur in west Texas, New Mexico, and central Arizona south to central 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 1 - 24 of 4310 verified sightings
Observation date: Apr 04, 2025
Submitted by: mikeandpaige
Region: Knox County, Tennessee, United States
Verified by: James Steen
Verified date: Apr 06, 2025
Observation date: Mar 25, 2025
Submitted by: Sheilabean
Region: Johnson County, Texas, United States
Verified by: jwileyrains
Verified date: Mar 26, 2025
Observation date: Mar 19, 2025
Submitted by: ezeemonee
Region: Charleston County, South Carolina, United States
Verified by: Dennis Forsythe
Verified date: Mar 24, 2025
Observation date: Mar 15, 2025
Submitted by: polylepis
Region: Texas, San Jacinto County, United States
Verified by: jwileyrains
Verified date: Mar 23, 2025
Observation date: Mar 15, 2025
Submitted by: polylepis
Region: Texas, San Jacinto County, United States
Verified by: jwileyrains
Verified date: Mar 23, 2025
Observation date: Mar 23, 2024
Submitted by: polylepis
Region: Texas, San Jacinto County, United States
Verified by: jwileyrains
Verified date: Mar 23, 2025
Observation date: Mar 15, 2025
Submitted by: polylepis
Region: Texas, San Jacinto County, United States
Verified by: jwileyrains
Verified date: Mar 23, 2025
Observation date: May 14, 2023
Submitted by: kzmmrmn
Region: Warren County, New Jersey, United States
Verified by: jwileyrains
Verified date: Nov 20, 2024
Observation date: May 31, 2024
Submitted by: dvollmar
Region: Worcester County, Massachusetts, United States
Verified by: jwileyrains
Verified date: Aug 09, 2024
Observation date: Aug 05, 2024
Submitted by: Christinalea
Region: Texas, Wichita County, United States
Verified by: jwileyrains
Verified date: Aug 06, 2024
Observation date: Mar 27, 2024
Submitted by: atinkof2
Region: Georgia, Walker County, United States
Verified by: Mikelchap
Verified date: Jun 09, 2024
Observation date: May 26, 2024
Submitted by: John Terpstra
Region: Ontario, Canada
Verified by: jmgesell
Verified date: Jun 02, 2024
Observation date: May 31, 2024
Submitted by: Tom Dudones
Region: Franklin County, New York, United States
Verified by: jmgesell
Verified date: Jun 02, 2024
Observation date: May 24, 2024
Submitted by: jmgesell
Region: Monroe County, Pennsylvania, United States
Verified by: davidwright
Verified date: May 29, 2024
Observation date: May 18, 2024
Submitted by: John Terpstra
Region: Ontario, Canada
Verified by: jmgesell
Verified date: May 24, 2024
Observation date: Jul 05, 2022
Submitted by: John LeBlanc
Region: Chesterfield County, Virginia, United States
Verified by: jwileyrains
Verified date: May 23, 2024
Observation date: Apr 17, 2023
Submitted by: John LeBlanc
Region: Chesterfield County, Virginia, United States
Verified by: jwileyrains
Verified date: May 23, 2024
Observation date: Oct 01, 2022
Submitted by: Team-Chick
Region: Virginia, York County, United States
Verified by: jwileyrains
Verified date: May 23, 2024
Observation date: May 08, 2024
Submitted by: Bob Jacobson
Region: Chippewa County, Wisconsin, United States
Verified by: jmgesell
Verified date: May 22, 2024
Observation date: May 18, 2024
Submitted by: Bob Jacobson
Region: Chippewa County, Wisconsin, United States
Verified by: jmgesell
Verified date: May 22, 2024
Observation date: May 19, 2024
Submitted by: Sometimes
Region: Ontario, Canada
Verified by: jmgesell
Verified date: May 22, 2024
Observation date: May 17, 2024
Submitted by: BeaLaporte
Region: Ontario, Canada
Verified by: jmgesell
Verified date: May 19, 2024
Observation date: May 13, 2024
Submitted by: Bob Jacobson
Region: Chippewa County, Wisconsin, United States
Verified by: jmgesell
Verified date: May 16, 2024
Observation date: May 13, 2024
Submitted by: Bob Jacobson
Region: Chippewa County, Wisconsin, United States
Verified by: jmgesell
Verified date: May 16, 2024
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