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 49 - 72 of 4316 verified sightings
Observation date: Apr 17, 2020
Submitted by: luciainbloom
Region: Texas, Travis County, United States
Verified by: jwileyrains
Verified date: Sep 23, 2023
Observation date: Sep 17, 2023
Submitted by: eweber019
Region: Douglas County, Nebraska, United States
Verified by: Emily Geest
Verified date: Sep 18, 2023
Observation date: Apr 29, 2022
Submitted by: Rick Sinnott
Region: Catoosa County, Georgia, United States
Verified by: Mikelchap
Verified date: Aug 21, 2023
Observation date: Aug 02, 2023
Submitted by: scream of the b...
Region: Shelby County, Tennessee, United States
Verified by: James Steen
Verified date: Aug 16, 2023
Observation date: Jul 25, 2023
Submitted by: L.Hale
Region: Texas, Lubbock County, United States
Verified by: jwileyrains
Verified date: Jul 26, 2023
Observation date: Apr 13, 2023
Submitted by: tmblok87
Region: Bartow County, Georgia, United States
Verified by: Mikelchap
Verified date: Jul 23, 2023
Observation date: Jun 02, 2023
Submitted by: Sheryl Johnson
Region: Barnstable County, Massachusetts, United States
Verified by: jwileyrains
Verified date: Jul 16, 2023
Observation date: Jun 16, 2023
Submitted by: aarongunnar
Region: Langlade County, Wisconsin, United States
Verified by: jmgesell
Verified date: Jul 11, 2023
Observation date: Jun 20, 2023
Submitted by: ian pepper
Region: Essex County, Massachusetts, United States
Verified by: jwileyrains
Verified date: Jun 21, 2023
Observation date: May 26, 2023
Submitted by: Robert Gorman
Region: Litchfield County, Connecticut, United States
Verified by: jwileyrains
Verified date: Jun 14, 2023
Observation date: May 11, 2023
Submitted by: Eric Hartshaw
Region: Powell County, Kentucky, United States
Verified by: CA Ivy
Verified date: Jun 11, 2023
Observation date: May 12, 2023
Submitted by: Eric Hartshaw
Region: Powell County, Kentucky, United States
Verified by: CA Ivy
Verified date: Jun 11, 2023
Observation date: Jun 05, 2023
Submitted by: dlister
Region: Albany County, New York, United States
Verified by: jmgesell
Verified date: Jun 06, 2023
Observation date: Jun 01, 2023
Submitted by: ian pepper
Region: Essex County, Massachusetts, United States
Verified by: jwileyrains
Verified date: Jun 04, 2023
Observation date: Jun 01, 2023
Submitted by: Tom Dudones
Region: Franklin County, New York, United States
Verified by: jmgesell
Verified date: Jun 01, 2023
Observation date: May 27, 2023
Submitted by: Sometimes
Region: Ontario, Canada
Verified by: jmgesell
Verified date: May 30, 2023
Observation date: May 29, 2023
Submitted by: dlister
Region: Berkshire County, Massachusetts, United States
Verified by: jwileyrains
Verified date: May 29, 2023
Observation date: May 20, 2023
Submitted by: hollyhoitink
Region: Winnebago County, Wisconsin, United States
Verified by: jmgesell
Verified date: May 26, 2023
Observation date: May 23, 2023
Submitted by: ian pepper
Region: Essex County, Massachusetts, United States
Verified by: jwileyrains
Verified date: May 24, 2023
Observation date: May 22, 2023
Submitted by: Sometimes
Region: Ontario, Canada
Verified by: jmgesell
Verified date: May 23, 2023
Observation date: May 23, 2023
Submitted by: Sometimes
Region: Ontario, Canada
Verified by: jmgesell
Verified date: May 23, 2023
Observation date: May 23, 2023
Submitted by: Bob Jacobson
Region: Chippewa County, Wisconsin, United States
Verified by: jmgesell
Verified date: May 23, 2023
Observation date: May 23, 2023
Submitted by: Bob Jacobson
Region: Chippewa County, Wisconsin, United States
Verified by: jmgesell
Verified date: May 23, 2023
Observation date: May 23, 2023
Submitted by: Bob Jacobson
Region: Chippewa County, Wisconsin, United States
Verified by: jmgesell
Verified date: May 23, 2023
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