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 4376 verified sightings
Observation date: May 26, 2026
Submitted by: Graycatbird88
Region: Rockland County, New York, United States
Verified by: jmgesell
Verified date: May 26, 2026
Observation date: Mar 26, 2026
Submitted by: Jenphillippi
Region: Yancey County, North Carolina, United States
Verified by: Dennis Forsythe
Verified date: May 14, 2026
Observation date: May 12, 2026
Submitted by: gjkoppel
Region: Butler County, Pennsylvania, United States
Verified by: jmgesell
Verified date: May 12, 2026
Observation date: May 10, 2026
Submitted by: gjkoppel
Region: Butler County, Pennsylvania, United States
Verified by: jmgesell
Verified date: May 11, 2026
Observation date: May 09, 2026
Submitted by: drmarc60223
Region: Sauk County, Wisconsin, United States
Verified by: jmgesell
Verified date: May 10, 2026
Observation date: May 08, 2026
Submitted by: Graycatbird88
Region: Rockland County, New York, United States
Verified by: jmgesell
Verified date: May 10, 2026
Observation date: May 09, 2026
Submitted by: drmarc60223
Region: Sauk County, Wisconsin, United States
Verified by: jmgesell
Verified date: May 10, 2026
Observation date: May 09, 2026
Submitted by: drmarc60223
Region: Sauk County, Wisconsin, United States
Verified by: jmgesell
Verified date: May 10, 2026
Observation date: May 09, 2026
Submitted by: drmarc60223
Region: Sauk County, Wisconsin, United States
Verified by: jmgesell
Verified date: May 10, 2026
Observation date: Apr 05, 2020
Submitted by: Tommie Rogers
Region: Grundy County, Tennessee, United States
Verified by: CA Ivy
Verified date: May 10, 2026
Observation date: Mar 13, 2026
Submitted by: ezeemonee
Region: Lincoln County, Tennessee, United States
Verified by: CA Ivy
Verified date: May 10, 2026
Observation date: Mar 13, 2026
Submitted by: ezeemonee
Region: Lincoln County, Tennessee, United States
Verified by: CA Ivy
Verified date: May 10, 2026
Observation date: Apr 03, 2026
Submitted by: Lisa McClendon
Region: Craighead County, Arkansas, United States
Verified by: CA Ivy
Verified date: May 10, 2026
Observation date: Apr 03, 2026
Submitted by: Lisa McClendon
Region: Craighead County, Arkansas, United States
Verified by: CA Ivy
Verified date: May 10, 2026
Observation date: Apr 03, 2026
Submitted by: Tommie Rogers
Region: Marion County, Tennessee, United States
Verified by: CA Ivy
Verified date: May 10, 2026
Observation date: Apr 04, 2026
Submitted by: jkarthei
Region: Morgan County, Missouri, United States
Verified by: CA Ivy
Verified date: May 10, 2026
Observation date: Apr 05, 2026
Submitted by: jkarthei
Region: Morgan County, Missouri, United States
Verified by: CA Ivy
Verified date: May 10, 2026
Observation date: Apr 05, 2026
Submitted by: jkarthei
Region: Morgan County, Missouri, United States
Verified by: CA Ivy
Verified date: May 10, 2026
Observation date: Apr 05, 2026
Submitted by: jkarthei
Region: Morgan County, Missouri, United States
Verified by: CA Ivy
Verified date: May 10, 2026
Observation date: Apr 26, 2026
Submitted by: Cascade Colors
Region: Cumberland County, Tennessee, United States
Verified by: CA Ivy
Verified date: May 10, 2026
Observation date: May 03, 2026
Submitted by: drmarc60223
Region: Trempealeau County, Wisconsin, United States
Verified by: jmgesell
Verified date: May 04, 2026
Observation date: Apr 30, 2026
Submitted by: LittleWoodSatyr
Region: Defiance County, Ohio, United States
Verified by: rogerdowner
Verified date: May 04, 2026
Observation date: Apr 27, 2026
Submitted by: nikonbill
Region: Cumberland County, Pennsylvania, United States
Verified by: jmgesell
Verified date: Apr 29, 2026
Observation date: Apr 25, 2026
Submitted by: drmarc60223
Region: La Crosse County, Wisconsin, United States
Verified by: jmgesell
Verified date: Apr 26, 2026
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