Attributes of Erynnis juvenalis
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.
Taxonomy Notes:
Images of Erynnis juvenalis
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The map below displays all verified sighting records in the BAMONA database for this species. Each record is indicated with a yellow dot. The orange dots on the map provide access to information about the 400 most recently verified sightings of this species. In some instances, there are several records at the same location. Use the table view to access these records.
Instructions: Click on the map and move your mouse to pan.
Zoom by using the plus [+] and minus [-] on the left side of the map.
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The fifty most recently verified sightings are below. See more recently verified sightings of all species.
| Observation Date | Submitter | Region |
Verified Date |
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|---|---|---|---|---|---|
| January 01, 1950 | legacy.reporter | Hidalgo County, New Mexico, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Luna County, New Mexico, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Union County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Warren County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Sussex County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Somerset County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Passaic County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Salem County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Ocean County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Morris County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Monmouth County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Mercer County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Middlesex County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Hunterdon County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Gloucester County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Cape May County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Cumberland County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Essex County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Camden County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Burlington County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Atlantic County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Bergen County, New Jersey, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Strafford County, New Hampshire, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Rockingham County, New Hampshire, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Merrimack County, New Hampshire, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Hillsborough County, New Hampshire, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Cheshire County, New Hampshire, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Grafton County, New Hampshire, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Carroll County, New Hampshire, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Belknap County, New Hampshire, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Washington County, Nebraska, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Sarpy County, Nebraska, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Rock County, Nebraska, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Nemaha County, Nebraska, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Cass County, Nebraska, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Colfax County, Nebraska, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Douglas County, Nebraska, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Dodge County, Nebraska, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Knox County, Nebraska, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Keya Paha County, Nebraska, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Cherry County, Nebraska, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Brown County, Nebraska, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Winston County, Alabama, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Tuscaloosa County, Alabama, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Jackson County, Alabama, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Madison County, Alabama, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Coosa County, Alabama, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | DeKalb County, Alabama, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Cleburne County, Alabama, United States | December 31, 2004 | Details | |
| January 01, 1950 | legacy.reporter | Cherokee County, Alabama, United States | December 31, 2004 | Details |
