Entoma
Horace's duskywing, Erynnis horatius, plate

Skippers

Erynnis horatius

Horace's duskywing

After May, a single white spot in the forewing cell is the only reliable way to tell this skipper apart from its early spring look-alike.

WhereOak woodlands, brushy fields and roadsides
Size30 to 38 mm wingspan
WhenApril to October

Horace's duskywing is a brown skipper with white flecked spots across the forewing, including a white spot in the forewing cell that is larger on females, and males show a bold white line above the eye. It rests with wings spread flat rather than held upright.

Caterpillars feed only on oak leaves, while adults visit buttonbush, dogbane, goldenrod and mud puddles for moisture and nutrients. Multiple broods fly from spring through autumn, making this one of the most frequently seen duskywings in forest clearings and brushy fields.

Traits

Habitat

Woodland

Colour

Brown, White

Active

Day

To people

Visits mud puddles and garden flowers; does not bite or sting people.

Activity through the year

Often confused with

Juvenal's duskywingnot in guide
Erynnis juvenalis

Shows two pale spots near the leading edge of the ventral hindwing that Horace's duskywing lacks, and flies only in spring while Horace's duskywing continues into autumn.

Questions

Is the Horace's duskywing dangerous to people?

Visits mud puddles and garden flowers; does not bite or sting people.

When can you see the Horace's duskywing?

The Horace's duskywing can be seen from April to October, by day.

Plate retouched from a photo by Michael Newlon, CC BY 4.0, iNaturalist Licence

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Butterflies and moths›Skippers›Erynnis

Last updated 2026-09-26. Every entry is checked against published sources.