---
title: "Horace's Duskywing"
description: "Erynnis horatius — Owady i pająki. Erynnis horatius, commonly known as Horace's duskywing, is a species of butterfly in the family Hesperiidae."
canonical: https://animalchecklist.com/pl/animal/horace-s-duskywing
last_updated: 2026-09-20
---

# Horace's Duskywing

> Erynnis horatius — Owady i pająki. Erynnis horatius, commonly known as Horace's duskywing, is a species of butterfly in the family Hesperiidae.

- Scientific name: *Erynnis horatius*
- Category: `insects` (Owady i pająki)
- Habitats: unknown
- iNaturalist observations: 36881
- Wikidata: [Q1312597](https://www.wikidata.org/wiki/Q1312597)
- iNaturalist taxon: [50071](https://www.inaturalist.org/taxa/50071)

## Names

- en: Horace's Duskywing

## Countries with the most observations

US (27008), CA (57)

## Summary

Erynnis horatius, commonly known as Horace's duskywing, is a species of butterfly in the family Hesperiidae. It is found in the United States from Massachusetts to Florida, and west to eastern South Dakota, the Gulf Coast, south-eastern Utah, Colorado, north-eastern Arizona, and New Mexico. It is listed as a species of special concern in the US state of Connecticut.
Fringes are brown. Upperside of male forewing is dark brown with little contrast and no white overscaling. Upperside of female forewing is light brown with a contrasting pattern and large transparent spots. Underside of hindwing is usually without two…

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Erynnis_horatius

## Photo

![Horace's Duskywing](https://animalchecklist.com/img/animals/horace-s-duskywing/medium.jpg)

Photo: Adam Pitcher · CC0 · inaturalist — https://www.inaturalist.org/observations/22733471

## Machine access

`GET https://animalchecklist.com/api/v1/animals/horace-s-duskywing?lang=pl` — see [openapi.json](https://animalchecklist.com/openapi.json).