---
title: "Northern Dusky Slug"
description: "Arion fuscus — Outros animais. Arion fuscus, commonly known as the dusky arion or dusky slug, is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Arionidae, the roundback slugs."
canonical: https://animalchecklist.com/pt/animal/northern-dusky-slug
last_updated: 2026-09-20
---

# Northern Dusky Slug

> Arion fuscus — Outros animais. Arion fuscus, commonly known as the dusky arion or dusky slug, is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Arionidae, the roundback slugs.

- Scientific name: *Arion fuscus*
- Category: `other` (Outros animais)
- Habitats: `forest` (Floresta)
- iNaturalist observations: 6341
- Wikidata: [Q290431](https://www.wikidata.org/wiki/Q290431)
- iNaturalist taxon: [324194](https://www.inaturalist.org/taxa/324194)

## Names

- en: Northern Dusky Slug
- de: Braune Wegschnecke
- fr: Loche rousse
- nl: Bruine wegslak

## Countries with the most observations

RU (1050), UA (299), FI (289), LT (163), PL (89), US (56), BY (45), NO (31), SE (31), DE (28), CA (25), LV (25)

## Summary

Arion fuscus, commonly known as the dusky arion or dusky slug, is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Arionidae, the roundback slugs.
Arion subfuscus (Draparnaud, 1805) is considered by some authors to be a partial synonym for Arion fuscus. Arion subfuscus (Draparnaud, 1805) and A. fuscus (Müller, 1774) have very similar morphology and have overlapping distributional ranges in northwestern Europe. Arion fuscus is widespread throughout Central, North and East Europe whereas A. subfuscus is restricted to West Europe. (For practical purposes the two are…

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

## Photo

![Northern Dusky Slug](https://animalchecklist.com/img/animals/northern-dusky-slug/medium.jpg)

Photo: Thomas · CC0 · inaturalist — https://www.inaturalist.org/observations/160946785

## Machine access

`GET https://animalchecklist.com/api/v1/animals/northern-dusky-slug?lang=pt` — see [openapi.json](https://animalchecklist.com/openapi.json).