---
title: "Erlenbeulenfilz-Gallmilbe"
description: "Acalitus brevitarsus — Insekten & Spinnen. Acalitus brevitarsus is an eriophyid mite which induces domed, blister like swellings, known as galls, on some species of alder (Alnus species)."
canonical: https://animalchecklist.com/de/animal/alder-erineum-mite
last_updated: 2026-09-20
---

# Erlenbeulenfilz-Gallmilbe

> Acalitus brevitarsus — Insekten & Spinnen. Acalitus brevitarsus is an eriophyid mite which induces domed, blister like swellings, known as galls, on some species of alder (Alnus species).

- Scientific name: *Acalitus brevitarsus*
- Category: `insects` (Insekten & Spinnen)
- Habitats: `forest` (Wald)
- iNaturalist observations: 2457
- Wikidata: [Q10398216](https://www.wikidata.org/wiki/Q10398216)
- iNaturalist taxon: [334080](https://www.inaturalist.org/taxa/334080)

## Names

- en: Alder erineum mite
- de: Erlenbeulenfilz-Gallmilbe

## Countries with the most observations

GB (249), DE (165), FR (133), US (123), CA (47), AT (31), NL (30), LT (24), RU (21), ES (19), PT (18), BE (16)

## Summary

Acalitus brevitarsus is an eriophyid mite which induces domed, blister like swellings, known as galls, on some species of alder (Alnus species).

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

## Photo

![Erlenbeulenfilz-Gallmilbe](https://animalchecklist.com/img/animals/alder-erineum-mite/medium.jpg)

Photo: Stephen James McWilliam · CC0 · inaturalist — https://www.inaturalist.org/taxa/334080

## Machine access

`GET https://animalchecklist.com/api/v1/animals/alder-erineum-mite?lang=de` — see [openapi.json](https://animalchecklist.com/openapi.json).