---
title: "Rębacz szary"
description: "Rhagium mordax — Owady i pająki. Rhagium mordax, the black-spotted longhorn beetle, is a species of long-horned beetle."
canonical: https://animalchecklist.com/pl/animal/blackspotted-longhorn-beetle
last_updated: 2026-09-20
---

# Rębacz szary

> Rhagium mordax — Owady i pająki. Rhagium mordax, the black-spotted longhorn beetle, is a species of long-horned beetle.

- Scientific name: *Rhagium mordax*
- Category: `insects` (Owady i pająki)
- Habitats: `forest` (Las)
- iNaturalist observations: 8257
- Wikidata: [Q248328](https://www.wikidata.org/wiki/Q248328)
- iNaturalist taxon: [320109](https://www.inaturalist.org/taxa/320109)

## Names

- en: Blackspotted Longhorn Beetle
- de: Schwarzfleckiger Zangenbock
- fr: Rhagie mordante
- nl: Geelzwarte ribbelboktor
- pl: Rębacz szary

## Countries with the most observations

DE (1343), RU (1173), FI (738), GB (738), DK (570), AT (557), PL (454), SE (421), CH (329), LT (251), FR (238), CZ (197)

## Summary

Rhagium mordax, the black-spotted longhorn beetle, is a species of long-horned beetle. This beetle is found throughout Europe and to Kazakhstan and Russia. Larvae develop in silver fir, hazel, European weeping birch, European beech, and the European chestnut. Ischnoceros rusticus is an ichneumonid parasitoid wasp that feds on Rhagium mordax larvae.

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

## Photo

![Rębacz szary](https://animalchecklist.com/img/animals/blackspotted-longhorn-beetle/medium.jpg)

Photo: Алексей Ябс · CC0 · inaturalist — https://www.inaturalist.org/observations/81190915

## Machine access

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