Morimus asper
CR

Morimus asper

Unknown

Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Morimus_asper

Overview

Lamie bûcheron (Morimus asper) is a large, robust longhorn beetle characterized by its distinctive black coloration and prominent antennae that can exceed body length in males. This saproxylic species plays a crucial ecological role as a decomposer, with its larvae developing in decaying hardwood trees, particularly oak, beech, and other deciduous species, helping to recycle nutrients in forest ecosystems.

Morimus asper, the Great Capricorn Beetle, faces severe population declines primarily due to habitat loss and fragmentation of old-growth deciduous forests. The species depends on mature oak and beech trees for breeding, but deforestation, urbanization, and intensive forest management have drastically reduced suitable habitat across its European range.

Threat summary

Habitat

This beetle inhabits mature deciduous and mixed forests with abundant dead wood, particularly favoring sun-exposed dead trunks and large branches of oak, beech, and other hardwood species. The species requires forests with a continuous supply of decaying wood in various stages of decomposition, typically found in old-growth stands or forest edges with natural tree mortality.

Frequently asked questions

Why is Morimus asper classified as Critically Endangered?
Morimus asper is classified as Critically Endangered — facing an extremely high risk of extinction in the wild — because population sizes are very small, declining sharply, or restricted to a tiny range. Morimus asper, the Great Capricorn Beetle, faces severe population declines primarily due to habitat loss and fragmentation of old-growth deciduous forests. The species depends on mature oak and beech trees for breeding, but deforestation, urbanization, and intensive forest management have drastically reduced suitable habitat across its European range.
Where does Morimus asper live?
Morimus asper occurs in Albania, Austria, Bangladesh, Belgium, Bosnia & Herzegovina, and Bulgaria (plus 24 other countries). Country-level distribution data is sourced from the IUCN Red List and cross-referenced with GBIF occurrences.
What are the main threats to Morimus asper?
The main threats to Morimus asper are ai-1, ai-2, ai-3, and ai-4. The full IUCN-classified threat record for this species is detailed on the species page.

Get weekly conservation intelligence

One short digest a week of the most striking species and country data we ship, plus breaking conservation news paired with our database where it matters.

Free, no spam. One-click unsubscribe in every email.