Red Underwing
EN

Red Underwing

Catocala nupta

Unknown

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

Overview

A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.

The Red Underwing faces severe population declines across its European range due to widespread loss of mature poplar and willow woodlands, its primary breeding habitat. Intensive forestry practices that favor monoculture plantations over diverse riparian forests have eliminated crucial host trees, while urban development has fragmented remaining suitable habitats. Climate change compounds these pressures by altering the timing of larval development relative to host plant phenology.

Threat summary

Habitat

The Red Underwing inhabits mature deciduous woodlands, particularly riparian forests dominated by poplars and willows along river valleys and wetland edges. Adults require dense canopy cover for roosting during daylight hours, while larvae depend on specific host trees including black poplar, aspen, and various willow species.

Frequently asked questions

Why is Red Underwing classified as Endangered?
Red Underwing is classified as Endangered — facing a very high risk of extinction in the wild — because population numbers are declining steeply and key habitats are under sustained pressure. The Red Underwing faces severe population declines across its European range due to widespread loss of mature poplar and willow woodlands, its primary breeding habitat. Intensive forestry practices that favor monoculture plantations over diverse riparian forests have eliminated crucial host trees, while urban development has fragmented remaining suitable habitats. Climate change compounds these pressures by altering the timing of larval development relative to host plant phenology.
Where does Red Underwing live?
Red Underwing occurs in Åland Islands, Albania, Andorra, Armenia, Austria, and Belarus (plus 52 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 Red Underwing?
The main threats to Red Underwing 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.

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