Hemlock Yellow Conch
VU

Hemlock Yellow Conch

Aethes beatricella

Unknown

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

Overview

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

The Hemlock Yellow Conch faces severe pressure from the widespread decline of its host plant, eastern hemlock (Tsuga canadensis), which has been devastated by the invasive hemlock woolly adelgid across much of its North American range. Climate change compounds this threat by altering the temperature and moisture conditions that both the moth and its hemlock hosts require for survival. Forest fragmentation and logging operations further reduce available habitat, while the species' specialized feeding requirements make it particularly vulnerable to any disruption of hemlock forest ecosystems.

Threat summary

Habitat

This specialized moth inhabits mature eastern hemlock forests across northeastern North America, where larvae feed exclusively on hemlock foliage. The species requires intact forest canopies with stable temperature and humidity conditions typical of old-growth hemlock stands.

TERRESTRIAL· major

Frequently asked questions

Why is Hemlock Yellow Conch classified as Vulnerable?
Hemlock Yellow Conch is classified as Vulnerable because the population is declining and the species faces a high risk of extinction in the medium-term future if current pressures continue. The Hemlock Yellow Conch faces severe pressure from the widespread decline of its host plant, eastern hemlock (Tsuga canadensis), which has been devastated by the invasive hemlock woolly adelgid across much of its North American range. Climate change compounds this threat by altering the temperature and moisture conditions that both the moth and its hemlock hosts require for survival. Forest fragmentation and logging operations further reduce available habitat, while the species' specialized feeding requirements make it particularly vulnerable to any disruption of hemlock forest ecosystems.
Where does Hemlock Yellow Conch live?
Hemlock Yellow Conch occurs in Croatia, Denmark, Finland, France, Germany, and Italy (plus 6 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 Hemlock Yellow Conch?
The main threats to Hemlock Yellow Conch 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.