VU

Trypophloeus alni

Local name: leppäkaarnuri

Unknown

Overview

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

The leppäkaarnuri faces severe population decline primarily due to the loss of its specialized habitat requirements. As a bark beetle dependent on specific alder species, it is particularly vulnerable to forest management practices that remove dead and dying alder trees, which serve as essential breeding sites. Climate change further threatens the species by altering the moisture and temperature conditions necessary for successful reproduction and larval development.

Threat summary

Habitat

The leppäkaarnuri inhabits alder forests and wetland margins where it breeds exclusively in the bark of dead or dying alder trees (Alnus species). This specialized bark beetle requires specific moisture and temperature conditions found in decaying alder wood, making it highly dependent on natural forest dynamics that maintain a supply of suitable breeding substrate.

Other threatened species in Curculionidae

strandsenapvivelCR

strandsenapvivel

Ceutorhynchus scapularis

Unknown
VU

lusernvivel

Sitona humeralis

Unknown
VU

Bradybatus kellneri

Unknown
VU

Pygmy Elm Bark Beetle

Scolytus pygmaeus

Unknown

Threatened in Estonia

Calidris ferrugineaVU

Calidris ferruginea

Declining
VU

Syndyas nigripes

Unknown
Adonis BlueVU

Adonis Blue

Lysandra bellargus

Unknown
agnhodeedderkoppCR

agnhodeedderkopp

Walckenaeria alticeps

Unknown

Frequently asked questions

Why is leppäkaarnuri classified as Vulnerable?
leppäkaarnuri 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 leppäkaarnuri faces severe population decline primarily due to the loss of its specialized habitat requirements. As a bark beetle dependent on specific alder species, it is particularly vulnerable to forest management practices that remove dead and dying alder trees, which serve as essential breeding sites. Climate change further threatens the species by altering the moisture and temperature conditions necessary for successful reproduction and larval development.
Where does leppäkaarnuri live?
leppäkaarnuri occurs in Estonia, Finland, Germany, Latvia, Norway, and Poland (plus 2 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 leppäkaarnuri?
The main threats to leppäkaarnuri 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.