VU

Tychius trivialis

Unknown

Overview

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

Tychius trivialis faces significant population declines primarily due to the intensification of agricultural practices and widespread use of pesticides that eliminate both the weevil and its host plants. Habitat fragmentation from urban development and conversion of natural grasslands to monoculture crops has reduced available breeding sites. Climate change is altering the distribution and phenology of its leguminous host plants, disrupting the weevil's reproductive cycle and larval development.

Threat summary

Habitat

This weevil species inhabits natural grasslands, meadows, and field margins where its leguminous host plants grow. It requires areas with diverse plant communities that support both adult feeding and larval development within seed pods.

Other threatened species in Curculionidae

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Carphoborus rossicus

Unknown
Limnobaris t-albumVU

Limnobaris t-album

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Dorytomus hirtipennis

Unknown
Brachyderes lusitanicusVU

Brachyderes lusitanicus

Unknown

Threatened in Austria

VU

Lepiota echinella

Unknown
EN

Lyophyllum deliberatum

Unknown
VU

Large Tree-chernes

Dendrochernes cyrneus

Unknown
EN

Pipizella nigriana

Unknown

Frequently asked questions

Why is Tychius trivialis classified as Vulnerable?
Tychius trivialis 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. Tychius trivialis faces significant population declines primarily due to the intensification of agricultural practices and widespread use of pesticides that eliminate both the weevil and its host plants. Habitat fragmentation from urban development and conversion of natural grasslands to monoculture crops has reduced available breeding sites. Climate change is altering the distribution and phenology of its leguminous host plants, disrupting the weevil's reproductive cycle and larval development.
Where does Tychius trivialis live?
Tychius trivialis occurs in Austria, Belgium, Czechia, Denmark, Estonia, and Hungary (plus 5 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 Tychius trivialis?
The main threats to Tychius trivialis 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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