warkruidsnuittorretje
CRCritically Endangered

warkruidsnuittorretje

Smicronyx jungermanniae

The warkruidsnuittorretje (Smicronyx jungermanniae) is a small weevil species belonging to the family Curculionidae. This specialized beetle is endemic to the Netherlands, where it has an extremely restricted distribution and is considered one of the country's rarest insects.

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Countries

Photo: (c) fotis-samaritakis, some rights reserved (CC BY-NC), uploaded by fotis-samaritakis

01Classification

Taxonomy & Classification

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Coleoptera

Family

Curculionidae

Genus

Smicronyx

warkruidsnuittorretje belongs to the family Curculionidae, order Coleoptera, within the Insecta class.

02Description

Species Profile

The warkruidsnuittorretje (Smicronyx jungermanniae) is a small weevil species belonging to the family Curculionidae. This specialized beetle is endemic to the Netherlands, where it has an extremely restricted distribution and is considered one of the country's rarest insects. The species is closely associated with specific host plants in the Apiaceae family, particularly water dropwort species, where both larvae and adults complete their life cycle. The weevil's larvae develop within the stems and seed heads of these plants, making it entirely dependent on the presence and health of its host vegetation. The species inhabits wetland environments, including marshes, wet meadows, and areas along waterways where its host plants naturally occur. Its critical endangerment status reflects the severe decline and fragmentation of suitable wetland habitats across its range. Agricultural intensification, drainage of wetlands, water management practices, and urban development have significantly reduced the availability of appropriate habitat. The species' highly specialized ecological requirements and limited dispersal ability make it particularly vulnerable to environmental changes. Conservation efforts focus on habitat protection and restoration of wetland areas, including maintaining appropriate water levels and preserving native plant communities. Monitoring programs track remaining populations, though the species' small size and cryptic nature make detection challenging. Collaborative efforts between conservation organizations, land managers, and researchers aim to identify and protect critical habitat areas while working to restore degraded wetland ecosystems that could support population recovery.

The primary threats to this species include habitat loss through wetland drainage and agricultural intensification, which eliminates the specialized plant communities it depends on. Water management practices and urban development further fragment and degrade remaining suitable habitats. The species' highly specialized ecological requirements and limited dispersal ability make it extremely vulnerable to these environmental changes.

Key Facts

IUCN StatusCritically Endangered (CR)
GroupInsects
03Habitat

Habitat & Distribution

This weevil inhabits wetland environments including marshes, wet meadows, and areas along waterways where its host plants in the Apiaceae family naturally occur. The species requires specific moisture conditions and native plant communities to complete its life cycle.

04Threats

Threats

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IUCN Red List: Critically Endangered

The primary threats to this species include habitat loss through wetland drainage and agricultural intensification, which eliminates the specialized plant communities it depends on. Water management practices and urban development further fragment and degrade remaining suitable habitats. The species' highly specialized ecological requirements and limited dispersal ability make it extremely vulnerable to these environmental changes.

Detailed threat classification data is sourced from IUCN assessments as they become available.

Community

Community Sightings

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07Sources

Sources & Attribution

How to Cite

IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS

GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org

This page: SpeciesRadar (2025). warkruidsnuittorretje (Smicronyx jungermanniae). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/warkruidsnuittorretje

Full citation guide & data usage terms