CRCritically Endangered

staartstrekspin

Tetragnatha reimoseri

The staartstrekspin (Tetragnatha reimoseri) is a critically endangered orb weaver spider endemic to the Netherlands. This small arachnid belongs to the long-jawed orb weaver family Tetragnathidae, characterized by their elongated bodies and distinctive web-building behavior.

7

Countries

01Classification

Taxonomy & Classification

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Tetragnathidae

Genus

Tetragnatha

staartstrekspin belongs to the family Tetragnathidae, order Araneae, within the Arachnida class.

02Description

Species Profile

The staartstrekspin (Tetragnatha reimoseri) is a critically endangered orb weaver spider endemic to the Netherlands. This small arachnid belongs to the long-jawed orb weaver family Tetragnathidae, characterized by their elongated bodies and distinctive web-building behavior. The species was historically found in wetland environments, particularly in reed beds and marshy areas along waterways. Like other Tetragnatha species, it constructs semi-permanent webs to capture flying insects, playing a role in local ecosystem pest control. The staartstrekspin faces severe population pressures due to habitat loss and degradation of Dutch wetland systems. Urban development, agricultural intensification, and water management practices have significantly reduced suitable habitat areas. Climate change may further impact the species through altered precipitation patterns and temperature regimes that affect both the spider and its prey species. The fragmentation of remaining wetland patches limits population connectivity and genetic exchange. Conservation efforts for this species remain limited, partly due to insufficient population data and the challenges of monitoring small arachnid populations. Protection of existing wetland habitats and restoration of degraded marsh systems represent the primary conservation approaches. The species' critically endangered status reflects the broader decline of specialized wetland fauna in the Netherlands, highlighting the urgent need for comprehensive habitat protection and restoration programs.

The staartstrekspin faces severe threats from wetland habitat loss due to urban development and agricultural expansion in the Netherlands. Water management practices and drainage of marshy areas have eliminated much of the species' suitable habitat. Climate change may further impact remaining populations through altered environmental conditions.

Key Facts

IUCN StatusCritically Endangered (CR)
GroupArachnids
03Habitat

Habitat & Distribution

This species inhabits wetland environments, particularly reed beds and marshy areas along waterways in the Netherlands. It requires stable aquatic vegetation where it can construct webs to capture flying insects.

04Threats

Threats

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IUCN Red List: Critically Endangered

The staartstrekspin faces severe threats from wetland habitat loss due to urban development and agricultural expansion in the Netherlands. Water management practices and drainage of marshy areas have eliminated much of the species' suitable habitat. Climate change may further impact remaining populations through altered environmental conditions.

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

06Range

Found in 7 Countries

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). staartstrekspin (Tetragnatha reimoseri). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/staartstrekspin

Full citation guide & data usage terms