Walckenaeria stylifrons
Local name: Flaches Zierköpfchen
Walckenaeria stylifrons, known as the Flat-headed Dwarf Spider, is a minute arachnid measuring only 1-2mm in length with a characteristically flattened cephalic region. This tiny linyphiid spider plays an important ecological role as both predator of even smaller invertebrates and prey for larger arthropods in specialized microhabitat communities.
11
Countries
Taxonomy & Classification
Kingdom
Animalia
Phylum
Arthropoda
Class
Arachnida
Order
Araneae
Family
Linyphiidae
Genus
Walckenaeria
Walckenaeria stylifrons belongs to the family Linyphiidae, order Araneae, within the Arachnida class.
Species Profile
Walckenaeria stylifrons, known as the Flat-headed Dwarf Spider, is a minute arachnid measuring only 1-2mm in length with a characteristically flattened cephalic region. This tiny linyphiid spider plays an important ecological role as both predator of even smaller invertebrates and prey for larger arthropods in specialized microhabitat communities.
Walckenaeria stylifrons faces severe population declines primarily due to habitat destruction and fragmentation of its specialized wetland environments. Agricultural intensification, urban development, and changes in water management practices have significantly reduced the availability of suitable microhabitats this small spider requires for survival.
Key Facts
Habitat & Distribution
This species inhabits the leaf litter layer and moss cushions of ancient deciduous forests, particularly favoring areas with high humidity and stable microclimatic conditions. It is typically found in undisturbed woodland floors with deep organic matter accumulation and minimal human disturbance.
Threats
IUCN Red List: Endangered
Walckenaeria stylifrons faces severe population declines primarily due to habitat destruction and fragmentation of its specialized wetland environments. Agricultural intensification, urban development, and changes in water management practices have significantly reduced the availability of suitable microhabitats this small spider requires for survival.
Agricultural intensification
Habitat loss and fragmentation
Climate change impacts on wetland hydrology
Urban development
Water management changes
Found in 11 Countries
Community Sightings
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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). Walckenaeria stylifrons (Walckenaeria stylifrons). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/flaches-zierkopfchen