brun knotterspindel
Crustulina sticta
Crustulina sticta is a species of cobweb spider in the family Theridiidae. It is found in North America, Europe, Turkey, Caucasus, a range from Russia, Kazakhstan, China, Korea, and Japan.
21
Countries
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Crustulina_sticta
Taxonomy & Classification
Kingdom
Animalia
Phylum
Arthropoda
Class
Arachnida
Order
Araneae
Family
Theridiidae
Genus
Crustulina
brun knotterspindel belongs to the family Theridiidae, order Araneae, within the Arachnida class.
Species Profile
Crustulina sticta is a species of cobweb spider in the family Theridiidae. It is found in North America, Europe, Turkey, Caucasus, a range from Russia, Kazakhstan, China, Korea, and Japan.
Crustulina sticta, the brun knotterspindel, faces severe population decline primarily due to habitat loss and fragmentation of its specialized woodland environments. The species' extremely limited distribution and small population size make it particularly vulnerable to environmental changes and human disturbance. Climate change and altered forest management practices further threaten the specific microhabitat conditions this spider requires for survival.
Key Facts
Threats
IUCN Red List: Critically Endangered
Crustulina sticta, the brun knotterspindel, faces severe population decline primarily due to habitat loss and fragmentation of its specialized woodland environments. The species' extremely limited distribution and small population size make it particularly vulnerable to environmental changes and human disturbance. Climate change and altered forest management practices further threaten the specific microhabitat conditions this spider requires for survival.
Climate change impacts on microhabitat
Habitat loss and fragmentation
Small population size and restricted range
Altered forest management practices
Human disturbance and development pressure
Found in 21 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). brun knotterspindel (Crustulina sticta). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/brun-knotterspindel