Atypus karschi
This record describes Atypus karschi (species). Recorded family: Atypidae. Recorded order: Araneae.
Identification and Appearance
Identification notes
Female with male.
Classification
Habitat and Range
Habitat
"In Pennsylvania this species is found in protected riparian woodlands, brushy woodlots and at least one mowed field, and is also reliably found in some suburban neighborhoods where webs are built at the base of shrubs or along walls and fences."
Geographic Range
Korea, China, Taiwan, Japan. Introduced in USA ; Chester, Delaware, Montgomery, and Philadelphia Counties in Pennsylvania
Additional species information
Species notes from the sources
Etymology: Dönitz, 1887
About Spiders: the wider group
Order-level background for Araneae, the group containing Atypus karschi. Species-specific details appear above.
Group overview
As of 2023, 51,673 spider species in 136 families have been recorded, though an estimated 150,000 species exist. Spiders rank 7th in total species diversity among all organism orders. Only 0.5% of spider species pose any risk to human health.
Ecological role of the group
Spider venom contains complex peptides with diverse pharmacological activities, making them valuable for drug development research. Spiders produce up to 7 types of silk from specialized glands. Spider silk genes have been inserted into mammals and plants for biotech applications.
Economic and practical significance of the group
The global spider community kills an estimated 400-800 million tons of prey annually (2017 study). Spiders provide billions of dollars in natural pest control for agriculture. Spider silk is 5× stronger than steel of the same diameter, driving a biomaterials research industry.
Recorded sources for this group: World Spider Catalog, PNAS, Nature, ScienceDirect. Imported estimates may describe particular regions or reporting periods.
Photos of Atypus karschi (5)
Photo credits: Contributed by Jeff Hollenbeck; Additional contributions by Lynette Elliott , jsloan , Laura P.