Atypus karschi
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 A. karschi
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| Atypus karschi (Dönitz, 1887) |
Atypus karschi is a mygalomorph spider that lives in Japan, China, and Taiwan. In Japan, it is known as ji-gumo.
These spiders are black or dark brown and range from 17mm to 20mm. Like other spiders in its infraorder, it has fangs that point straight down rather than crossing.
This spider has an unusual web. It spins a tube of silk that is hidden partially underground, with the portion above ground being covered in leaves and other debris. The spider waits for an insect to land or crawl onto the tube, then bites through the silk to pull the insect inside.
The name is derived from arachnologist Friedrich Karsch.
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