in all seasons
Atypus karschi (Atypidae) [Japanese name : ji-gumo]
When you find a sac that is attached to the base of stone walls, paving
stones, trees of an old house, a Buddhist temple, or a Shinto shrine, that is
the home of A.karschi.
The sac is elongated and varies in length, from about 10 or more in
centimeters length to shorter ones, and from about 1 cm in diameter to thinner
ones.
When an insect touches the sac, the spider dashes out from the sac, catches it and takes its
prey into the sac.
The length is 17-20 mm.
It is found throughout Japan.
