The long legged sac spiders (family Miturgidae) incude nearly 400 species in about 30 genera worldwide. However the largest genus currently recognized as belonging to this family is the Cheiracanthium, which used to be placed in the family of "true" sac spider Clubionidae. This spider is quite big with a body length of over 1cm apart from its long legs. This spider is nocturnal species with a large range, covering the Mediterranean region, souther Europe and introduced and established in north America.
This spider is know to construct a nesting tube (the sac) in a rolled leaf or blade of grass. This spider has a middy venomous bite.
Ref: ISBN: 978-99957-33-27-8