SaaristoaSaaristoa is a genus of sheet weavers that was first described by Alfred Frank Millidge in 1978.Speciesit contains five species, found in Europe, the United States, and Japan:Saaristoa abnormis – EuropeSaaristoa ebinoensis – JapanSaaristoa firma – EuropeSaaristoa nipponica – JapanSaaristoa sammamish – USA