''Savignia birostrum'' is a species of sheet weaver found in Russia (from the Urals to the Far East), China, and the United States (Alaska). It was first described by

Chamberlin The Chamberlin is an electro-mechanical keyboard instrument that was a precursor to the Mellotron. It was developed and patented by the American inventor Harry Chamberlin from 1949 to 1956, when the first model was introduced. There are several ...

& Ivie in 1947 as ''Cephalethus birostrum''. The specific name ''birostrum'' is a noun, so does not change with the gender of the genus name.

References

Linyphiidae Spiders described in 1947 Spiders of China Spiders of Russia Spiders of the United States {{Linyphiidae-stub