Spirembolus

Spirembolus is a genus of North American sheet weavers that was first described by Ralph Vary Chamberlin in 1920.

Species
it contains forty-one species, found in Mexico, Canada, and the United States:
 * Spirembolus abnormis Millidge, 1980 – USA, Canada
 * Spirembolus approximatus (Chamberlin, 1949) – USA
 * Spirembolus bilobatus (Chamberlin & Ivie, 1945) – USA
 * Spirembolus cheronus Chamberlin, 1949 – USA
 * Spirembolus chilkatensis (Chamberlin & Ivie, 1947) – USA
 * Spirembolus demonologicus (Crosby, 1925) – USA
 * Spirembolus dispar Millidge, 1980 – USA
 * Spirembolus elevatus Millidge, 1980 – USA
 * Spirembolus erratus Millidge, 1980 – USA
 * Spirembolus falcatus Millidge, 1980 – USA
 * Spirembolus fasciatus (Banks, 1904) – USA
 * Spirembolus fuscus Millidge, 1980 – USA
 * Spirembolus hibernus Millidge, 1980 – USA
 * Spirembolus humilis Millidge, 1980 – USA
 * Spirembolus latebricola Millidge, 1980 – USA
 * Spirembolus levis Millidge, 1980 – USA, Mexico
 * Spirembolus maderus Chamberlin, 1949 – USA
 * Spirembolus mendax Millidge, 1980 – USA
 * Spirembolus mirus Millidge, 1980 – USA
 * Spirembolus monicus (Chamberlin, 1949) – USA
 * Spirembolus monticolens (Chamberlin, 1919) (type) – USA, Canada
 * Spirembolus montivagus Millidge, 1980 – USA
 * Spirembolus mundus Chamberlin & Ivie, 1933 – USA, Canada
 * Spirembolus novellus Millidge, 1980 – USA
 * Spirembolus oreinoides Chamberlin, 1949 – USA, Canada
 * Spirembolus pachygnathus Chamberlin & Ivie, 1935 – USA
 * Spirembolus pallidus Chamberlin & Ivie, 1935 – USA
 * Spirembolus perjucundus Crosby, 1925 – USA
 * Spirembolus phylax Chamberlin & Ivie, 1935 – USA
 * Spirembolus praelongus Millidge, 1980 – USA
 * Spirembolus prominens Millidge, 1980 – USA, Canada
 * Spirembolus proximus Millidge, 1980 – USA
 * Spirembolus pusillus Millidge, 1980 – USA
 * Spirembolus redondo (Chamberlin & Ivie, 1945) – USA
 * Spirembolus spirotubus (Banks, 1895) – USA, Canada
 * Spirembolus synopticus Crosby, 1925 – USA
 * Spirembolus tiogensis Millidge, 1980 – USA
 * Spirembolus tortuosus (Crosby, 1925) – USA
 * Spirembolus vallicolens Chamberlin, 1920 – USA
 * Spirembolus venustus Millidge, 1980 – USA
 * Spirembolus whitneyanus Chamberlin & Ivie, 1935 – USA