Range of Pristiloma crateris Pilsbry, 1946 (Gastropoda: Pulmonata: Pristilomatidae) in the United States Pacific Northwest

Abstract

Extensive holdings of Pristiloma snails in the Oregon State Arthropod Collection were evaluated and reidentified as necessary. The study confirmed the distinctness of Pristiloma crateris from other species and delineated a range in Pacific Northwest National Forests, primarily along the western and eastern slopes of the Cascade Range in Oregon.