Williams, W. D. (1970) A revision of North American epigean species of Asellus (Crustacea: Isopoda). Smithsonian Contributions to Zoology No. 49: 1-79.[details]
(ofAsellus occidentalis Williams, 1970)Williams, W. D. (1970) A revision of North American epigean species of Asellus (Crustacea: Isopoda). Smithsonian Contributions to Zoology No. 49: 1-79.[details]
original descriptionWilliams, W. D. (1970) A revision of North American epigean species of Asellus (Crustacea: Isopoda). Smithsonian Contributions to Zoology No. 49: 1-79.[details]
original description(ofAsellus occidentalis Williams, 1970)Williams, W. D. (1970) A revision of North American epigean species of Asellus (Crustacea: Isopoda). Smithsonian Contributions to Zoology No. 49: 1-79.[details]
basis of recordSchotte, M., B.F. Kensley & S. Shilling. (1995 onwards). World list of Marine, Freshwater and Terrestrial Crustacea Isopoda. National Museum of Natural History Smithsonian Institution: Washington D.C., USA - no longer online. [website archived on 2018-01-25].[details]
Present Inaccurate Introduced: alien Containing type locality