WoRMS taxon details
Caecidotea occidentalis (Williams, 1970)
259572 (urn:lsid:marinespecies.org:taxname:259572)
accepted
Species
Asellus occidentalis Williams, 1970 · unaccepted (basionym)
recent only
Williams, W. D. (1970) A revision of North American epigean species of Asellus (Crustacea: Isopoda). Smithsonian Contributions to Zoology No. 49: 1-79. [details]
(of Asellus 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]
(of Asellus 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]
Note Oregon, USA
From editor or global species database
type locality Oregon, USA [details]
Boyko, C.B.; Campos-Filho, I.S.; Hadfield, K.A.; Hughes, T.; Merrin, K.L.; Ota, Y.; Poore, G.C.B. (Eds) (2025). World Marine, Freshwater and Terrestrial Isopod Crustaceans database. Caecidotea occidentalis (Williams, 1970). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=259572 on 2025-10-12
Date
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Nomenclature
original description
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 description (of Asellus 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 record Schotte, 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]
original description (of Asellus 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 record Schotte, 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 Present in aphia/obis/gbif/idigbio Inaccurate Introduced: alien Containing type locality
To Biodiversity Heritage Library (1 publication)
To Biodiversity Heritage Library (4 publications) (from synonym Asellus occidentalis Williams, 1970)
To USNM Invertebrate Zoology Arthropoda Collection (2 records) (from synonym Asellus occidentalis Williams, 1970)
To USNM Invertebrate Zoology Arthropoda Collection (3 records)
To USNM Invertebrate Zoology Arthropoda Collection (Holotype USNM 122063) (from synonym Asellus occidentalis Williams, 1970)
To ITIS
To Biodiversity Heritage Library (4 publications) (from synonym Asellus occidentalis Williams, 1970)
To USNM Invertebrate Zoology Arthropoda Collection (2 records) (from synonym Asellus occidentalis Williams, 1970)
To USNM Invertebrate Zoology Arthropoda Collection (3 records)
To USNM Invertebrate Zoology Arthropoda Collection (Holotype USNM 122063) (from synonym Asellus occidentalis Williams, 1970)
To ITIS
