WoRMS taxon details
Trididemnum opacum (Ritter, 1907)
251518 (urn:lsid:marinespecies.org:taxname:251518)
accepted
Species
Didemnum opacum Ritter, 1907 · unaccepted (original combination)
Trididemnum dellavallei Ritter & Forsyth, 1917 · unaccepted (original combination)
Trididemnum dellavalley Ritter & Forsyth, 1917 · unaccepted (literature misspelling)
marine, fresh, terrestrial
(of Didemnum opacum Ritter, 1907) Ritter, W. E. (1907). The ascidians collected by the United States Fisheries Bureau steamer Albatross on the coast of California during the summer of 1904. <em>Univ. Calif. Publ. Zool.</em> 4:1-52. [details]
Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira da Rocha, R.; Swalla, B.J.; Turon, X. (2025). Ascidiacea World Database. Trididemnum opacum (Ritter, 1907). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=251518 on 2025-05-13
Date
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Nomenclature
original description
(of Didemnum opacum Ritter, 1907) Ritter, W. E. (1907). The ascidians collected by the United States Fisheries Bureau steamer Albatross on the coast of California during the summer of 1904. <em>Univ. Calif. Publ. Zool.</em> 4:1-52. [details]
original description (of Trididemnum dellavallei Ritter & Forsyth, 1917) Ritter, W. E.; Forsyth, R. H. (1917). Ascidian of the littoral zone of southern California. <em>Univ. California Publ., Zool.</em> 16: 439-512. [details]
basis of record Van Name, W. G. (1945). The North and South American ascidians. <em>Bull. Amer. Mus. Nat. Hist.</em> 84: 1-476., available online at http://digitallibrary.amnh.org/dspace/handle/2246/1186 [details]
original description (of Trididemnum dellavallei Ritter & Forsyth, 1917) Ritter, W. E.; Forsyth, R. H. (1917). Ascidian of the littoral zone of southern California. <em>Univ. California Publ., Zool.</em> 16: 439-512. [details]
basis of record Van Name, W. G. (1945). The North and South American ascidians. <em>Bull. Amer. Mus. Nat. Hist.</em> 84: 1-476., available online at http://digitallibrary.amnh.org/dspace/handle/2246/1186 [details]
Other
additional source
van der Land, J. (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO). , available online at http://www.marinespecies.org/urmo/ [details]





From editor or global species database
Genetic nomenclature abbreviation Tropac [details]
To Biodiversity Heritage Library (11 publications)
To Biodiversity Heritage Library (3 publications) (from synonym Didemnum opacum Ritter, 1907)
To USNM Invertebrate Zoology Chordata Collection (1 record) (from synonym Didemnum opacum Ritter, 1907)
To USNM Invertebrate Zoology Chordata Collection (3 records)
To ITIS
To Biodiversity Heritage Library (3 publications) (from synonym Didemnum opacum Ritter, 1907)
To USNM Invertebrate Zoology Chordata Collection (1 record) (from synonym Didemnum opacum Ritter, 1907)
To USNM Invertebrate Zoology Chordata Collection (3 records)
To ITIS