Isopoda taxon details
Trichoniscus pusillus Brandt, 1833
263752 (urn:lsid:marinespecies.org:taxname:263752)
accepted
Species
Itea laevis Zaddach, 1844 · unaccepted > junior subjective synonym
Philougria celer Kinahan, 1857 · unaccepted > junior subjective synonym
Philougria riparia Kinahan, 1858 · unaccepted > junior subjective synonym
Trichoniscus (Spiloniscus) elizabethae Herold, 1923 · unaccepted > junior subjective synonym
Trichoniscus (Spiloniscus) elizabethae mut. alba Verhoeff, 1938 · unaccepted > unavailable name (infrasubspecific)
Trichoniscus (Spiloniscus) elizabethae mut. pallida Vandel, 1938 · unaccepted > unavailable name (infrasubspecific)
Trichoniscus (Spiloniscus) rhenanus Gräve, 1913 · unaccepted
Trichoniscus caelebs Verhoeff, 1917 · unaccepted > junior subjective synonym
Trichoniscus elisabethae Herold, 1923 · unaccepted > junior subjective synonym
Trichoniscus pusillus calaebs Verhoeff, 1917 · unaccepted > junior subjective synonym
Trichoniscus pusillus pusillus Brandt, 1833 · unaccepted > superseded rank
Trichoniscus rhenanus Gräve, 1913 · unaccepted > junior subjective synonym
- Subspecies Trichoniscus pusillus alticola Legrand, Strouhal & Vandel, 1950 accepted as Trichoniscus alticola Legrand, Strouhal & Vandel, 1950 (unaccepted > junior subjective synonym)
- Subspecies Trichoniscus pusillus baschierii Brian, 1953 accepted as Trichoniscus baschierii Brian, 1953 (unaccepted > superseded rank)
- Subspecies Trichoniscus pusillus calaebs Verhoeff, 1917 accepted as Trichoniscus pusillus Brandt, 1833 (unaccepted > junior subjective synonym)
- Subspecies Trichoniscus pusillus noricus Verhoeff, 1917 accepted as Trichoniscus noricus Verhoeff, 1917 represented as Trichoniscus noricus noricus Verhoeff, 1917 (unaccepted > superseded rank)
- Subspecies Trichoniscus pusillus provisorius Racovitza, 1908 accepted as Trichoniscus provisorius Racovitza, 1908 (unaccepted > superseded rank)
- Subspecies Trichoniscus pusillus pusillus Brandt, 1833 accepted as Trichoniscus pusillus Brandt, 1833 (unaccepted > superseded rank)
- Subspecies Trichoniscus pusillus sujensis Brian, 1926 accepted as Trichoniscus sujensis Brian, 1927 (unaccepted > superseded rank)
- Variety Trichoniscus pusillus var. batavus Weber, 1881 accepted as Trichoniscus batavus Weber, 1881 (unaccepted > superseded rank)
- Variety Trichoniscus pusillus var. pygmaeus G. O. Sars, 1898 accepted as Trichoniscus pygmaeus G. O. Sars, 1898 (unaccepted > superseded rank)
recent only
Brandt, J. F. (1833). Conspectus monographiae crustaceorum oniscodorum Latreillii. <em>Bulletin de la Société Impériale des Naturalistes de Moscou.</em> 6: 171-193, pl. 4., available online at https://www.biodiversitylibrary.org/page/45989307 [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. Trichoniscus pusillus Brandt, 1833. Accessed at: https://www.marinespecies.org/isopoda/aphia.php?p=taxdetails&id=263752 on 2026-09-10
original description
Brandt, J. F. (1833). Conspectus monographiae crustaceorum oniscodorum Latreillii. <em>Bulletin de la Société Impériale des Naturalistes de Moscou.</em> 6: 171-193, pl. 4., available online at https://www.biodiversitylibrary.org/page/45989307 [details]
original description (of Trichoniscus (Spiloniscus) rhenanus Gräve, 1913) Gräve, W. (1913). Die in der Umgebung von Bonn vorkommenden landbewohnenden Crustaceen und einiges über deren Lebensverhältnisse. <em>Verhandlungen des Naturhistorischen Vereins der Preufsischen Rheinlande und Westfalens.</em> 70: 175-248. [details]
original description (of Trichoniscus elisabethae Herold, 1923) Herold, W. (1923). Über zwei norddeutsche <i>Trichoniscus</i>-Männchen der <i>pusillus</i>-Gruppe und den Artbegriff <i>Trichoniscus pusillus</i> (Brdt,. B. L.) Sars. <em>Zoologischer Anzeiger.</em> 57(9-13): 268-273. [details]
original description (of Philougria celer Kinahan, 1857) Kinahan, J. R. (1857). Analysis of certain allied genera of terrestrial Isopoda; with description of a new genus and a detailed list of the British species of <i>Ligia</i>, <i>Philougria</i>, <i>Philoscia</i>, <i>Porcellio</i>, <i>Oniscus</i> and <i>Armadillidium</i>. <em>The Natural History Review.</em> 4(Proceedings of Societies): 258-282, 302-305, pls. 19-22. [details]
original description (of Philougria riparia Kinahan, 1858) Kinahan, J. R. (1858). On the genera <i>Philoscia</i> (Latreille); <i>Itea</i> (Koch); <i>Philougria</i> (Kinahan); comprising descriptions of new British species. <em>The Natural History Review.</em> 5(Proceedings of Societies): 194-200, pl. 23. [details]
original description (of Trichoniscus (Spiloniscus) elizabethae mut. alba Verhoeff, 1938) Vandel, A. (1938). Contribution a la génétique des isopodes du genre <i>Trichoniscus</i>. I. Les mutations <i>alba</i> et <i>pallida</i> de <i>Trichoniscus</i> (<i>Spiloniscus elizabethae</i> Herold) et l'origine des forms cavernicoles. <em>Bulletin Biologique de la France et de la Belgique.</em> 72(2): 121-146. [details] Available for editors
original description (of Trichoniscus (Spiloniscus) elizabethae mut. pallida Vandel, 1938) Vandel, A. (1938). Contribution a la génétique des isopodes du genre <i>Trichoniscus</i>. I. Les mutations <i>alba</i> et <i>pallida</i> de <i>Trichoniscus</i> (<i>Spiloniscus elizabethae</i> Herold) et l'origine des forms cavernicoles. <em>Bulletin Biologique de la France et de la Belgique.</em> 72(2): 121-146. [details] Available for editors
original description (of Trichoniscus pusillus calaebs Verhoeff, 1917) Verhoeff, K. W. (1917). Zur Kenntnis der Gattungen <i>Trichoniscus</i> und <i>Mesoniscus</i> (Über Isopoden, 19. Aufsatz.). <em>Zoologischer Anzeiger.</em> 49(2): 40-57. [details]
original description (of Itea laevis Zaddach, 1844) Zaddach, E. G. (1844). Synopseos Crustaceorum Prussicorum Prodromus. [Synopsis of Prussian Crustaceans Prodromus.]. <em>Dissertatio Zoologica, quam Scripsit et ex Auctoritate Amplissimi Phiposophorum Ordinis in Academia Albertina pro Facultate Docendi [Zoological Dissertation, which he Wrote with the Authority of the Ample Phiposophore Order in the Albertine Academy for the Faculty of Teaching] , Regiomonti: E.J. Daljowski.</em> viii + 39 pp., available online at https://biodiversitylibrary.org/page/11825149 [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]
additional source Schmalfuss, H. (2003). World catalog of terrestrial isopods (Isopoda: Oniscidea). <em>Stuttgarter Beiträge zur Naturkunde Serie A (Biologie).</em> 654: 1-341., available online at https://www.biodiversitylibrary.org/page/60882444 [details] Available for editors
original description (of Trichoniscus (Spiloniscus) rhenanus Gräve, 1913) Gräve, W. (1913). Die in der Umgebung von Bonn vorkommenden landbewohnenden Crustaceen und einiges über deren Lebensverhältnisse. <em>Verhandlungen des Naturhistorischen Vereins der Preufsischen Rheinlande und Westfalens.</em> 70: 175-248. [details]
original description (of Trichoniscus elisabethae Herold, 1923) Herold, W. (1923). Über zwei norddeutsche <i>Trichoniscus</i>-Männchen der <i>pusillus</i>-Gruppe und den Artbegriff <i>Trichoniscus pusillus</i> (Brdt,. B. L.) Sars. <em>Zoologischer Anzeiger.</em> 57(9-13): 268-273. [details]
original description (of Philougria celer Kinahan, 1857) Kinahan, J. R. (1857). Analysis of certain allied genera of terrestrial Isopoda; with description of a new genus and a detailed list of the British species of <i>Ligia</i>, <i>Philougria</i>, <i>Philoscia</i>, <i>Porcellio</i>, <i>Oniscus</i> and <i>Armadillidium</i>. <em>The Natural History Review.</em> 4(Proceedings of Societies): 258-282, 302-305, pls. 19-22. [details]
original description (of Philougria riparia Kinahan, 1858) Kinahan, J. R. (1858). On the genera <i>Philoscia</i> (Latreille); <i>Itea</i> (Koch); <i>Philougria</i> (Kinahan); comprising descriptions of new British species. <em>The Natural History Review.</em> 5(Proceedings of Societies): 194-200, pl. 23. [details]
original description (of Trichoniscus (Spiloniscus) elizabethae mut. alba Verhoeff, 1938) Vandel, A. (1938). Contribution a la génétique des isopodes du genre <i>Trichoniscus</i>. I. Les mutations <i>alba</i> et <i>pallida</i> de <i>Trichoniscus</i> (<i>Spiloniscus elizabethae</i> Herold) et l'origine des forms cavernicoles. <em>Bulletin Biologique de la France et de la Belgique.</em> 72(2): 121-146. [details] Available for editors
original description (of Trichoniscus (Spiloniscus) elizabethae mut. pallida Vandel, 1938) Vandel, A. (1938). Contribution a la génétique des isopodes du genre <i>Trichoniscus</i>. I. Les mutations <i>alba</i> et <i>pallida</i> de <i>Trichoniscus</i> (<i>Spiloniscus elizabethae</i> Herold) et l'origine des forms cavernicoles. <em>Bulletin Biologique de la France et de la Belgique.</em> 72(2): 121-146. [details] Available for editors
original description (of Trichoniscus pusillus calaebs Verhoeff, 1917) Verhoeff, K. W. (1917). Zur Kenntnis der Gattungen <i>Trichoniscus</i> und <i>Mesoniscus</i> (Über Isopoden, 19. Aufsatz.). <em>Zoologischer Anzeiger.</em> 49(2): 40-57. [details]
original description (of Itea laevis Zaddach, 1844) Zaddach, E. G. (1844). Synopseos Crustaceorum Prussicorum Prodromus. [Synopsis of Prussian Crustaceans Prodromus.]. <em>Dissertatio Zoologica, quam Scripsit et ex Auctoritate Amplissimi Phiposophorum Ordinis in Academia Albertina pro Facultate Docendi [Zoological Dissertation, which he Wrote with the Authority of the Ample Phiposophore Order in the Albertine Academy for the Faculty of Teaching] , Regiomonti: E.J. Daljowski.</em> viii + 39 pp., available online at https://biodiversitylibrary.org/page/11825149 [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]
additional source Schmalfuss, H. (2003). World catalog of terrestrial isopods (Isopoda: Oniscidea). <em>Stuttgarter Beiträge zur Naturkunde Serie A (Biologie).</em> 654: 1-341., available online at https://www.biodiversitylibrary.org/page/60882444 [details] Available for editors
Present Inaccurate Introduced: alien Containing type locality
| Language | Name | |
|---|---|---|
| Danish | rød dværgbænkebider | [details] |
| Dutch | paars drieoogje | [details] |
| English | common pygmy woodlouse | [details] |
To Barcode of Life (106 barcodes)
To Biodiversity Heritage Library (1 publication) (from synonym Trichoniscus elisabethae Herold, 1923)
To Biodiversity Heritage Library (1 publication) (from synonym Trichoniscus rhenanus Gräve, 1913)
To Biodiversity Heritage Library (101 publications)
To Biodiversity Heritage Library (2 publications) (from synonym Trichoniscus pusillus pusillus Brandt, 1833)
To European Nucleotide Archive, ENA (Trichoniscus pusillus pusillus) (from synonym Trichoniscus pusillus pusillus Brandt, 1833)
To European Nucleotide Archive, ENA (Trichoniscus pusillus)
To GenBank (7 nucleotides; 4 proteins) (from synonym Trichoniscus pusillus pusillus Brandt, 1833)
To GenBank (84 nucleotides; 78 proteins)
To NHMUK collection (Trichoniscus pusillus Brandt, 1833; NON-TYPE; NHMUK:ecatalogue:9528628)
To NMNH Extant Collection (IZ CRT 139061 Trichoniscus pusillus dorsal 12x photo)
To NMNH Extant Collection (IZ CRT 236470 Trichoniscus pusillus dorsal 12x photo)
To PESI
To USNM Invertebrate Zoology Arthropoda Collection (3 records) (from synonym Trichoniscus pusillus pusillus Brandt, 1833)
To USNM Invertebrate Zoology Arthropoda Collection (40 records)
To ITIS
To Biodiversity Heritage Library (1 publication) (from synonym Trichoniscus elisabethae Herold, 1923)
To Biodiversity Heritage Library (1 publication) (from synonym Trichoniscus rhenanus Gräve, 1913)
To Biodiversity Heritage Library (101 publications)
To Biodiversity Heritage Library (2 publications) (from synonym Trichoniscus pusillus pusillus Brandt, 1833)
To European Nucleotide Archive, ENA (Trichoniscus pusillus pusillus) (from synonym Trichoniscus pusillus pusillus Brandt, 1833)
To European Nucleotide Archive, ENA (Trichoniscus pusillus)
To GenBank (7 nucleotides; 4 proteins) (from synonym Trichoniscus pusillus pusillus Brandt, 1833)
To GenBank (84 nucleotides; 78 proteins)
To NHMUK collection (Trichoniscus pusillus Brandt, 1833; NON-TYPE; NHMUK:ecatalogue:9528628)
To NMNH Extant Collection (IZ CRT 139061 Trichoniscus pusillus dorsal 12x photo)
To NMNH Extant Collection (IZ CRT 236470 Trichoniscus pusillus dorsal 12x photo)
To PESI
To USNM Invertebrate Zoology Arthropoda Collection (3 records) (from synonym Trichoniscus pusillus pusillus Brandt, 1833)
To USNM Invertebrate Zoology Arthropoda Collection (40 records)
To ITIS
From editor or global species database
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