WoRMS taxon details
Leptomesochra attenuata (Scott A., 1896)
157700 (urn:lsid:marinespecies.org:taxname:157700)
accepted
Species
Interleptomesochra attenuata (Scott A., 1896) · unaccepted (Interleptomesochra Lang, 1965 is...)
Interleptomesochra Lang, 1965 is a junior subjective synonym of Leptomesochra Sars G.O., 1911
Normanella attenuata Scott A., 1896 · unaccepted
marine, brackish, fresh, terrestrial
(of Normanella attenuata Scott A., 1896) Scott, A. (1896). Description of new and rare Copepoda. <em>Report on the Investigations carried on in 1895 in connection with the Lancashire Sea-Fisheries Laboratory at University College, Liverpool, Proceedings and Transactions of the Liverpool Biological Society.</em> 10:134-158, pls. 1-5., available online at https://www.biodiversitylibrary.org/page/41380930
page(s): 149 [details]
page(s): 149 [details]
Taxonomic remark a) Leptomesochra nichollsi Noodt, 1955 is the replacement name for Leptomesochra attenuata (Nicholls, 1939), but it is no...
Taxonomic remark 1) According to Huys (2009), Sars (1911) proposed Leptomesochra for Mesochra macintoshi Scott & Scott, 1895, Normanella...
Distribution lower St. Lawrence estuary
Taxonomic remark a) Leptomesochra nichollsi Noodt, 1955 is the replacement name for Leptomesochra attenuata (Nicholls, 1939), but it is no longer in use and was rejected, and Leptameira attenuata Nicholls, 1939 is to be considered the valid name for the species it denotes. But since Huys (2009) made available Lang's genus name Leptameira as an intentionally new name, Leptameira attenuata Nicholls, 1939 should be accepted as Leptameira attenuata (Nicholls, 1939) and both do not enter into synonymy.
b) Interleptomesochra Lang 1965 is a junior subjective synonym of Leptomesochra Sars, 1911. Then, Interleptomesochra attenuata (Scott A., 1896) of Lang's (1965) Interleptomesochra, is a junior subjective synonym of Normanella attenuata Scott A., 1896 of Sars' (1911) Leptomesochra. Then, Normanella attenuata Scott A., 1896 should be accepted as Interleptomesochra attenuata (Scott A., 1896) which in turn should be accepted as Leptomesochra attenuata (Scott A., 1896).
[details]
b) Interleptomesochra Lang 1965 is a junior subjective synonym of Leptomesochra Sars, 1911. Then, Interleptomesochra attenuata (Scott A., 1896) of Lang's (1965) Interleptomesochra, is a junior subjective synonym of Normanella attenuata Scott A., 1896 of Sars' (1911) Leptomesochra. Then, Normanella attenuata Scott A., 1896 should be accepted as Interleptomesochra attenuata (Scott A., 1896) which in turn should be accepted as Leptomesochra attenuata (Scott A., 1896).
[details]
Taxonomic remark 1) According to Huys (2009), Sars (1911) proposed Leptomesochra for Mesochra macintoshi Scott & Scott, 1895, Normanella...
Taxonomic remark 1) According to Huys (2009), Sars (1911) proposed Leptomesochra for Mesochra macintoshi Scott & Scott, 1895, Normanella attenuata Scott A., 1896, Leptomesochra tenuicornis Sars, 1911, and Leptomesochra confluens Sars, 1911; but he did not fix the type species, rendering the genus name Leptomesochra unavailable.
2) Lang (1936) proposed the genus name Leptameira with Leptomesochra confluens as the type species, but did not include a diagnosis for Leptameira, rendering the genus name unavailable. Later, Nicholls (1939) added Leptameira attenuata Nicholls, 1939, and gave the diagnostic features to differentiate Leptameira, but he failed in fixing the type species, rendering the genus name unavailable one more time.
3) Lang (1944) relegated Leptameira to a junior subjective synonym of Leptomesochra, but the designation of Mesochra macintoshi as the type species of Leptomesochra was also invalid, rendering the genus name Leptomesochra unavailable again.
4) It was Vervoort (1964) who validly fixed Normanella attenuata Scott A., 1896 as the type species, and included Leptomesochra nasuta Sewell, 1940, Leptomesochra africana Kunz, 1951, Leptomesochra eulitoralis Noodt, 1952, Leptomseochra elongata Bozic, 1955, Leptomesochra pygmaea Vervoort, 1964 and Leptomesochra nichollsi Noodt, 1955, the latter is a substitute name of Leptomesochra attenuata (Nicholls, 1939), a secondary homonym of Leptomesochra attenuata (Scott A., 1896).
5) Lang (1965) revised the genus Leptomesochra and divided it into three genera:
- Praeleptomesochra Lang, 1965 (L. africana as the type species, plus Praeleptomesochra similis Lang, 1965, and Leptomesochra pygmaea),
- Leptomesochra Sars, 1911 (Mesochra macintoshi, Leptomesochra nasuta, Leptomesochra confluens, Leptomesochra infima, and Leptameira attenuata Nicholls, 1939),
- Interleptomesochra Lang, 1965 (L. tenicornis as the type species, plus Normanella attenuata Scott A., 1896, Leptomesochra tenuicornis, Leptomesochra elongata, Leptomesochra eulitoralis and Interleptomesochra reducta Lang, 1965)
Interleptomesochra Lang, 1965 became a junior subjective synonym of Leptomesochra Sars, 1911, because Sars (1911) concept of Leptomesochra and Lang's (1965) concept of Interleptomesochra contains Normanella attenuata Scot A., 1896, and the generic concept of Leptomesochra Sars, 1911 coincides with Lang's (1965) diagnosis of Interleoptomesochra.
Two other species were originally added to Interleptomesochra Lang, 1965, Interleptomesochra noodti Galhano, 1968, and Interleptomesochra boguensis Lindgren, 1975. Since Interleptomesochra Lang, 1965 is a junior synonym of Leptomesochra Sars, 1911, these two species became Leptomesochra noodti (Galhano, 1968) and Leptomesochra boguensis (Lindgren, 1975). Then, Leptomesochra (with Mesochra macintoshi, Leptomesochra nasuta, Leptomesochra confluens, Leptomesochra infima, and Leptameira attenuata Nicholls, 1939), became orphaned because its type species, Normanella attenuata Scott A., 1896, was left in Interleptomesochra.
Huys (2009) made available Lang's (1936) Leptameira with Leptomesochra confluens Sars, 1911 as the type species, and included Mesochra macintoshi Scott & Scott, 1895b = Leptameira macintoshi (Scott & Scott, 1895b) comb. nov., Leptomesochra confluens Sars, 1911c = Leptameira confluens (Sars, 1911c) comb. nov., Leptomesochra infima Monard, 1928 = Leptameira infima (Monard, 1928) comb. nov., Leptameira attenuata Nicholls, 1939a = Leptameira attenuata (Nicholls, 1939a) comb. nov.; Leptomesochra nasuta Sewell, 1940 = Leptameira nasuta (Sewell, 1940) comb. nov., Leptomesochra hirsuta Wiborg, 1964 = Leptameira hirsuta (Wiborg, 1964) comb. nov., Leptomesochra theodoridis Soyer, 1966 = Leptameira theodoridis (Soyer, 1966) comb. nov., Leptomesochra eremeensis Kornev & Chertoprud, 2008 = Leptameira eremeensis (Kornev & Chertoprud, 2008) comb. nov., and Leptomesochra kunzi Kornev & Chertoprud, 2008 = Leptameira kunzi (Kornev & Chertoprud, 2008) comb. nov.
[details]
2) Lang (1936) proposed the genus name Leptameira with Leptomesochra confluens as the type species, but did not include a diagnosis for Leptameira, rendering the genus name unavailable. Later, Nicholls (1939) added Leptameira attenuata Nicholls, 1939, and gave the diagnostic features to differentiate Leptameira, but he failed in fixing the type species, rendering the genus name unavailable one more time.
3) Lang (1944) relegated Leptameira to a junior subjective synonym of Leptomesochra, but the designation of Mesochra macintoshi as the type species of Leptomesochra was also invalid, rendering the genus name Leptomesochra unavailable again.
4) It was Vervoort (1964) who validly fixed Normanella attenuata Scott A., 1896 as the type species, and included Leptomesochra nasuta Sewell, 1940, Leptomesochra africana Kunz, 1951, Leptomesochra eulitoralis Noodt, 1952, Leptomseochra elongata Bozic, 1955, Leptomesochra pygmaea Vervoort, 1964 and Leptomesochra nichollsi Noodt, 1955, the latter is a substitute name of Leptomesochra attenuata (Nicholls, 1939), a secondary homonym of Leptomesochra attenuata (Scott A., 1896).
5) Lang (1965) revised the genus Leptomesochra and divided it into three genera:
- Praeleptomesochra Lang, 1965 (L. africana as the type species, plus Praeleptomesochra similis Lang, 1965, and Leptomesochra pygmaea),
- Leptomesochra Sars, 1911 (Mesochra macintoshi, Leptomesochra nasuta, Leptomesochra confluens, Leptomesochra infima, and Leptameira attenuata Nicholls, 1939),
- Interleptomesochra Lang, 1965 (L. tenicornis as the type species, plus Normanella attenuata Scott A., 1896, Leptomesochra tenuicornis, Leptomesochra elongata, Leptomesochra eulitoralis and Interleptomesochra reducta Lang, 1965)
Interleptomesochra Lang, 1965 became a junior subjective synonym of Leptomesochra Sars, 1911, because Sars (1911) concept of Leptomesochra and Lang's (1965) concept of Interleptomesochra contains Normanella attenuata Scot A., 1896, and the generic concept of Leptomesochra Sars, 1911 coincides with Lang's (1965) diagnosis of Interleoptomesochra.
Two other species were originally added to Interleptomesochra Lang, 1965, Interleptomesochra noodti Galhano, 1968, and Interleptomesochra boguensis Lindgren, 1975. Since Interleptomesochra Lang, 1965 is a junior synonym of Leptomesochra Sars, 1911, these two species became Leptomesochra noodti (Galhano, 1968) and Leptomesochra boguensis (Lindgren, 1975). Then, Leptomesochra (with Mesochra macintoshi, Leptomesochra nasuta, Leptomesochra confluens, Leptomesochra infima, and Leptameira attenuata Nicholls, 1939), became orphaned because its type species, Normanella attenuata Scott A., 1896, was left in Interleptomesochra.
Huys (2009) made available Lang's (1936) Leptameira with Leptomesochra confluens Sars, 1911 as the type species, and included Mesochra macintoshi Scott & Scott, 1895b = Leptameira macintoshi (Scott & Scott, 1895b) comb. nov., Leptomesochra confluens Sars, 1911c = Leptameira confluens (Sars, 1911c) comb. nov., Leptomesochra infima Monard, 1928 = Leptameira infima (Monard, 1928) comb. nov., Leptameira attenuata Nicholls, 1939a = Leptameira attenuata (Nicholls, 1939a) comb. nov.; Leptomesochra nasuta Sewell, 1940 = Leptameira nasuta (Sewell, 1940) comb. nov., Leptomesochra hirsuta Wiborg, 1964 = Leptameira hirsuta (Wiborg, 1964) comb. nov., Leptomesochra theodoridis Soyer, 1966 = Leptameira theodoridis (Soyer, 1966) comb. nov., Leptomesochra eremeensis Kornev & Chertoprud, 2008 = Leptameira eremeensis (Kornev & Chertoprud, 2008) comb. nov., and Leptomesochra kunzi Kornev & Chertoprud, 2008 = Leptameira kunzi (Kornev & Chertoprud, 2008) comb. nov.
[details]
Distribution lower St. Lawrence estuary
Distribution lower St. Lawrence estuary [details]
Walter, T.C.; Boxshall, G. (2025). World of Copepods Database. Leptomesochra attenuata (Scott A., 1896). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=157700 on 2025-05-04
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Nomenclature
original description
(of Normanella attenuata Scott A., 1896) Scott, A. (1896). Description of new and rare Copepoda. <em>Report on the Investigations carried on in 1895 in connection with the Lancashire Sea-Fisheries Laboratory at University College, Liverpool, Proceedings and Transactions of the Liverpool Biological Society.</em> 10:134-158, pls. 1-5., available online at https://www.biodiversitylibrary.org/page/41380930
page(s): 149 [details]
basis of record Brunel, P., L. Bosse & G. Lamarche. (1998). Catalogue of the marine invertebrates of the estuary and Gulf of St. Lawrence. <em>Canadian Special Publication of Fisheries and Aquatic Sciences, 126.</em> 405 pp. (look up in IMIS) [details] Available for editors
[request]
page(s): 149 [details]
basis of record Brunel, P., L. Bosse & G. Lamarche. (1998). Catalogue of the marine invertebrates of the estuary and Gulf of St. Lawrence. <em>Canadian Special Publication of Fisheries and Aquatic Sciences, 126.</em> 405 pp. (look up in IMIS) [details] Available for editors
[request]Other
additional source
Nicholls, A.G. (1939). Marine harpacticoids and cyclopoids from the shores of the St. Lawrence. <em>Le Naturaliste Canadien, Quebec.</em> 66(2):241-316, 28 figs. [details] Available for editors [request]
additional source Nicholls, A.G. (1940). Marine Harpacticoids and Cyclopoids from the Shores of the St. Lawrence. <em>Station Biologique du Saint-Laurent, Fauna et Flora Laurentianae.</em> 2: 1-19. [details]
additional source Integrated Taxonomic Information System (ITIS). , available online at http://www.itis.gov [details]
additional source Sars, G.O. (1911). Copepoda Harpacticoida. Parts XXXIII & XXXIV. Supplement (continued). <em>An Account of the Crustacea of Norway, with short descriptions and figures of all the species. Bergen Museum, Bergen.</em> 5:397-420, suppl. pls. 27-42. [details]
[request]additional source Nicholls, A.G. (1940). Marine Harpacticoids and Cyclopoids from the Shores of the St. Lawrence. <em>Station Biologique du Saint-Laurent, Fauna et Flora Laurentianae.</em> 2: 1-19. [details]
additional source Integrated Taxonomic Information System (ITIS). , available online at http://www.itis.gov [details]
additional source Sars, G.O. (1911). Copepoda Harpacticoida. Parts XXXIII & XXXIV. Supplement (continued). <em>An Account of the Crustacea of Norway, with short descriptions and figures of all the species. Bergen Museum, Bergen.</em> 5:397-420, suppl. pls. 27-42. [details]
Present Present in aphia/obis/gbif/idigbio Inaccurate Introduced: alien Containing type locality
From editor or global species database
Taxonomic remark a) Leptomesochra nichollsi Noodt, 1955 is the replacement name for Leptomesochra attenuata (Nicholls, 1939), but it is no longer in use and was rejected, and Leptameira attenuata Nicholls, 1939 is to be considered the valid name for the species it denotes. But since Huys (2009) made available Lang's genus name Leptameira as an intentionally new name, Leptameira attenuata Nicholls, 1939 should be accepted as Leptameira attenuata (Nicholls, 1939) and both do not enter into synonymy.b) Interleptomesochra Lang 1965 is a junior subjective synonym of Leptomesochra Sars, 1911. Then, Interleptomesochra attenuata (Scott A., 1896) of Lang's (1965) Interleptomesochra, is a junior subjective synonym of Normanella attenuata Scott A., 1896 of Sars' (1911) Leptomesochra. Then, Normanella attenuata Scott A., 1896 should be accepted as Interleptomesochra attenuata (Scott A., 1896) which in turn should be accepted as Leptomesochra attenuata (Scott A., 1896).
[details]
Taxonomic remark 1) According to Huys (2009), Sars (1911) proposed Leptomesochra for Mesochra macintoshi Scott & Scott, 1895, Normanella attenuata Scott A., 1896, Leptomesochra tenuicornis Sars, 1911, and Leptomesochra confluens Sars, 1911; but he did not fix the type species, rendering the genus name Leptomesochra unavailable.
2) Lang (1936) proposed the genus name Leptameira with Leptomesochra confluens as the type species, but did not include a diagnosis for Leptameira, rendering the genus name unavailable. Later, Nicholls (1939) added Leptameira attenuata Nicholls, 1939, and gave the diagnostic features to differentiate Leptameira, but he failed in fixing the type species, rendering the genus name unavailable one more time.
3) Lang (1944) relegated Leptameira to a junior subjective synonym of Leptomesochra, but the designation of Mesochra macintoshi as the type species of Leptomesochra was also invalid, rendering the genus name Leptomesochra unavailable again.
4) It was Vervoort (1964) who validly fixed Normanella attenuata Scott A., 1896 as the type species, and included Leptomesochra nasuta Sewell, 1940, Leptomesochra africana Kunz, 1951, Leptomesochra eulitoralis Noodt, 1952, Leptomseochra elongata Bozic, 1955, Leptomesochra pygmaea Vervoort, 1964 and Leptomesochra nichollsi Noodt, 1955, the latter is a substitute name of Leptomesochra attenuata (Nicholls, 1939), a secondary homonym of Leptomesochra attenuata (Scott A., 1896).
5) Lang (1965) revised the genus Leptomesochra and divided it into three genera:
- Praeleptomesochra Lang, 1965 (L. africana as the type species, plus Praeleptomesochra similis Lang, 1965, and Leptomesochra pygmaea),
- Leptomesochra Sars, 1911 (Mesochra macintoshi, Leptomesochra nasuta, Leptomesochra confluens, Leptomesochra infima, and Leptameira attenuata Nicholls, 1939),
- Interleptomesochra Lang, 1965 (L. tenicornis as the type species, plus Normanella attenuata Scott A., 1896, Leptomesochra tenuicornis, Leptomesochra elongata, Leptomesochra eulitoralis and Interleptomesochra reducta Lang, 1965)
Interleptomesochra Lang, 1965 became a junior subjective synonym of Leptomesochra Sars, 1911, because Sars (1911) concept of Leptomesochra and Lang's (1965) concept of Interleptomesochra contains Normanella attenuata Scot A., 1896, and the generic concept of Leptomesochra Sars, 1911 coincides with Lang's (1965) diagnosis of Interleoptomesochra.
Two other species were originally added to Interleptomesochra Lang, 1965, Interleptomesochra noodti Galhano, 1968, and Interleptomesochra boguensis Lindgren, 1975. Since Interleptomesochra Lang, 1965 is a junior synonym of Leptomesochra Sars, 1911, these two species became Leptomesochra noodti (Galhano, 1968) and Leptomesochra boguensis (Lindgren, 1975). Then, Leptomesochra (with Mesochra macintoshi, Leptomesochra nasuta, Leptomesochra confluens, Leptomesochra infima, and Leptameira attenuata Nicholls, 1939), became orphaned because its type species, Normanella attenuata Scott A., 1896, was left in Interleptomesochra.
Huys (2009) made available Lang's (1936) Leptameira with Leptomesochra confluens Sars, 1911 as the type species, and included Mesochra macintoshi Scott & Scott, 1895b = Leptameira macintoshi (Scott & Scott, 1895b) comb. nov., Leptomesochra confluens Sars, 1911c = Leptameira confluens (Sars, 1911c) comb. nov., Leptomesochra infima Monard, 1928 = Leptameira infima (Monard, 1928) comb. nov., Leptameira attenuata Nicholls, 1939a = Leptameira attenuata (Nicholls, 1939a) comb. nov.; Leptomesochra nasuta Sewell, 1940 = Leptameira nasuta (Sewell, 1940) comb. nov., Leptomesochra hirsuta Wiborg, 1964 = Leptameira hirsuta (Wiborg, 1964) comb. nov., Leptomesochra theodoridis Soyer, 1966 = Leptameira theodoridis (Soyer, 1966) comb. nov., Leptomesochra eremeensis Kornev & Chertoprud, 2008 = Leptameira eremeensis (Kornev & Chertoprud, 2008) comb. nov., and Leptomesochra kunzi Kornev & Chertoprud, 2008 = Leptameira kunzi (Kornev & Chertoprud, 2008) comb. nov.
[details]
Unreviewed
Distribution lower St. Lawrence estuary [details]Habitat infralittoral of the Gulf and estuary [details]
