Leptognathiidae Sieg, 1973 sensu Larsen & Shimomura 2007
Creators
Description
Family Leptognathiidae Sieg, 1973 sensu Larsen & Shimomura (2007)
(restricted synonymy and bibliography)
Leptognathiidae Sieg, 1973: unpublished, but see Sieg, 1976. Sieg, 1976: 185, 194. Leptognathiidae subfamily Leptognathiinae: Sieg, 1986b: 110.
Anarthruridae Lang, 1971 subfamily Leptognathiinae: Sieg, 1986a, 21, 44. Gutu & Sieg, 1999: 384. Leptognathiidae Sieg, 1973 [revised]: Larsen & Wilson, 2002: 2, 13. Larsen & Shimomura, 2007: 14.
Genera included (Japanese and Kurile-Kamchatka genera in bold): Biarticulata Larsen & Shimomura, 2007; Forcipatia Larsen & Shimomura, 2007; Leptognathia G.O. Sars, 1882.
Diagnosis (after Larsen & Shimomura 2007). Female. Medium body calcification. No plates in carapace. Eyes and eye-lobes absent. Pereon with six free pereonites; pereonite 1 not reduced. Pleon with five free pleonites, as wide as pereon; articulated setae on pleonites absent. Antennule four-articled. Antenna five or sixarticled, article 3 without spiniform setae dorsally. Molar process of mandible pointed. Labium with one pair of lobes, medial spiniform setae absent. Maxilliped bases fused, endites not fused, narrower than basis, without setose or serrated anterio-lateral corners, flat setae or denticles. Cheliped slender and attached via sclerite, fixed finger and dactylus elongated or simple. Pereopod coxae present or absent on pereopods 1–3 but always absent on pereopods 4–6; dactylus and unguis of pereopods 4–6 not fused. Pleopods well developed or absent. Uropodal endopod two-articled, exopod one or two-articled. Marsupium of four pairs of oostegites.
Preparatory male. Generally as above but antennule thicker and pleon and pleopods more well-developed.
Natatory (terminal) male. Body significantly shorter than female. Pereonites less, pleonites more developed than in female. Antennule seven-articled, densely packed with aesthetascs. Mouthparts reduced. Cheliped not enlarged. Pleopods well developed.
Remarks. As has happened with the Family Anarthruridae (Bird 2004), the Leptognathiidae has undergone considerable changes since its establishment by Sieg (1973). Major revisions occurred through Sieg’s (1986a, b) appraisal of pereopod setation and more recently as an outcome of a controversial phylogenetic analysis by Larsen & Wilson (op.cit.); included genera fell from nine (Exspina Lang, 1968; Leptognathia; Leptognathiopsis Holdich & Bird, 1986; Mirandotanais Kussakin & Tzareva, 1974; Pseudoleptognathia Sieg, 1986 b; Pseudoparatanais Sieg, 1973; Robustognathia Kudinova-Pasternak, 1989; Subulella Holdich & Bird, 1986 and Tanaopsis G.O. Sars, 1896) in Gutu & Sieg’s classification to just one (Leptognathia) in the Larsen & Wilson version. Very recently, Leptognathia itself has been partially revised, reduced in species complement, and split into three genera, Biarticulata, Forcipatia and Leptognathia sensu stricto, largely based on uropod morphology (Larsen & Shimomura 2007). Further restriction of the genus Leptognathia is highly probable, clustering around the type-species, L. breviremis (Lilljeborg, 1864).
Notes
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Linked records
Additional details
Identifiers
Related works
- Is part of
- Journal article: 10.5281/zenodo.178698 (DOI)
- Journal article: http://publication.plazi.org/id/FFA50B3AFF96757D4860FFF11E51FFCB (URL)
- Is source of
- https://sibils.text-analytics.ch/search/collections/plazi/039C7342FF9B757348F7F9631A26FBB9 (URL)
Biodiversity
- Family
- Leptognathiidae
- Kingdom
- Animalia
- Order
- Tanaidacea
- Phylum
- Arthropoda
- Scientific name authorship
- Sieg, 1973 sensu Larsen & Shimomura
- Taxon rank
- family
- Taxonomic concept label
- Leptognathiidae Sieg, 2007 sec. Bird, 2007
References
- Sieg, J. (1973) Ein Beitrag zum Naturlichen System der Dikonophora Lang. Dissertation, Christian-Albrecht-Universitat Kiel, 298 pp.
- Larsen, K. & Shimomura, M. (2007) Tanaidacea (Crustacea: Peracarida) from Japan. II. Tanaidomorpha from the East China Sea, the West Pacific Ocean and the Nansei Islands. Zootaxa, 1464, 1 - 43.
- Sieg, J. (1986 b) Crustacea Tanaidacea of the Antarctic and the Subantarctic. 1. On material collected at Tierra del Fuego, Isla de los Estados, and the West Coast of the Antarctic Peninsula. Biology of the Antarctic Seas XVIII, ed. L. S. Korniker, Antarctic Research Series 45, American Geophysical Union, 180 pp.
- Lang, K. (1971) Taxonomische und phylogenetische Untersuchungen uber die Tanaidaceen. 6. Revision der Gattung Paranarthrura Hansen, 1913, und Aufstellung von zwei neuen Familien, vier neuen Gattungen und zwei neuen Arten. Arkiv for Zoologi, 23 (5), 361 - 340.
- Sieg J. (1986 a) Tanaidacea (Crustacea) von der Antarktis und Subantarktis. II. Tanaidacea gessamelt von Dr. J. W. Wagele wahrend der deutschen Antarktis Expedition, 1983. Mitteilungen aus dem Zoologischen Museum der Universtitat Kiel, II (4), 1 - 80.
- Gutu, M. & Sieg, J. (1999) Ordres des Tanaidaces (Tanaidacea Hansen, 1895). Memoires de l'Institut oceanographique, Monaco, 19, 353 - 389.
- Larsen, K. & Wilson, G. D. F. (2002) Tanaidacean phylogeny, the first step: the Superfamily Paratanoidea. Journal of Zoological Systematics and Evolutionary Research, 40, 1 - 19.
- Sars, G. O. (1882) Revision af Gruppen: Isopoda Chelifera med Characteristik af nye herben horende Arter og Slaegter. Archiv for Matematik og Naturvidenskab, 7, 1 - 54.
- Bird, G. J. (2004) Tanaidacea (Crustacea) of the Northeast Atlantic: non-filiform species of Anarthruridae Lang from the Atlantic Margin. Zootaxa, 471, 1 - 44.
- Lang, K. (1968) Deep-sea Tanaidacea. Galathea Report, 9, 23 - 209.
- Holdich, D. M. & Bird, G. J. (1986) Tanaidacea (Crustacea) from sublittoral waters off West Scotland, including the description of two new genera. Journal of Natural History, 20, 79 - 100.
- Kussakin, O. G. & Tsareva, L. A. (1974) A new genus of Tanaidacea from the Antarctic. Zooloogeskij Zhurnal, 53 (1), 125 - 128.
- Kudinova-Pasternak, R. K. (1989) Tanaidacees abyssales (Crustacea, Tanaidacea) des parties nord-est et centrale de l'Ocean Indien (d'apres des materiaux de l'expedition francaise ' Safari-II'. 2. Sous-ordre Tanaidomorpha. Zooloogeskij Zhurnal, 68 (3), 27 - 40.
- Sars, G. O. (1896) Isopoda. An Account of the Crustacea of Norway 2, 1 - 270.
- Lilljeborg, W. (1864) Bidrag till Kannedomen om de inom Sverige och Norrige forekommande Crustaceer af Isopodernas underordning och Tanaidernas familj. Uppsala Universitet Arsskrifter, 5, 1 - 32.