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Published June 5, 2026 | Version v1
Taxonomic treatment Open

Leucon fracturensis Muhlenhardt-Siegel 2019

Authors/Creators

  • 1. Leibniz Institute for the Analysis of Biodiversity Change, Centre for Taxonomy and Morphology, Museum of Nature Hamburg, Zoology, Hamburg, Germany
  • 2. Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Biodiversidad y Biología Experimental (DBBE), Buenos Aires, Argentina & Universidad de Buenos Aires – CONICET, Instituto de Biodiversidad y Biología Experimental y Aplicada (IBBEA), Buenos Aires, Argentina
  • 3. Leibniz Institute for the Analysis of Biodiversity Change, Centre for Taxonomy and Morphology, Museum of Nature Hamburg, Zoology, Hamburg, Germany & Leibniz Institute for the Analysis of Biodiversity Change, Centre for Biodiversity Knowledge Science, Museum of Nature Hamburg, Zoology, Hamburg, Germany

Description

Leucon fracturensis Mühlenhardt-Siegel, 2019

Fig. 36

Holotype.

North Atlantic Ocean • ovig. ♀; Eastern Fracture Zone, Vema-TRANSIT exped., FS Sonne stat. SO 237-04-9; 10°25.54'N, 31°03.10'W [10.42583, - 31.05183; 10.4275, - 31.04967]; 5733-5735 [5736.6–5732.9] m depth; 27 December 2014; Colin Devey leg.; epibenthic sledge; ZMH -K-046045.

Paratypes.

* • 1 m. + prep. ♀; Eastern Fracture Zone, Vema-TRANSIT exped., FS Sonne stat. SO 237-02-6; 10°43.68'N, 25°03.83'W [10.72817, - 25.06383; 10.72983, - 25.06217]; 5520 [5501.6–5515.1] m depth; 20 December 2014; Colin Devey leg.; epibenthic sledge; ZMH -K-046046. * • 2 m. + subA. ♂ + prep. ♀; Eastern Fracture Zone, Vema-TRANSIT exped., FS Sonne stat. SO 237-02-7; 10°42.75'N, 25°03.38'W [10.713, - 25.056; 10.715, - 25.053 33]; 5514 [5490.2–5292.6] m depth; 20 December 2014; Colin Devey leg.; epibenthic sledge; ZMH -K-046047. * • 3 m. + 4 subA. ♂♂ + 7 prep. ♀♀; Eastern Fracture Zone, Vema-TRANSIT exped., FS Sonne stat. SO 237-04-8; 10°25.52'N, 31°04.52'W [10.42533, - 31.0755; 10.427, - 31.073 5]; 5735 [5734.3–5724.7] m depth; 26 December 2014; Colin Devey leg.; epibenthic sledge; ZMH -K-046048. * • subA. ♂ + 4 prep. ♀♀; same data as holotype; ZMH -K-046049. * • prep. ♀; Eastern Fracture Zone, Vema-TRANSIT exped., FS Sonne stat. SO 237-06-8; 10°22.59'N, 36°55.49'W [10.3765, - 36.92467; 10.37733, - 36.92317]; 5119 [5117.3–5114.3] m depth; 02 January 2015; Nils Brenke leg.; epibenthic sledge; specimen dissected mounted on a permanent slide; ZMH -K-046050. * • prep. ♀ + ovig. ♀; Western Fracture Zone, Vema-TRANSIT exped., FS Sonne stat. SO 237-11-1; 12°05.83'N, 50°28.13'W [12.09717, - 50.46883; 12.0975, - 50.46617]; 5089 [5091.8–5085.5] m depth; 14 January 2015; Angelika Brandt leg.; epibenthic sledge; ZMH -K-046051. * • juv. ♂; Puerto Rico Trench, Vema-TRANSIT exped., FS Sonne stat. SO 237-14-2; 19°04.55'N, 67°07.86'W [19.07583, - 67.131; 19.07783, - 67.1295]; 4934 [4935.4–4928.3] m depth; 24 January 2015; Angelika Brandt leg.; epibenthic sledge; ZMH -K-046052. * • ovig. ♀; Puerto Rico Trench, Vema-TRANSIT exped., FS Sonne stat. SO 237-14-1; 19°02.08'N, 67°09.44'W [19.03467, - 67.15733; 19.03517, - 67.157]; 4552 [4918.9–4921.1] m depth; 24 January 2015; Nils Brenke leg.; epibenthic sledge; ZMH -K-047781.

Diagnosis.

Carapace with 2 larger plus 2 to 3 smaller dorsomedial teeth on anterior part, and without any lateral teeth; pseudorostral lobes long, acute, with teeth only below. Antenna 1, accessory flagellum as long as basal article of main flagellum (after Mühlenhardt-Siegel 2019).

Distribution.

North Atlantic, Vema Fracture Zone, 4552–5735 m depth.

Notes

Published as part of Mercado-Salas, Nancy F., Mühlenhardt-Siegel, Ute, Pereira, Emanuel & Garilao, Cristina, 2026, An annotated type catalogue and a fully digitised Crustacea collection of the Museum of Nature Hamburg, Zoology. Part I: Crustacea, Malacostraca, Peracarida, Cumacea, pp. 137-193 in Evolutionary Systematics 10 (1) on pages 137-193, DOI: 10.3897/evolsyst.10.187593

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Linked records

Additional details

Identifiers

URL
http://treatment.plazi.org/id/9F8B4D375FD659BBA8A82C599728025E

Cites
Publication: 10.11646/zootaxa.4572.1.1 (DOI)
Figure: https://binary.pensoft.net/fig/1671030 (URL)
Is part of
Journal article: 10.3897/evolsyst.10.187593 (DOI)
Journal article: http://publication.plazi.org/id/8F1E42BA65FB5F4889B31FAE9D4DCB8D (URL)
Journal article: http://zoobank.org/B9917028-8C0B-477F-B70B-7A9DE7027756 (URL)
Is source of
https://biodiversitypmc.sibils.org/collections/plazi/9F8B4D375FD659BBA8A82C599728025E (URL)
https://www.gbif.org/species/324076808 (URL)
https://www.checklistbank.org/dataset/315365/taxon/9F8B4D375FD659BBA8A82C599728025E.taxon (URL)

Biodiversity

Collection code
ZMH
Material sample ID
ZMH-K-046045 , ZMH-K-046046 , ZMH-K-046047 , ZMH-K-046048 , ZMH-K-046050 , ZMH-K-046051 , ZMH-K-046052 , ZMH-K-047781
Event date
2014-12-20 , 2014-12-26 , 2014-12-27 , 2015-01-02 , 2015-01-14 , 2015-01-24
Verbatim event date
2014-12-20 , 2014-12-26 , 2014-12-27 , 2015-01-02 , 2015-01-14 , 2015-01-24
Scientific name authorship
Muhlenhardt-Siegel
Kingdom
Animalia
Phylum
Arthropoda
Order
Cumacea
Family
Leuconidae
Genus
Leucon
Species
fracturensis
Taxon rank
species
Type status
holotype , paratype
Taxonomic concept label
Leucon fracturensis Muhlenhardt-Siegel, 2019 sec. Mercado-Salas, Mühlenhardt-Siegel, Pereira & Garilao, 2026

References

  • Mühlenhardt-Siegel U (2019) The Cumacea (Crustacea: Peracarida) from a North Atlantic Transect with RV " Sonne " with the description of ten new species. Zootaxa 4572: 1–75. https://doi.org/10.11646/zootaxa.4572.1.1