Published June 5, 2026 | Version v1

Leucon weigmanni Muhlenhardt-Siegel 2011

  • 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 weigmanni Mühlenhardt-Siegel, 2011

Fig. 44

Holotype.

Southern Ocean • non-ovig. ♀; Peninsula, Weddell Sea, ANDEEP I (ANT XIX/3) exped., FS Polarstern stat. PS 61/3-042-2; 59°39.88'S, 57°35.94'W [- 59.6715, - 57.5906; - 59.6737, - 57.5878]; 3690 [3683–3680] m depth; 27 January 2002; Bente [Retzloff] Stransky leg.; epibenthic sledge; specimen dissected; ZMH -K-042953.

Paratypes.

* • 1 m. + 3 ovig. ♀♀ + 2 non-ovig. ♀♀; same data as holotype; ZMH -K-042954. Southern Ocean • 2 ♀♀; Vicinity South Shetland Islands, ANDEEP I (ANT XIX/3) exped., FS Polarstern stat. PS 61/3-114-4; 61°43.54'S, 60°44.21'W to 61°43.51'S, 60°44.43'W [- 61.7257, - 60.7367; - 61.7257, - 60.7425]; 2921 [2914–2920] m depth; 17 February 2002; Bente [Retzloff] Stransky leg.; epibenthic sledge; one specimen dissected; ZMH -K-067125. * • 3 m. + 2 non-ovig. ♀♀; W Weddell Sea, ANDEEP III (ANT XXII/3) exped., FS Polarstern stat. PS 67-121-10; 63°38.27'S, 50°37.16'W to 63°37.31'S, 50°38.04'W [- 63.6288, - 50.6349; - 63.6259, - 50.6395]; 2659 [2663–2659] m depth; 14 March 2005; Angelika Brandt leg.; epibenthic sledge; ZMH -K-067126. * • 2 m. + ♂ + 2 subA. ♀♀; Eastern Weddell Sea, ANDEEP III (ANT XXII/3) exped., FS Polarstern stat. PS 67-078-9; 71°09.52'S, 14°0.76'W to 71°09.34'S, 13°58.85'W [- 71.16, - 14.000 8; -71.156, -13.980 2]; 2149 [2174–2147] m depth; 22 February 2005; Angelika Brandt leg.; epibenthic sledge; ZMH -K-067127. * • m. LOST; SE Weddell Sea, ANT XV/3 exped., FS Polarstern stat. PS 48-133; 74°31.72'S, 27°12.80'W [- 74.5283, - 27.2133; - 74.5316, - 27.22]; 2119 [2029–2043] m depth; 09 February 1998; Angelika Brandt leg.; epibenthic sledge; ZMH -K-067680.

Remarks.

In the original publication, only one collection number was assigned to the ZMH - K paratypes, even though the specimens were collected at five different stations. Here, we assigned a new collection number to four lots, including one paratype that is lost (see above); the original number given by Mühlenhardt-Siegel (2011 a) is retained by the first lot listed in the paratype section.

Diagnosis.

Carapace, dorsomedian line with 5–7 teeth; a maximum of 3 teeth laterally; pseudorostrum with 2 tiny teeth. Pereonites 3–5, posterior margin smooth. Antenna 1, peduncle article 3 shorter than article 2 (after Mühlenhardt-Siegel 2011 a).

Distribution.

Southern Ocean, 2119–3690 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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