Published June 5, 2026 | Version v1

Abyssoleucon tzarevae Lavrenteva & Muhlenhardt-Siegel 2015

  • 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

Abyssoleucon tzarevae Lavrenteva & Mühlenhardt-Siegel, 2015

Paratype.

North Pacific Ocean • 2 ♂♂ + 4 ♀♀; Kuril-Kamtschatka-Trench, KuramBIO exped., FS Sonne stat. SO 223-3-9; 47.24°N, 154.70°E [47.2305, 154.698; 47.24783, 154.71967]; 4859–4863 [4987.5–4997.9] m depth; 05 August 2012; Angelika Brandt & Marina Malyutina leg.; epibenthic sledge; ZMH -K-044210.

Remarks.

Lavrenteva and Mühlenhardt-Siegel (2015) deposited the holotype (MIMB 29046), allotype (MIMB 29047), and additional paratypes (MIMB 29048, MIMB 29049, MIMB 29050, MIMB 29051) at the MIMB.

Diagnosis for the genus and species. Similar to Bytholeucon in respect of teeth ventrally of pseudorostrum, teeth on basal article of exopods of maxilliped 3 and pereopod 1; accessory flagellum approximately as long as basal article of main flagellum. The discriminating characters between Bytholeucon and Abyssoleucon are: no pleopods in male in Abyssoleucon / 1 pair of pleopods in Bytholeucon; antennal notch narrow in Abyssoleucon / wide in Bytholeucon; antennal notch reaches backwards behind anterior tip of ocular lobe in Abyssoleucon / maximal to the level of ocular lobe in Bytholeucon; subrostral tooth relatively small, not extending beyond level of ocular lobe in Abyssoleucon / strong, almost reaching tip of pseudorostrum in Bytholeucon; more (21) dorsomedian teeth in Abyssoleucon / in Bytholeucon only fewer (max. 14) (after Lavrenteva & Mühlenhardt-Siegel, 2015).

Distribution.

Northwest Pacific, Kuril-Kachatka abyssal plains, 4859–5780 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

Biodiversity

Collection code
ZMH
Material sample ID
ZMH-K-044210
Event date
2012-08-05
Verbatim event date
2012-08-05
Scientific name authorship
Lavrenteva & Muhlenhardt-Siegel
Kingdom
Animalia
Phylum
Arthropoda
Order
Cumacea
Family
Leuconidae
Genus
Abyssoleucon
Species
tzarevae
Taxon rank
species
Type status
paratype
Taxonomic concept label
Abyssoleucon tzarevae Lavrenteva, 2015 sec. Mercado-Salas, Mühlenhardt-Siegel, Pereira & Garilao, 2026

References

  • Lavrenteva AV, Mühlenhardt-Siegel U (2015) Three new species and one new genus of abyssal Cumacea (Crustacea, Malacostraca, Cumacea) from the Kuril Kamchatka Trench area. Deep-Sea Research II 111: 301–324. https://doi.org/10.1016/j.dsr2.2014.08.013