Published October 17, 2024 | Version v1
Taxonomic treatment Open

Hydrops (Tachynectes) Fitzinger 1843

  • 1. Museum of Zoology, Senckenberg Natural History Collections Dresden, A. B. Meyer Building, 01109 Dresden, Germany
  • 2. Grupo Herpetológico de Antioquia (GHA), Instituto de Biología, Universidad de Antioquia, Medellín, Colombia
  • 3. Grupo Biodiversidad y Conservación Genética, Instituto de Genética, Universidad Nacional de Colombia, Bogotá, Colombia & Estación de Biología Tropical Roberto Franco (EBTRF), Universidad Nacional de Colombia, Villavicencio, Colombia
  • 4. Museum of Zoology, Senckenberg Natural History Collections Dresden, A. B. Meyer Building, 01109 Dresden, Germany & School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE 1 7 RU, UK

Description

Subgenus:

TachynectesFitzinger, 1843

Type species.

Homalopsis leopardina Schlegel, 1837.

Diagnosis.

Members of the subgenus Tachynectes have short hemipenial lobes decorated with spinules. The hemipenial body is homogeneously covered with spinules (Fig. 4 A), occasionally a few enlarged spines may occur, e. g., in H. (T.) phantasma.

Content.

Five species, Helicops (Tachynectes) infrataeniatus Jan, 1865, H. (T.) leopardinus (Schlegel, 1837), H. (T.) modestus Günther, 1861, H. (T.) phantasma Moraes-da-Silva et al., 2021, H. (T.) tapajonicus da Frota, 2005.

Comments.

Tachynectes von der Mark, 1863, erected for a genus of fossil fishes, is a primary junior homonym of Tachynectes Fitzinger, 1843. As Tachynectes von der Mark, 1863 has only been used four times in the past 50 years according to our searches (Google Scholar, Zoological Record: Sepkoski 2002; Albert et al. 2009; Dietze 2009; Schwarzhans and Carnevale 2021), it fails to meet the criterion in Article 23.9. 2 of the International Code of Zoological Nomenclature (ICZN 1999) for prevailing usage and is therefore unavailable. As a replacement name for Tachynectes von der Mark, 1863, we propose Ichthyotachynectes nom. nov. to accommodate the fossil fish species previously assigned to Tachynectes von der Mark, 1863.

Notes

Published as part of Hurtado-Gómez, Juan Pablo, Daza, Juan M., Vargas-Ramírez, Mario, Deepak, V. & Fritz, Uwe, 2024, Phylogeography of the Colombian water snake Helicops danieli Amaral, 1938 (Reptilia, Squamata, Dipsadidae) with comments on the systematics and evolution of the genus Helicops Wagler, 1828, pp. 335-358 in ZooKeys 1215 on pages 335-358, DOI: 10.3897/zookeys.1215.128795

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Linked records

Additional details

References

  • Fitzinger LJ (1843) Systema reptilium. Fasciculus primus. Amblyglossae. Braumuller et Seidel, Vindobona [Vienna], 106 pp. https: // doi. org / 10.5962 / bhl. title. 4694
  • Moraes-da-Silva A, Amaro RC, Nunes PMS, Rodrigues MT, Curcio FF (2021) Long known, brand new, and possibly threatened: A new species of watersnake of the genus Helicops Wagler, 1828 (Serpentes; Xenodontinae) from the Tocantins-Araguaia River Basin, Brazil. Zootaxa 4903: 151–193. https://doi.org/10.11646/zootaxa.4903.2.3
  • da Frota JG (2005) Nova especie de Helicops Wagler, 1830 (Serpentes, Colubridae) do rio Tapajos, Amazonia, Brasil. Phyllomedusa 4: 61 - 68. https: // doi. org / 10.11606 / issn. 2316 - 9079. v 4 i 1 p 61 - 67
  • Sepkoski JJ (2002) A compendium of fossil marine animal genera. Bulletin of American Paleontology 363: 1–500.
  • Albert JS, Johnson DM, Knouft JH (2009) Fossils provide better estimates of ancestral body size than do extant taxa in fishes. Acta Zoologica 90: 357–384. https://doi.org/10.1111/j.1463-6395.2008.00364.x
  • Dietze K (2009) Morphology and phylogenetic relationships of certain neoteleostean fishes from the Upper Cretaceous of Sendenhorst, Germany. Cretaceous Research 30: 559–574. https://doi.org/10.1016/j.cretres.2008.11.001
  • Schwarzhans W, Carnevale G (2021) The rise to dominance of lanternfishes (Teleostei: Myctophidae) in the oceanic ecosystems: A paleontological perspective. Paleobiology 47: 446–463. https://doi.org/10.1017/pab.2021.2