Pastinachus Gracilicaudus on:
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''Pastinachus'' is a
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...
of stingrays in the family Dasyatidae. This genus was long held to be monotypic
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispe ...
, containing only the cowtail stingray
The cowtail stingray (''Pastinachus sephen'') is a species of stingray in the family Dasyatidae, widespread in the Indo-Pacific region and occasionally entering freshwater habitats. Other common names include banana-tail ray, drab stingray, ...
(''P. sephen''). Recent studies of Indo-Pacific stingrays have revealed that there are in fact a number of different species of ''Pastinachus'', and that some former junior synonyms
The Botanical and Zoological Codes of nomenclature treat the concept of synonymy differently.
* In botanical nomenclature, a synonym is a scientific name that applies to a taxon that (now) goes by a different scientific name. For example, Linn ...
may need to be resurrected.
Species
*''Pastinachus ater
''Pastinachus'' is a genus of stingrays in the family Dasyatidae. This genus was long held to be monotypic, containing only the cowtail stingray (''P. sephen''). Recent studies of Indo-Pacific stingrays have revealed that there are in fact a ...
'' ( W. J. Macleay, 1883) (Broad cowtail stingray)
*'' Pastinachus gracilicaudus'' Last
A last is a mechanical form shaped like a human foot. It is used by shoemakers and cordwainers in the manufacture and repair of shoes. Lasts typically come in pairs and have been made from various materials, including hardwoods, cast iron, an ...
& Manjaji-Matsumoto, 2010 (Narrow cowtail stingray)
*'' Pastinachus sephen'' ( Forsskål, 1775) (Cowtail stingray)
*'' Pastinachus solocirostris'' Last
A last is a mechanical form shaped like a human foot. It is used by shoemakers and cordwainers in the manufacture and repair of shoes. Lasts typically come in pairs and have been made from various materials, including hardwoods, cast iron, an ...
, Manjaji & Yearsley
Yearsley is a small village and civil parish in the district of Hambleton in North Yorkshire, England. The population of the civil parish was less than 100 at the 2011 Census. Details are included in the civil parish of Brandsby-cum-Stearsby. ...
, 2005 (Roughnose cowtail stingray)
*'' Pastinachus stellurostris'' Last
A last is a mechanical form shaped like a human foot. It is used by shoemakers and cordwainers in the manufacture and repair of shoes. Lasts typically come in pairs and have been made from various materials, including hardwoods, cast iron, an ...
, Fahmi & Naylor, 2010 (Starrynose cowtail stingray)
Phylogeny
Combining the molecular genetic relationship analysis of the NADH2 DNA, which was used to assign ''Pastinachus stellurostris'', and the analysis of the COI gene, which was used to evaluate ''P. gracilicaudus'' accordingly,Peter R. Last, B. Mabel Manjaji-Matsumoto: ''Description of a new stingray,'' Pastinachus gracilicaudus ''sp. nov. (Elasmobranchii, Myliobatiformes), based on material from the Indo-Malay Archipelago.'' In: P. R. Last, W. T. White, J. J. Pogonoski (Hrsg.): ''Descriptions of new sharks and rays from Borneo.'' CSIRO Marine and Atmospheric Research Paper no. 32; S. 115–128, 2010 results in approximately the following cladogram for the genus:
References
* {{Taxonbar, from=Q139609 Dasyatidae Ray genera Taxa named by Eduard Rüppell