Rays Codexery

Hemitrygon

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Hemitrygon

D. S. Jordan and R. E. Richardson · via Wikipedia: Hemitrygon · Public domain

GBIF holds 2,854 occurrence records for Hemitrygon as of October 2026.[1] Stingrays belonging to the genus Hemitrygon are placed within the Dasyatidae family and inhabit marine, brackish, and freshwater settings.[2][3] Earlier taxonomic treatments considered Hemitrygon to be a junior synonym of Dasyatis.[2]

Scientific classification

  1. KingdomAnimalia
  2. PhylumChordata
  3. ClassChondrichthyes
  4. SubclassElasmobranchii
  5. OrderMyliobatiformes
  6. FamilyDasyatidae
  7. GenusHemitrygon

Named by Müller & Henle, 1838

Sources: Wikipedia taxobox: Hemitrygon (CC BY-SA 4.0)

Quick Facts

Type species
Trygon bennettii

Facts from the source article.

Biology and range

The genus includes the Red stingray (Hemitrygon akajei) and the Ariake stingray (Hemitrygon ariakensis).[4] Other species are Bennett's stingray (Hemitrygon bennetti) and the estuary stingray (Hemitrygon fluviorum).[4] The Izu stingray (Hemitrygon izuensis) and Yantai stingray (Hemitrygon laevigata) are also members.[4] The Mekong freshwater stingray (Hemitrygon laosensis) and Merauke stingray (Hemitrygon longicauda) belong to this genus.[4]

The blackish stingray (Hemitrygon navarrae) and dwarf black stingray (Hemitrygon parvonigra) are included.[4] The Chinese stingray (Hemitrygon sinensis) and Hemitrygon yemenensis are also recognized species.[4] The geographic distribution of Hemitrygon species spans the central Indo-Pacific and northwest Pacific.[2] A new species, Hemitrygon yemenensis, was formally described in 2020 based on specimens that had been gathered approximately 120 years earlier.[4]

Some authorities note that the classification of Hemitrygon is in need of review, because certain currently recognized species might actually be synonyms and additional undescribed species likely exist.[4]

What the specialist sources record

The World Register of Marine Species lists Hemitrygon as an accepted genus in the family Dasyatidae.[3] GBIF also accepts Hemitrygon as a genus in the class Elasmobranchii.[1] A 2020 Zootaxa paper by Moore, Last and Naylor described the species H. yemenensis.[4] The same 2020 paper notes that there may be undescribed species in the genus.[4]

References

  1. GBIF Backbone Taxonomy and occurrence index, Hemitrygon (taxon key 2419708). CC BY 4.0 (backbone); counts are facts. gbif.org
  2. Wikipedia, "Hemitrygon" (CC BY-SA 4.0), which cites: "A revised classification of the family Dasyatidae (Chondrichthyes: Myliobatiformes) based on new morphological and molecular insights", Zootaxa, 2016, p. 345–368 (original not read by us) en.wikipedia.org
  3. World Register of Marine Species, Hemitrygon (AphiaID 1042844). CC BY 4.0. marinespecies.org
  4. Wikipedia, "Hemitrygon" (CC BY-SA 4.0), which cites: Moore, "Hemitrygon yemenensis sp. nov., a new species of stingray (Myliobatoidea: Dasyatidae) from the northwestern Indian Ocean", Zootaxa, 2020-07-23, p. 364–374 (original not read by us) en.wikipedia.org

Each numbered sentence above was checked against the source it cites before publication. Sentences citing Wikipedia adapt text from the English Wikipedia article Hemitrygon (contributors), used under CC BY-SA 4.0; this entry is available under the same licence. Other sources were used for facts only; no text or images are copied from them.

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Sources

Compiled from Wikipedia and the sources listed below. Text from Wikipedia is available under CC BY-SA 4.0; this entry is adapted from it.

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