Neotrygon Castelnau 1873
Description
Genus Neotrygon Castelnau, 1873
Neotrygon Castelnau, 1873:122. Type species Raya trigonoides Castelnau, 1873; by monotypy.
Definition. Small dasyatids (adults to 27–47 cm DW) characterised by the following: moderately depressed to robust, rhombic disc with pectoral-fin apex typically narrowly angular; snout obtuse and short (1.2–2.3 times combined orbit and spiracle length); eye large and protruding (often greatly); nasal curtain narrow, typically subrectangular; mouth narrow with 2 large median oral papillae; tail flexible and short (length 1.1–1.5 times DW), its base medium-broad and depressed to flattened oval; pelvic fins long and pointed, protruding slightly to wellbeyond disc; dorsal fold well developed; ventral fold low with a long base; caudal sting positioned moderately well back on tail (distance from pectoral-fin insertion to caudal-sting base 2.1–2.8 times interspiracular width); skin smooth and denticle band absent; row of small median thorns in most adults, no other thorns on disc; tail smooth; typically with strong dorsal colour pattern, usually with dark mask-like marking around eyes and blue or black spots on disc; posterior tail with black and white bands; ventral surface white, disc margin typically darker; marine, Indo– West Pacific.
Species. N. annotata (Last, 1987), N. australiae Last, White & Séret, 2016, N. caeruleopunctata Last, White & Séret, 2016, N. kuhlii (Müller & Henle, 1841), N. leylandi (Last, 1987), N. ningalooensis Last, White & Puckridge, 2010, N. orientale Last, White & Séret, 2016, N. picta Last & White, 2008, N. trigonoides (Castelnau, 1873), and N. varidens (Garman, 1885).
Remarks. The taxonomy of a subgroup of Neotrygon, the kuhlii-complex, is not fully resolved (Puckridge et al., 2013). Three new members of the kuhlii-complex were described recently and a Western Pacific species (N. varidens) was resurrected (Last et al., 2016). Members of this subgroup are very similar in morphology and an Indo–Pacific revision is needed.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Dasyatidae
- Genus
- Neotrygon
- Kingdom
- Animalia
- Order
- Myliobatiformes
- Phylum
- Chordata
- Scientific name authorship
- Castelnau
- Taxon rank
- genus
- Taxonomic concept label
- Neotrygon Castelnau, 1873 sec. Last, Naylor & Manjaji-Matsumoto, 2016
References
- Last, P. R. (1987) New Australian fishes. Part 14. Two new species of Dasyatis (Dasyatididae). Memoirs of the National Museum of Victoria, 48, 57 - 61.
- Last, P. R. & White, W. T. (2008) Resurrection of the genus Neotrygon Castelnau (Myliobatoidei: Dasyatidae) with the description of Neotrygon picta sp. nov., a new species from northern Australia. In: Last, P. R., White, W. T. & Pogonoski, J. J. (Eds.), Descriptions of New Australian Chondrichthyans. CSIRO Marine and Atmospheric Research Paper, 0 22, pp. 315 - 325.
- Puckridge, M., Last, P. R., White, W. T. & Andreakis, N. (2013) Phylogeography of the Indo - West Pacific maskrays (Dasyatidae, Neotrygon): a complex example of chondrichthyan radiation in the Cenozoic. Ecology and Evolution, 3, 217 - 232. http: // dx. doi. org / 10.1002 / ece 3.448