Neotrygon

Neotrygon
Bluespotted stingray (N. kuhlii)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Order:	Myliobatiformes
Family:	Dasyatidae
Genus:	Neotrygon Castelnau, 1873
Type species
Neotrygon kuhlii (J. P. Müller & Henle, 1841)

The maskrays are a genus, Neotrygon, of stingrays, family Dasyatidae, native to the Indo-West Pacific. They are so named because of a distinctive color pattern around their eyes, resembling a mask. The species in this genus were originally placed in the genus Dasyatis by most authors. However, recent morphological and molecular analyses have conclusively showed that they represent a distinct group, and so the genus Neotrygon was resurrected for them.

Aside from their mask-like color pattern, the maskrays are variable in coloration and can be plain or ornate. Their pectoral fin discs are largely smooth, with a single row of thorns along the dorsal midline. The mouth is small with two central papillae and a row of enlarged, long-cusped teeth halfway along the upper jaw on both sides. The nasal curtain, formed by the merging of the nasal flaps, is long and narrow. The tail is very short with well-developed dorsal and ventral fin folds and a filamentous tip, and is banded black and white past the stinging spine. In addition, Neotrygon species also differ from other stingrays in their buccal and skeletal morphology, as well as in the CO1 gene.^[1]

Species

• Neotrygon annotata (Last, 1987) (Plain maskray)
• Neotrygon kuhlii (J. P. Müller & Henle, 1841) (Blue-spotted stingray)
• Neotrygon leylandi (Last, 1987) (Painted maskray)
• Neotrygon ningalooensis Last, W. T. White & Puckridge, 2010
• Neotrygon picta Last & W. T. White, 2008 (Peppered maskray)

References

• Froese, Rainer, and Daniel Pauly, eds. (2011). Species of Neotryon in FishBase. February 2011 version.

1. ^ Last, P.R. and 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. and Pogonoski, J.J.. Descriptions of New Australian Chondrichthyans. CSIRO Marine and Atmospheric Research.