The front margins are nearly straight, meeting the tip of the snout at a blunt angle. It has a diamond-shaped pectoral fin disc about a sixth wider than long, with the outer corners broadly rounded. The longtail stingray reaches a maximum known disc width of 1.58 m (5.2 ft), length of 2.57 m (8.4 ft), and weight of 46.4 kg (102 lb). In the Galapagos, it was reportedly abundant in the shallow lagoons of mangrove swamps at Fernandina Island. This species inhabits sandy or muddy flats to a depth of 90 m (300 ft), often near rocky or coral reefs, or in estuaries. The longtail stingray is found along the tropical Pacific coast of the Americas, from central Baja California (though it may occur as far north as San Diego, California) to Colombia, including the Revillagigedo and Galapagos Islands. These two species may have evolutionarily diverged with the formation of the Isthmus of Panama ( c.
americanus) of the western Atlantic is the sister species of the longtail stingray.
A 2001 phylogenetic analysis by Lisa Rosenberger, based on morphological characters, found that the southern stingray ( H. Subsequent authors placed this species in the genus Dasyatis. He gave it the name Trygon longa, in reference to the long tail, and designated a specimen from Acapulco, Mexico and another from Panama as the syntypes. It is caught for food, likely throughout its range, but specific fishery data is lacking.Īmerican zoologist Samuel Garman published the original description of the longtail stingray in an 1880 issue of the scientific journal Bulletin of the Museum of Comparative Zoology. It is aplacental viviparous, with females giving birth to 1–5 young in late summer. The longtail stingray feeds mainly on bottom-dwelling bony fishes and crustaceans. Measuring up to 1.56 m (5.1 ft) across, this species has a rhomboid pectoral fin disc, a lower (but not upper) fin fold on the tail, and numerous dermal denticles along the back and behind the stinging spine. It inhabits sandy habitats down to a depth of 90 m (300 ft).
The longtail stingray ( Hypanus longus, often misspelled longa), is a species of stingray in the family Dasyatidae, found in the eastern Pacific Ocean from Baja California to Colombia.
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