Urolophus
| Urolophus | ||||||||||||
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Urolophus cruciatis , the type species of the genus |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Urolophus | ||||||||||||
| Müller & Henle , 1837 |
Urolophus is a genus from the family of the round stingray (Urolophidae).
features
Urolophus species are small to medium-sized rays with an approximately round or diamond-shaped body disc . The width of the body disk corresponds to its length or it is up to 1.3 times wider than it is long. Eyes and injection holes are close together on the back. The body disc is widest directly behind the injection holes. The tips of the pectoral fins are approximately angular or broadly rounded, the pelvic fins triangular or rounded. The surface of the back is smooth. The rock-shaped skin folds on the nostrils have grown together completely and extend to the mouth. The tail is about the same length as the body disc and has a conspicuous sting. A small caudal fin is present, a dorsal fin only in a few species. Urolophus species are monochrome on the back or patterned by wide bands, large spots or a network drawing. The ventral side is light in most cases, and more rarely also dark.
species
- Urolophus aurantiacus Müller & Henle, 1841 .
- Urolophus bucculentus Macleay, 1884 .
- Urolophus circularis McKay, 1966 .
- Urolophus cruciatus ( Lacépède , 1804) .
- Urolophus deforgesi Séret & Last, 2003 .
- Urolophus expansus McCulloch, 1916 .
- Urolophus flavomosaicus Last & Gomon, 1987 .
- Urolophus gigas Scott, 1954 .
- Urolophus javanicus (Martens, 1864) .
- Urolophus kaianus Günther , 1880 .
- Urolophus lobatus McKay, 1966 .
- Urolophus mitosis Last & Gomon, 1987 .
- Urolophus neocaledoniensis Séret & Last, 2003 .
- Urolophus orarius Last & Gomon, 1987 .
- Urolophus papilio Séret & Last, 2003 .
- Urolophus paucimaculatus Dixon, 1969 .
- Urolophus piperatus Séret & Last, 2003 .
- Urolophus sufflavus Whitley, 1929 .
- Urolophus viridis McCulloch, 1916 .
- Urolophus westraliensis Last & Gomon, 1987 .
The genus Urolophus originally also included the species of the genera Urobatis and Urotrygon . Today, the two genera form the American round stingray family (Urotrygonidae).
literature
- David A. Ebert: Deep-sea Cartilaginous Fishes of the Indian Ocean. Volume 1 Batoids and Chimaeras . FAO Species Catalog for Fishery Purposes No. 8, Vol. 2, ISSN 1020-8682, page 86.
Web links
- Urolophus on Fishbase.org (English)