Myliobatidae
| Myliobatidae | ||||||||||||
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Myliobatis Fremdinvillii |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Myliobatidae | ||||||||||||
| Bonaparte , 1838 |
The Myliobatidae are a family of partly very large rays that live in tropical and subtropical regions.
features
Myliobatidae species are large to very large rays. Their rhombic body disc, together with the wing-like pectoral fins, can reach a width of three meters. The actual trunk is strong and thick; the head is narrow and clearly protruding. The eyes and the spray holes are on the side of the head. The latter are not visible from above. The mouth on the underside of the head is wide and has six to ten (in most cases seven) rows of teeth in each jaw. The middle row of teeth is always the widest. The tooth plates of the upper and lower jaw are shaped similarly. The nasal skin is straight or slightly wavy and not indented as in Aetobatus . The front edge of the broad pectoral fins is below the eyes. Their outer ends are narrowly rounded, the rear ends are angular, sometimes pointed. On the front tail area there is a small dorsal fin, the rear end of which is also attached to the tail, so it is not free. The dorsal fin begins in the genus Aetomylaeus in front of the ends of the pelvic fins, in the genus Myliobatis it lies behind the ends of the pelvic fins. The tail is always much longer than the body disc and like a whip. The tail base is narrow. Tail spines are present in most species, but absent in most Aetomylaeus species.
Genera and species
- Genus Aetomylaeus
- Aetomylaeus asperrimus ( Gilbert , 1898)
- Duckbill rays ( Aetomylaeus bovinus ) ( Geoffroy Saint-Hilaire , 1817)
- Aetomylaeus caeruleofasciatus White et al., 2015
- Aetomylaeus episcopus ( Valenciennes , 1844)
- Aetomylaeus maculatus (Gray, 1832)
- Aetomylaeus milvus (Müller & Henle, 1841)
- Aetomylaeus nichofii (Bloch & Schneider, 1801)
- Aetomylaeus vespertilio (Bleeker, 1852)
- Genus Myliobatis
- Common eagle ray ( Myliobatis aquila ) (Linnaeus, 1758)
- California eagle ray ( Myliobatis californica ) Gill, 1865
- Myliobatis chilensis Philippi, 1893
- Myliobatis Fremdinvillii Lesueur, 1824
- Myliobatis goodei Garman, 1885
- Myliobatis hamlyni Ogilby, 1911
- Myliobatis longirostris Applegate & Fitch, 1964
- Myliobatis peruvianus Garman, 1913
- Myliobatis ridens Ruocco, Lucifora et al. 2012
- Myliobatis tenuicaudatus Hector, 1877
- Myliobatis tobijei Bleeker, 1854
Systematics
The Myliobatidae family was introduced in 1838 by the French zoologist Charles Lucien Jules Laurent Bonaparte . With Aetomylaeus and Myliobatis , only two genera still belong to the family. Another genus, Aetobatus is since mid-2016 in a separate, mono generic out family Aetobatidae and the Devil Rays (Mobulidae) and rhinoptera (Rhinopteridae) that took place even as subfamilies of Myliobatidae until recently, now form separate families.
literature
- White, WT & Naylor, GJP (2016): Resurrection of the family Aetobatidae (Myliobatiformes) for the pelagic eagle rays, genus Aetobatus. Zootaxa , 4139 (3): 435-438. doi: 10.11646 / zootaxa.4139.3.10
Web links
- Myliobatidae on Fishbase.org (English)