Aetomylaeus Garman, 1908

Ebert, David A., White, William T., Ho, Hsuan-Ching, Last, Peter R., Nakaya, Kazuhiro, Séret, Bernard, Straube, Nicolas, Naylor, Gavin J. P. & De Carvalho, Marcelo R., 2013, An annotated checklist of the chondrichthyans of Taiwan, Zootaxa 3752 (1), pp. 279-386 : 366-367

Genus Aetomylaeus Garman, 1908

Smoothtail Eagle Rays / âäḍé

Aetomylaeus Garman, 1908: 252 . Type species: Myliobatis maculatus Gray, 1834 , by original designation; misspelled Aetomyleus in Zoological Record for 1908.

Aetomylaeus maculatus (Gray, 1834)

Mottled Eagle Ray / AEºĝḓŎẽ

Myliobatus maculatus Gray, 1834 : no page number, pl. 101. No types known; Penang, Malaysia .

Local synonymy: Aetomylus maculatus: Chen & Chung, 1971: 45 . Aetomylus milvus: Chen & Chung, 1971: 47 . Aetomylaeus maculatus: Chen & Yu, 1986: 162 . Aetomylaeus milvus: Chen & Yu, 1986: 163 .

Taiwan voucher material: FRIP 03570.

Remarks: Very few Taiwanese records exist of this species. Taiwan is the northernmost point of its distribution so possibly only extralimital records exist for Taiwan. Previously confused with Aetomylaeus milvus ( Müller & Henle, 1841) , which is probably confined to the Western Indian Ocean; confusion based on colour pattern with forms with spots only referred to as A. maculatus and those with a slight reticulated pattern referred to as A. milvus , but differences are ontogenetic with smaller specimens having some reticulations as well as spots.

Conservation status: Endangered.

Aetomylaeus nichofii ( Bloch & Schneider, 1801)

Banded Eagle Ray / ȌkĝḓŎẽ

Raja niehofii Bloch & Schneider, 1801: 364 (579). No types known; East Indies ( Indonesia).

Local synonymy: Aetomylus nichofii: Chen & Chung, 1971: 46 , fig. 28. Aetomylaeus nichofii: Chen & Yu, 1986: 163 ; Chen & Joung, 1993: 89, pl. 13 (fig. 4); Shen & Wu, 2011: 104, fig.

Taiwan voucher material: (5 spec.) NMMB-P 6290 , Kaohsiung, 7 Feb 1966 ; CAS 235433 , adult male 505 mm DW, Da-xi , 25 May 2005 ; AMNH 258302 (tissue accession GN9925 ), juvenile male 405 mm DW, CSIRO H 7394-07 (tissue accession GN9924 ), juvenile male 427 mm DW, CSIRO H 7394-08 (tissue accession GN9926 ), female 621 mm DW, Da-xi , 13 Mar 2012 .

Remarks: Relatively common in the landings of coastal fisheries in Taiwan. Adult males sometimes develop short bony “horns” on anterior of orbits.

Conservation status: Vulnerable.

Aetomylaeus vespertilio ( Bleeker, 1852)

Ornate Eagle Ray / ḂĠĝḓŎẽ

Myliobatis vespertilio Bleeker, 1852: 85 . Holotype: RMNH 7460, 560 mm DW, Jakarta, Java, Indonesia.

Local synonymy: Aetobatus reticulatus: Teng, 1962: 252 , fig. 71; Chen & Chung, 1971: 49; Chen & Joung, 1993: 88; Chen & Yu, 1986: 163. Aetomylaeus vespertilio: Ho & Shao, 2011: 21 .

Taiwan voucher material: (1 specimen) TFRI 2911 (holotype of A. reticulatus ), 1052 mm DW, Keelung , Taiwan.

Remarks: Very few Taiwanese records of this species; northernmost point in the distribution of this species and possibly only extralimital records in Taiwanese waters. Aetobatus reticulatus Teng, 1962 described from Keelung is a junior synonym of this species.

Conservation status: Endangered.