Dasyatis cf. akajei (Muller & Henle, 1841)

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 : 359-361

Dasyatis cf. akajei

Red Stingray / ẤAEẽ

Trygon akajei Müller & Henle, 1841: 165 , pl. 54 (left figure). Lectotype: RMNH 4255a, female 146 mm DW, southwest coast of Japan; lectotype designation by Boeseman (1947).

Local synonymy: Dasyatis akajei : Jordan & Evermann, 1902: 318, fig. 2; Jordan & Richardson, 1909: 165, fig. 2; Fowler, 1941: 428; Chen, 1948: 2; Chen & Chung, 1971: 39, fig. 24; Chen & Yu, 1986: 160; Yang, 1981: 7, fig. 6; Nishida & Nakaya, 1990: 333; Chen & Joung, 1993: 86, pl. 12 (fig. 7); Shao et al., 1993: 120; Shao et al., 2008: 237; Chen et al., 2010: 2, fig. A; Shen & Wu, 2011: 101, fig.? Dasyatis navarrae: Fowler, 1941: 424 ; Chen & Chung, 1971: 40; Chen & Yu, 1986: 160; Nishida & Nakaya, 1990: 338; Chen & Joung, 1993: 85, pl. 12 (fig. 6); Shen & Wu, 2011: 101, fig.

Taiwan voucher material: (12 spec.) AMNH 258173 (tissue accession GN9934 ), juvenile male 257 mm DW, CSIRO H 7394-01 (tissue accession GN9936 ), female 251 mm DW, CSIRO H 7394-02 (tissue accession GN9937 ), juvenile male 225 mm DW, CSIRO H 7394-03 (tissue accession GN9938 ), juvenile male 173 mm DW, MNHN 2013-0452 (tissue accession GN9933 ), adult male 416 mm DW, CAS 236050 , juvenile male 275 mm DW, Da-xi, 13 Mar 2012 ; NMMB-P HO-276 , adult male 350 mm DW, Dong-gang, 21 Mar 2012 ; CSIRO H 7398-01 , juvenile male 265 mm DW, CSIRO H 7398-02 , juvenile male 220 mm DW, MNHN 2013-0453 , 215 mm DW, Dong-gang, 18 Mar 2012 ; CSIRO H 7401-01 (tail only) , CSIRO H 7401-02 (tail only), Dong-gang, 19 Mar 2012 .

Remarks: Illustration in Chen & Chung (1971) based on THUP 00837 (note: same registration number as D. akajei specimen); specimen whereabouts not known. Commonly landed as a bycatch species in demersal fisheries in Taiwanese waters. Drawing in Chen & Chung (1971) very closely resembles the D. kuhlii illustration (fig. 23), but the description does not. The conspecificty of Taiwanese and Japanese forms is questionable and is presently being evaluated for some of the present authors.

Conservation status: Near Threatened.

? Dasyatis microphthalmus Chen, 1948

Smalleye Stingray / ṁḊAEẽ

Dasyatis microphthalmus Chen, 1948:8 , fig. 6. Holotype: lost (see Manjaji, 2004 and Ho & Shao, 2011). Type locality: Keelung fish market.

Local synonymy: Dasyatis microphthalmus: Chen, 1948: 8 , fig. 6; Chen & Joung, 1993: 82; Manjaji-Matsumoto & Last, 2006: 295. Himantura microphthalma: Compagno & Roberts, 1982: 323 . Himantura microphthalmus: Ho & Shao, 2011: 20 .

Remarks: Manjaji-Matsumoto & Last (2006) confirmed the holotype of this species as being lost and considering no specimens of this species have been examined, considered D. microphthalmus as nomen dubium, but possibly conspecific with D. acutirostra Nishida & Nakaya, 1988 .

Conservation status: Not Evaluated.

Dasyatis ushiei ( Jordan & Hubbs, 1925)

Cow Stingray / ÎkAEẽ

Dasybatis ushiei Jordan & Hubbs, 1925: 114. Holotype: FMNH 59380 , male 367 mm DW, Mikawa Bay , Aichi Prefecture, Japan.

Local synonymy: Dasyatis ushiei: Teng, 1962: 232 , fig. 63; Chen & Chung, 1971: 36; Chen & Yu, 1986: 159. Dasyatic ushiei: Shao et al., 1993: 120 .

Taiwan voucher material: UF 148933 (tail only), adolescent female, Da-xi, 24 May 2005 .

Remarks: Only occasionally observed in fish markets in Taiwan. Conservation status: Data Deficient.

Dasyatis zugei ( Müller & Henle, 1841)

Sharpnose Stingray / ȀṘAEẽ

Trygon zugei Müller & Henle, 1841: 165 , pl. 54 (right figure). Lectotype: MNHN 1987-0152, male 137 mm DW, Macao, China; lectotype designation by Nishida & Nakaya (1988).

Local synonymy: Dasyatis cheni: Teng, 1962: 237 , fig. 65; Chen & Yu, 1986: 160. Dasyatis zugei: Chen, 1948: 2 , 7, fig. 5; Chen & Chung, 1971: 35, fig. 22; Chen & Yu, 1986: 159; Chen & Joung, 1993: 83, pl. 12 (fig. 1); Chen et al., 2010: 4, figs B, C; Ho & Shao, 2011: 20; Shen & Wu, 2011: 102, fig. Dasyatic zuguei: Shao et al., 1993: 120.

Taiwan voucher material: (10 spec.) CSIRO H 7394-04 (tissue accession GN9941 ), adult male 236 mm DW, CSIRO H 7394-05 (tissue accession GN9942 ), adult male 222 mm DW, MNHN 2013-0454 (tissue accession GN9939 ), female 279 mm DW, MNHN 2013-0455 (tissue accession GN9940 ), adult male 259 mm DW, Da-xi, 13 Mar 2012 ; CSIRO H 7395-07 (tissue accession GN9995 ), 167 mm DW, Da-xi, 14 Mar 2012 ; AMNH 258174 (tissue accession GN10079 ), juvenile male 181 mm DW, MNHN 2013-0456 (tissue accession GN10078 ), adult male 252 mm DW, Da-xi, 15 Mar 2012 ; NMMB-P HO-309 , HO-310 , HO-311 , Wu-chi, Taichong, 10 Apr 2012 .

Remarks: Drawing in Chen & Chung (1971) based on THUP 00837 (note: same registration number as D. akajei specimen). Commonly landed as a bycatch species of bottom trawl fisheries in Taiwanese waters. Dasyatis cheni Teng, 1962 , described from a specimen collected from Keelung, is a junior synonym of this species.

Conservation status: Near Threatened.