Etmopterus Rafinesque, 1810

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 : 292-294

Genus Etmopterus Rafinesque, 1810

Lanternsharks / êḛé

Etmopterus Rafinesque, 1810a: 14 . Type species: Etmopterus aculeatus Rafinesque, 1810a , by monotypy.

Etmopterus brachyurus Smith & Radcliffe in Smith, 1912.

Shorttail lanternshark / Ñffiêợ

Etmopterus brachyurus Smith & Radcliffe in Smith, 1912: 679, fig. 2, pl. 52. Holotype: USNM 70257 , 227 + mm adult male, Albatross Sta. 5550, off Jolo Light , Jolo Island, Philippine Islands, 6°02'00" N, 120°44'40" E, 481 m depth.

Local synonymy: Etmopterus lucifer: Teng, 1959d: 73 , fig.; Teng, 1962: 163, fig. 41; Chen, 1963: 84, fig. 26; Shen & Ting, 1972: 15, fig. 2b; Shen, 1984a: 65, fig.; Chen & Joung, 1993: 39, pl. 2.6; Shao et al., 2008: 237 (name only); Shen & Wu, 2011: 84, fig. Etmopterus molleri: Joung & Chen, 1992: 22 , fig. 5; Etmopterus brachyurus: Schaaf da Silva & Ebert, 2006: 61 , fig. 5; Shao et al., 2008: 237; Shen & Wu, 2011: 84, fig.

Taiwan voucher material: (7 spec.) MNHN 2013-0409 (tissue accession GN10137 ), female 344 mm TL , HUMZ 213806 (tissue accession GN10141 ), female 353 mm TL , CSIRO H 7401-03 (tissue accession GN10142 ), female 250 mm TL, 22°26'N, 120°30'E, Dong-gang, 19 Mar 2012 ; CSIRO H 7402-01 (tissue accession GN10156 ), female 355 mm TL , HUMZ 213807 (tissue accession GN10157 ), female 228 mm TL , NMMB-P HO-271 (tissue accession GN10158 ), juvenile male 186 mm TL , HUMZ 213808 (tissue accession GN10159 ), female 157 mm TL, 22°26'N, 120°30'E, Dong-gang, 20 Mar 2012. See Schaaf-Da Silva & Ebert (2006) for list of additional examined .

Remarks: Etmopterus brachyurus has frequently been misidentified as E. lucifer in Taiwanese waters, but most figures of E. lucifer are actually of E. brachyurus , a common Etmopterus species that is frequently taken as bycatch in local bottom trawl fisheries.

Conservation status: Data Deficient.

Etmopterus burgessi Schaaf-DaSilva & Ebert, 2006

Broadnose lanternshark / Őkêḛ

Etmopterus burgessi Schaaf-DaSilva & Ebert, 2006: 53–64: 53, fig. 1, tab. 1. Holotype: CAS 223476, 355 mm TL, adult male, Ta-Shi fish market, Taiwan, 24°53'N, 122°01'E, collected by D.A. Ebert, 11 May 1988.

Local synonymy: Etmopterus molleri: Chen & Joung, 1993: 39 , pl. 2.7. Etmopterus burgessi : Schaaf-DaSilva & Ebert, 2006: 53, fig. 1. Etmopterus lucifer: Shen & Wu, 2011: 84 , ill.

Taiwan voucher material: (9 spec.) CSIRO H 7395-36 (tissue accession GN10017 ), adult male 343 mm TL , CSIRO H 7395-37 (tissue accession GN10018 ), juvenile male 245 mm TL , CSIRO H 7395-38 (tissue accession GN10019 ), female 207 mm TL , CSIRO H 7395-39 (tissue accession GN10020 ), juvenile male 214 mm TL , CSIRO H 7395-40 (tissue accession GN10021 ), female 216 mm TL, Da-xi , 15 Mar 2012 ; NMMB-P HO-289 , juvenile male 355 mm TL , NMMB-P HO-290 , female 227 mm TL , NMMB-P HO-291 , juvenile male 166 mm TL , NMMB-P HO-292 , juvenile male 196 mm TL, 22°32'N, 120°07'E, off Kaohsiung, 320 m depth, 15 Mar 2012. See Schaaf-DaSilva & Ebert (2006) for additional specimens .

Remarks: Etmopterus burgessi is not as common and appears to occur at greater depths than E. brachyurus ; this latter species appears to be most common in shallower depths relative to other Taiwanese etmopterids.

Conservation status: Data Deficient.

Etmopterus joungi Knuckey, Ebert & Burgess, 2011

Shortfin Smooth Lanternshark / ỡkêḛ

Etmopterus joungi Knuckey, Ebert & Burgess, 2011: 61 , fig. 1, tab. 1. Holotype: CAS 227957, 456 mm TL (435 mm TL after preservation), juvenile female, Da-xi fish market, Taiwan, 24° 53’N, 122° 01’E, collected by D.A. Ebert, 23 May 2005.

Local synonymy: Etmopertus pusillus: Chen & Yu, 1986: 112 ; Chen & Joung, 1993: 39, pl. 2.8 (possibly a different species); Shao et al. 2008: 237 (name only); Shen & Wu, 2011: 85, fig. Etmopterus joungi: Knuckey et al., 2011: 61 , fig. 1.

Taiwan voucher material: NMMB-P HO-253 (tissue accession GN10140 ), juvenile male 195 mm TL, Dong-gang, 19 Mar 2012 ; CSIRO H 7399-03 (tissue accession GN10145 ), female 386 mm TL , CSIRO H 7399-04 (tissue accession GN10146 ), female 332 mm TL , HUMZ 213802 (tissue accession GN10144 ), female 465 mm TL ,

HUMZ 213803 (tissue accession GN10147 ), female 301 mm TL , MNHN 2013-0410 (tissue accession GN10148 ), female 306 mm TL, Chang-bin , Taitung, 19 Mar 2012. See Kunckey et al. (2011) for additional specimens .

Remarks: Commonly collected from deep-water off eastern Taiwan. This recently described species is morphologically similar to and genetically indistinguishable from E. pusillus . DAE and NS are currently carrying out further research on this etmopterid subgroup.

Conservation status: Data Deficient.