Centrophorus cf. lusitanicus, : Teng, 1958

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 : 289-290

Centrophorus cf. lusitanicus

Lowfin Gulper Shark / Ăḁäḛ

Local synonymy: Centrophorus lusitanicus: Teng, 1958: 25 , fig. 16 (Yilan, Kaohsiung); Teng, 1962: 155, fig. 39 (Tashi); Chen, 1963: 92; Yang, 1979: 205, fig. 2; Chen & Cheng, 1982: 143, fig. 1 (NMF 1); Chen & Yu, 1986: 112; Hsu & Joung, 2004: 184; Shen & Wu, 2011: 82, fig. Centrophorus niaukang: Chen & Joung 1993 : pl. 2 (fig. 1).

Taiwan voucher material: (10 spec.) FRIP 03628 (2 spec.), juvenile male 637 mm TL, adult male 719 mm TL ; NMMB-P uncatalogued, 736 mm TL, adult male, Da-xi; NMMB-P 14051 , juvenile female 408 mm TL, Chenggong, 2 Oct 2011 ; NMMB-P 15813 , female 905 mm TL, Cheng-gong, 2 Oct 2011 ; NMMB-P 15814 (tissue accession GN10190 ), adult male 745 mm TL, Cheng-gong, 18 Jul 2011 ; NMMB-P 15756 (tissue accession GN10189 ), adult male 720 mm TL, Cheng-gong, 30 Jul 2011 ; NMMB-P 15859, 761 mm TL, adult male, Chenggong, 29 Mar 2011 ; NMMB-P HO-353 , NMMB-P HO-354 , Da-xi, 14 Apr 2012 .

Remarks: Caught relatively frequently but in low numbers from bycatch landings of deepwater fisheries in western and southern Taiwan. Preliminary taxonomic investigation of this species reveals it represents a species complex. A detailed taxonomic investigation of this complex is underway by WTW and DAE; it is likely the species name will change for the Taiwanese species.

Conservation status: Vulnerable.

Centrophorus moluccensis Bleeker, 1860

Smallfin Gulper Shark / ŏuäḛ

Centrophorus moluccensis Bleeker, 1860a: 3 . Holotype: RMNH 7415 , late-term embryo 188 mm, Ambon, Indonesia.

Local synonymy: Centrophorus moluccensis: Chen & Joung, 1993: 37 , pl. 1 (fig. 10); Nakabo, 2002: 152; Hsu & Joung, 2004: 184; Shen & Wu, 2011: 83, fig. Centrophorus scalpratus: Chen & Cheng, 1982: 143 , fig. 4 (NMF 2); Chen & Yu, 1986: 112. Centrophorus uyato: Chen & Joung, 1993: 37 , pl. 2, fig. 2; Shen & Wu, 2011: 83, fig.

Taiwan voucher material: (3 spec.) CSIRO H 7403-01 (tissue accession GN10171 ), female 587 mm TL, 22°32'N, 120°07'E, off Kaohsiung, 320 m depth, 21 Mar 2012 ; NMMB-P HO-166 (tissue accession GN10053 ), female 947 mm TL, Da-xi , 14 Mar 2012 ; DAE 881305 , female 371 mm TL, Da-xi , 13 May 1988 .

Remarks: Drawing of C. scalpratus in Chen & Cheng (1982), but specimen location not known. Caught relatively frequently but in low numbers from bycatch landings of deepwater fisheries in eastern, western and southern Taiwan. This species likely represents a species complex and a detailed taxonomic investigation is currently underway by two of us ( WTW, DAE). Previously referred to as Centrophorus scalpratus McCulloch, 1915 , described from southeastern Australia, and currently considered a junior synonym of C. moluccensis . Shen & Wu (2011: 83) has a picture of a juvenile Centrophorus species that he refers to as C. uyato , but it appears to be a juvenile C. moluccensis .

Conservation status: Data Deficient.

Centrophorus squamosus ( Bonnaterre, 1788)

Leafscale Gulper Shark / Øöäḛ

Squalus squamosus Bonnaterre, 1788: 12 . Holotype: MNHN A-7829 (head only); no locality stated (probably eastern North Atlantic ).

Local synonymy: Centrophorus squamosus: Hsu & Joung, 2004: 185 , fig. 2.

Taiwan voucher material: (12 spec.) ASIZP 60842 , female 350 mm TL, Da-xi ; DAE 882904, 740 mm TL, adolescent male, Da-xi, 29 April 1988 ; CAS 234957 , juvenile male 374 mm TL, Da-xi, 21 May 2005 ; CSIRO H 5611–12, 425 mm TL, juvenile female, CSIRO H 5611–13 , juvenile male 436 mm TL, Da-xi, 1 Aug 2000 ; CSIRO H 6292–14 , juvenile female 407 mm TL, Da-xi, 21 May 2005 ; AMNH 258167 (tissue accession GN10049 ), female 404 mm TL , CSIRO H 7395–01 (tissue accession GN10050 ), juvenile male 374 mm TL , CSIRO H 7395– 02 , juvenile female 392 mm TL, juvenile female , HUMZ 213795 , juvenile male 427 mm TL, Da-xi, 14 Mar 2012 ; NMMB-P HO-349 , NMMB-P HO-351 , Da-xi, 5 May 2012 .

Remarks: Caught relatively frequently but in low numbers from bycatch landings of deepwater fisheries in western and southern Taiwan. Small juveniles are common in the bycatch of bottom trawl fisheries and can be easily misidentified with juveniles of C. granulosus ; the denticles differ between small juveniles of C. squamosus and C. granulosus , with the former having much larger denticles raised on tall, narrow pedicels (vs. denticles smaller and on low, broad pedicels). Occurs in deeper water than other Centrophorus species , one of us ( DAE, unpubl. data) examined a specimen in April 1988 landed at the Da-xi, but only recently has this species been reported from Taiwan waters ( Hsu & Joung, 2004). Its increased presence at fish markets in recent years may be indicative of fisheries extending into deeper waters than were traditionally fished.

Conservation status: Vulnerable.