An annotated checklist of the chondrichthyans of South Africa Author Ebert, David A. Author Wintner, Sabine P. 0000-0001-7350-5999 Author Kyne, Peter M. 0000-0003-4494-2625 debert@mlml.calstate.edu text Zootaxa 2021 2021-03-17 4947 1 1 127 journal article 7365 10.11646/zootaxa.4947.1.1 74dc998a-dc7a-4b02-b43c-a2064c9c6dc2 1175-5326 4614567 7F3B4794-65CF-4691-A330-78A423F2606F Hydrolagus erithacus Walovich, Ebert, & Kemper, 2017 Robin’s Ghostshark Hydrolagus erithacus Walovich, Ebert, & Kemper, 2017: 511 , figs. 1–2. Holotype : SAIAB 200578 . Type locality: Discovery Seamount, Southeast Atlantic Ocean, 43°46'S , 01°21'E . Local synonymy : Hydrolagus sp. nov. : Compagno, 1999: 120 . Hydrolagus erithacus : Walovich et al ., 2017: 511 , figs. 1–2. South Africa voucher material : Holotype : SAIAB 200578 . Paratypes (8): SAIAB 200579 , SAM 34432, SAM 34434, SAM 34723, SAM 34724, SAM 35442, SAM 35446, SAM 35447 . South African distribution : Known from the Southeast Atlantic and Southwest Indian oceans, including near Marion Island and Prince Edward Island within the South African exclusive economic zone. Remarks : Hydrolagus erithacus is the largest known ghostshark to date, exceeding that of H. trolli in length. The species was thought to be similar to what is now known to be H. affinis in South African waters. Presently, it is known from several seamounts in the southeast Atlantic and southwest Indian oceans, but it may prove to be much wider ranging in the Southern Ocean. Conservation status : DD (2020).