Sabellid worms from the Patagonian Shelf and Humboldt Current System (Annelida, Sabellidae): Phyllis Knight-Jones’ and José María Orensanz’s collections

Abstract

The South American sabellid polychaete worm collections of Phyllis Knight-Jones and José María Orensanz were recovered, curated and specimens identified, comprising fourteen species grouped in nine genera. Five species belonging to the genera Chone Krøyer, 1856, Acromegalomma Gil and Nishi, 2017, Notaulax Tauber, 1879, Parasabella Bush, 1905, and Pseudopotamilla Bush, 1905, are described as new to science from the Patagonian Shelf (Argentina). Jasmineira crumenifera Hartmann-Schröder, 1986, Myxicola sulcata Ehlers, 1912, Parasabella columbi (Kinberg, 1867), Perkinsiana antarctica (Kinberg, 1867) and Perkinsiana assimilis (McIntosh, 1885) are redescribed and reported from several Patagonian localities. Three new combinations are made: Sabella tilosaula Schmarda, 1861, is transferred to Notaulax, Sabella magalhaensis Kinberg, 1867, to Perkinsiana Knight-Jones, 1983, and Potamilla platensis Hartman, 1953, to Pseudopotamilla. Potamethus littoralis Hartman, 1967, was synonymized with Perkinsiana magalhaensis. Notaulax tilosaula, Perkinsiana antarctica and P. magalhaensis are reported from the biogeographical subregion Humboldt Current System, whereas Bispira sp., Chone orensanzi sp. nov., Jasmineira crumenifera, Acromegalomma schwindtae sp. nov., M. sulcata, Notaulax salazari sp. nov., Parasabella columbi, P. yonowae sp. nov., Perkinsiana assimilis, Pseudopotamilla platensis, and P. knightjonesae sp. nov., are reported from the Patagonian Shelf.

Addition to the knowledge on Acromegalomma messapicum (Giangrande & Licciano, 2008) (Annelida: Sabellidae)

“…The genus Acromegalomma includes 37 species properly named from worldwide localities (Giangrande & Licciano 2008;Capa & Murray 2009;Tovar-Hernández & Carrera-Parra 2011;Mikac et al 2013;Giangrande et al 2015;Gil & Nishi 2017;Tovar-Hernández et al 2017). Several authors revised the taxa present in the Mediterranean basin (Giangrande & Licciano 2008;Mikac et al 2013;Giangrande et al 2015), where up to now eight species have been reported: Acromegalomma vesiculosum (Montagu, 1815), Acromegalomma lanigera (Grube, 1846), Acromegalomma vigilans (Claparède, 1869), Acromegalomma cfr.…”

Fan worms (Annelida: Sabellidae) from Indonesia collected by the Snellius II Expedition (1984) with descriptions of three new species and tube microstructure

“…Number of species : 39, after Gil & Nishi (2017) and Tovar-Hernández, de León-González & Bybee (2017) , including one new species described below.…”

“…Bispira .— Fitzhugh, 1989 : 72; Knight-Jones & Perkins, 1998 : 405–405; Capa, 2008 : 306–307; Faasse & Giangrande, 2012 : 592–593; Cepeda & Lattig, 2017 : 5–6; Tovar-Hernández, de León-González & Bybee, 2017 : 6; Capa et al, 2019 : 192.…”

“…Notaulax .— Perkins, 1984 : 327, 329; Fitzhugh, 1989 : 75; Tovar-Hernández, de León-González & Bybee, 2017 : 21; Capa et al, 2019 : 197–198.…”

“…Diagnoses to genus level are available in Perkins (1984) , Fitzhugh (1989) and Capa et al (2019) . The generic diagnosis was emended in order to include: (1) the presence of abdominal interramal eyespots (as reported in Tovar-Hernández, de León-González & Bybee (2017) ); (2) the presence of a high, peristomial ring as seen in N. pyrrohogaster and N. tenuitorques (see below) and also in N. bahamensis Perkins, 1984 and N. nudicollis ( Krøyer, 1856 ) ( Perkins, 1984 : figs 25E–F, 35E–F). (3) The difference between chaetae from anterior and posterior abdominal segments.…”