Staurosira magallanesica, a replacement name for Staurosira patagonica M.L.Garcia, Maidana, Ector & E.Morales, nom. illeg. (non Staurosira patagonica Cleve) (Bacillariophta, Staurosiraceae)

MAIDANA, N. I.; MORALES, E. A.; GARCÍA, MARÍA LUJÁN; ECTOR, LUC

Notulae algarum

AlgaeBase, Ryan Institute, National University of Ireland

Lugar: Galway; Año: 2018 vol. 51

2009-8987

The name Staurosira (bidens Heib[erg] var.?) patagonica Cleve was introduced by Cleve (1882?1881?: 13, pl. 16: fig. 13) for material collected from Sierra Famatina, Los Poterillos, Argentina.Subsequently, De Toni (1892: 690) transferred this species to Fragilaria patagonica (Cleve) DeToni, which is the current taxonomically accepted name.Staurosira patagonica M.L.Garcia, Maidana, Ector & E.Morales described a new species found inmaterial of Maar Magallanes, Patagonia, Argentina and other lakes in southern Patagonia. This newspecies was analysed in detail by light and electron microscopy and a comprehensive description isgiven in Garcia et al. (2017: 107, 114, figs 2-45). However, this name is a later homonym ofStaurosira patagonica Cleve, 1882. If we compare our species to Cleve?s illustration (Cleve 1882:pl. 16: fig. 13), we can easily differentiate the two by their general valve outline and morphometricdata. As pointed out by Garcia et al. (2017), re-examination of the type material of members of theFragilariaceae is needed to confirm identities, establish taxonomic boundaries and to facilitateidentification, and this is also the case with Staurosira patagonica CleveA new name is, however, required for Staurosira patagonica M.L.Garcia, Maidana, Ector &E.Morales as it is an illegitimate name:Staurosira magallanesica M.L.Garcia, Maidana, Ector & E.Morales nom. nov.Replaced synonym: Staurosira patagonica M.L.Garcia, Maidana, Ector & E.Morales NovaHedwigia, Beiheft 146: 107, 114, figs 2-45, 2017, nom illeg., non Staurosira patagonica Cleve1882 Öfversigt af Kongliga Svenska Vetenskaps-Akademiens Förhandlingar 38(10): 13, pl. 16: fig.13, 1882 ?1881?.Etymology: we have derived the specific epithet from the name of the paleolake Maar Magallaneswhere this new species was found for the first time by N.I. Maidana (Maidana & Corbella 1997).