Pseudopotamilla Bush, 1905,

Tovar-Hernández, María Ana, León-González, Jesús Ángel De & Bybee, David R., 2017, Sabellid worms from the Patagonian Shelf and Humboldt Current System (Annelida, Sabellidae): Phyllis Knight-Jones’ and José María Orensanz’s collections, Zootaxa 4283 (1), pp. 1-64: 47-48

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Pseudopotamilla Bush, 1905


Genus Pseudopotamilla Bush, 1905 

Remarks. Pseudopotamilla  is represented by some boring species in rocks and dead coral, and characterized by the presence of unpaired proximal compound radiolar eyes on the outer margins of radioles. The type species, Pseudopotamilla reniformis ( Bruguière, 1789)  , was originally described from Iceland and has been subsequently reported from the Caribbean Sea , European waters, American coasts of North and South Atlantic , Arctic, and North Pacific ( Kolbasova et al. 2013 and references therein). 

As shown in her poster presented during the 8th International Polychaeta Conference in Madrid, Knight-Jones, Darbyshire and Petersen were working on the designation of a neotype for Pseudopotamilla reniformis  and the resurrection of two species previously synonymized with P. reniformis ( Knight-Jones et al. 2004)  ; however, Knight-Jones and Petersen died before this work was completed, but the designation of a neotype is now under revision ( Knight-Jones et al. 2017). In addition, records of P. reniformis  from the Caribbean area were corrected as P. fitzhughi ( Tovar-Hernández & Salazar-Vallejo, 2006)  , and those from Australia were reassigned as Pseudopotamilla  sp. A and sp. B by Capa (2007), showing that some misidentifications of Pseudopotamilla  species have occurred. A full revision of Pseudopotamilla  is needed in order to confirm the distribution of P. reniformis  .

Pseudopotamilla  was emended by Capa (2007). The genus includes 16 species ( Capa et al. 2014), but only one was described from South America: P. polyophthalma Hartmann-Schröder, 1965  from Punta Lavapie (Central Chile) to 58 m depth. In the present paper, a new species of Pseudopotamilla  is described from Argentina, and Potamilla platensis Hartman, 1953  , is transferred to Pseudopotamilla  and redescribed. Pseudopotamilla platensis  is commonly found in translucent, chitinous tubes with an external layer of sand grains, from intertidal to 200 m depth, whereas P. knightjonesae  sp. nov., was collected intertidally in hard sediment matrix.












Pseudopotamilla Bush, 1905

Tovar-Hernández, María Ana, León-González, Jesús Ángel De & Bybee, David R. 2017

P. polyophthalma Hartmann-Schröder, 1965

Hartmann-Schroder 1965

Potamilla platensis

Hartman 1953