This dataset contains the digitized treatments in Plazi based on the original journal article Knight-Jones, Phyllis, Darbyshire, Teresa, Petersen, Mary E., Tovar-Hernández, María Ana (2017): What is Pseudopotamilla reniformis (Sabellidae)? Comparisons of populations from Britain, Iceland and Canada with comments on Eudistylia and Schizobranchia. Zootaxa 4254 (2): 201-220, DOI: 10.11646/zootaxa.4254.2.3
Abstract
A neotype of Amphitrite Müller (1771) is established and re-described, using material collected in 2001 from near the type locality on the southwest coast of Iceland. We examined material from Iceland, Nova Scotia and Newfoundland, identified as Pseudopotamilla reniformis, showing scissiparity and commonly found in aggregations within kelp holdfasts or amongst encrusting fauna. By contrast, scissiparity has not been seen in a population recorded as P. reniformis from Wales (broadcast spawning is presumed, Chughtai & Knight-Jones 1988), which bores into limestone and that the present analysis shows to belong to a different species from P. reniformis. Sabella oculata Krøyer (1856, Norway) is a junior synonym of P. reniformis. Sabella aspersa Krøyer (1856, Greenland) and Sabella saxicava (Quatrefages, 1866, France) are re-instated and re-described in Pseudopotamilla. Pseudopotamilla saxicava (= Potamilla ehlersi Gravier, 1906) has a widespread distribution from Britain to the Arabian Gulf, Pseudopotamilla aspersa is found in Greenland and the distribution of P. reniformis is reduced to Iceland, northern Norway, Nova Scotia and Newfoundland. The genera Eudistylia Bush and Schizobranchia Bush are discussed in relation to Pseudopotamilla.
Key words: Fan worms, Sabella aspersa, Sabella saxicava, scissiparity, neotype, rock borings
Knight-Jones P, Darbyshire T, Petersen M E, Tovar-Hernández M A, plazi (2017). What is Pseudopotamilla reniformis (Sabellidae)? Comparisons of populations from Britain, Iceland and Canada with comments on Eudistylia and Schizobranchia. Plazi.org taxonomic treatments database. Checklist dataset https://doi.org/10.11646/zootaxa.4254.2.3 accessed via GBIF.org on 2026-06-14.
