From editor or global species database
Type locality Intertidal, boring galleries perpendicular to the surface in Lithothamnion coralline algae on permanently wet rocks. Mesnil (1893: 643 footnote states: "Les matériaux de cette étude proviennent de Wimereux (Pas-de-Calais) et de l'anse Saint-Martin, près du cap de la Hague". Both localities are French coast English Channel but separated by at least 280 km. Anse Saint-Martin is a bay in Normandy at gazetteer estimate 49.71°, -01.88° and Wimereux is a beach town at the east end of the Channel at 50.77, 1.61. However, later Mesnil (1896: 195) only mentions l'anse St-Martin by name for an origin site for P. giardi . This is the type location in Radashevsky & Petersen (2005). However, Radashevsky et al (2022) state that "we reset Wimereux (Nord-Pas-de-Calais, France) as the type locality of P. giardi", apparently because Giard was the founder of a marine station at Wimereux (the reasoning is not clearly stated). Although not currently of great significance this restriction of type location is not supported by Mesnil's text. [details]
Type material Type material not located. Radashevsky & Petersen (2005) reported finding at University of Copenhagen (ZMUC) Polydora giardi specimens collected by Mesnil and accessioned on 22/06/1896, currently catalogued as ZMUCPOL-653. Radashevsky et al (2022: 20 of 32) suggest these should be regarded as syntypes. However, there is no evidence the specimens were collected before the 1893 publication of the Polydora giardi name, and the French Channel coast collection site is not known. [details]