Paradiopatra calliopae Arvanitidis & Koukouras 1997
- Dataset
- The identity of Paradiopatra bihanica (Annelida: Onuphidae) and reinstatement of P. calliopae
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Annelida
- class
- Polychaeta
- order
- Eunicida
- family
- Onuphidae
- genus
- Paradiopatra
- species
- Paradiopatra calliopae
diagnosis
Diagnosis. Based on specimens wider than 0.3 mm at chaetiger 10 excluding parapodia. Eyes present; palps reaching peristomium to chaetiger 1, lateral antennae reaching chaetigers 4 – 11, median antenna reaching chaetigers 3 – 7; ceratophores with 3 – 5 rings, without lateral projections. Peristomial cirri present. Anterior three pairs of parapodia modified; ventral cirri on first three chaetigers. Modified parapodia with bidentate pseudocompound hooks with moderately long pointed hoods; from chaetiger 4 replaced by limbate chaetae; lower limbate chaetae replaced from chaetiger 9 by subacicular hooks and pectinate chaetae with slightly oblique combs with 15 – 20 teeth, rarely as few as 10 – 14. Branchiae pectinate, starting as single filaments from chaetigers 10 – 14, with up to three filaments; absent from chaetiger 35 – 40. Tubes cylindrical with inner parchment-like layer and thick outer layer of mud particles, sometimes with some shell fragments incorporated.
discussion
Remarks. The redefinition of P. bihanica based on its holotype and original description indicated that the synonymisation of P. calliopae with the former species was unwarranted. Hence, the latter is here reinstated as the correct name for this common Mediterranean and eastern North Atlantic species. The specimens reported by Arias and Paxton (2015) from the Bay of Biscay were re-examined and the median antenna was found to be consistently shorter than the lateral ones, as had been reported by Martínez & Adarraga (2001) from Iberia. The collections reported by Budaeva & Fauchald (2011) from West Africa may represent a variant of P. calliopae or an undescribed species.
distribution
Distribution. Eastern Atlantic, Iberia, and the Mediterranean Sea; questionably West Africa. Thanks to Tarik Meziane (MNHN) for the loan of the holotype and two referees for their careful reading of the manuscript. This is a contribution from the Fauna Ibérica Project, subprojects “ Polychaeta IV ” (ref. CGL 2007 - 66786 - CO 8 - 02 / BOS) and “ Polychaeta V ” (ref. CGL 2010 - 22267 - CO 7 - 03 / BOS), and the Marine Observatory of Asturias (OMA).
materials_examined
Material examined. Three specimens (AM W. 47762), COCACE station C 1 (43.74 ° N – 05.69 ° W), 150 m depth, 80.04 % sand, 8.28 % silt, 11.68 % clay, Cantabrian Sea, Bay of Biscay, 0 1 Mar 1987; 13 specimens (AM W. 47763), COCACE station D 2 (43.81 ° N – 05.75 ° W), 161 m depth, 90.88 % sand, 3.46 % silt, 5.66 % clay, Cantabrian Sea, Bay of Biscay, 29 Jun 1987; 6 specimens (MNCN 16.01 / 16628), COCACE station D 2 (43.81 ° N – 05.75 ° W), 161 m depth, 90.88 % sand, 3.46 % silt, 5.66 % clay, Cantabrian Sea, Bay of Biscay, 29 Jun 1987; Several from the same locality for SEM studies; 4 specimens (MNCN 16.01 / 16629), N of San Sebastián (Basque Country), 43 º 22.59 ’ N – 02 º 03.70 ’ W – 43 º 22.16 N – 02 º 05.76 ’ W, 104 – 107 m depth, Cantabrian Sea, Bay of Biscay, 24 Jun 1991, coll. Fauna Ibérica II.