Prionospio from the coast of the Iberian Peninsula, with the description of two new species (Annelida, Spionidae)

Abstract

Five species of Prionospio Malmgren, 1867, each with four pairs of branchiae, are studied from coast of the Iberian Peninsula. Two of these species, Prionospiocristaventralissp. n. and P.paraparisp. n., are new to science, whereas P.caspersi Laubier, 1962, P.fallax Söderström, 1920, and P.ehlersi Fauvel, 1928 have been previously recorded. Prionospiocristaventralissp. n. is characterized by having ventral crests present on chaetigers XI–XIX, dorsal crests and low crests on chaetigers X–XXXIV, triangular neuropodial postchaetal lamellae with pointed ventral edges on chaetiger II, oval neuropodial lamellae on chaetiger III, digitiform pinnules on the posterior face of the first and fourth pairs, and branchial pairs II and III are triangular. Prionospioparaparisp. n. is characterized by having rounded neuropodial postchaetal lamellae on chaetiger I, digitiform pinnules on the posterior face of the first and fourth pairs, branchial pairs II and III are cirriform, low dorsal crests on chaetigers VIII–IX, and oval neuropodial lamellae with enlarged dorsal edges on chaetiger III. A key is given to all Prionospio species with four pairs of branchiae known from the Iberian Peninsula coastline.

<p class="ZootaxaTitle"><strong>New insights in the biogeographical distributions of two Spionidae (Annelida) from the NE Atlantic and Mediterranean French coasts</strong></p>

“…atlantic ocean. Cantabrian Sea, asturias, Spain (Delgado-blas et al, 2018), aquitanian coast, bay of biscay, France (this study, Fig. 1).…”

“…Habitat. Shallow waters from 24 to 34 m (Delgado-blas et al, 2018), in fine to coarse sand from 20 to 60 m (this study).…”

“…they inhabit both fresh and marine waters with silty, sandy and rocky bottoms, from shallow to deep waters, and from clean to polluted environments (blake et al 2017(blake et al , Martinez & adarraga 2019. In the bay of biscay and Mediterranean waters, new species are regularly recorded as progress is made in the systematics and biogeography of Spionidae (aguirrezabalaga & Ceberio 2005;Meißner 2005; Çinar et al 2015;lavesque et al 2015;radashevsky et al 2016;Surugiu 2016;bogantes et al 2018;Delgado-blas et al 2018;Delgado-blas et al 2019;radashevsky et al 2019).…”

“…the genera Prionospio Malmgren, 1867 and Spiophanes Grube, 1860 comprise 104 and 31 species, respectively, of which nine and five have been reported from French waters (rESoMar 2019; obIS 2019): P. caspersi laubier, 1962, P. cirrifera Wirén, 1883, P. dubia Day, 1961, P. elhersi Fauvel, 1928, P. fallax Söderström, 1920, P. multibranchiata berkeley, 1927, P. saldanha Day, 1961, P. sexoculata augener, 1918, P. steenstrupi Malmgren, 1867, and S. bombyx (Claparède, 1870, S. kroyeri Grube, 1860, S. duplex (Chamberlin, 1919), S. reyssi laubier, 1964and S. viriosus Meißner & hutchings, 2003. however, in recent surveys along the French coast of the bay of biscay two additional spionid species hitherto not reported from the French atlantic were collected: Prionospio cristaventralis Delgado-blas, Díaz-Díaz & viéitez, 2018 and Spiophanes afer Meißner, 2005. Prionospio cristaventralis was originally described from the Spanish atlantic coast of the bay of biscay (Delgado-blas et al 2018), while S. afer was described from waters adjacent to the african continent (Mediterranean Sea and South atlantic ocean) with the type locality in the Spanish Mediterranean Sea between Cape San antonio and the Port of valencia (Meißner, 2005) (Fig.…”

“…however, in recent surveys along the French coast of the bay of biscay two additional spionid species hitherto not reported from the French atlantic were collected: Prionospio cristaventralis Delgado-blas, Díaz-Díaz & viéitez, 2018 and Spiophanes afer Meißner, 2005. Prionospio cristaventralis was originally described from the Spanish atlantic coast of the bay of biscay (Delgado-blas et al 2018), while S. afer was described from waters adjacent to the african continent (Mediterranean Sea and South atlantic ocean) with the type locality in the Spanish Mediterranean Sea between Cape San antonio and the Port of valencia (Meißner, 2005) (Fig. 1).…”