Navalis  edetanus  a  new  species  of  the  genus  Navalis  Quiñonero-Salgado  &  Rolán,  2017  is  described  for  the  province of València (Spain). The new species can be easily differentiated by its morphology from the other single known species of the genus.Keywords: Gastropoda, Hydrobiidae, Navalis, València, Spain, new species.Es descriu Navalis edetanus, nova espècie del gènere Navalis Quiñonero-Salgado & Rolán, 2017 en la província de València (Espanya). La nova espècie es pot diferenciar fàcilment per la seua morfologia de l’altra espècie coneguda del gènere

Alonso, Álvaro

Quiñonero Salgado, Sergio

Rolán-Alvarez, Emilio

Talaván-Serna, Julio

English

Quiñonero-Salgado, Sergio

Repositori Institucional de la Universitat Jaume I

A new species of the genus Navalis Quiñonero-Salgado & Rolán, 2017 (Gastropoda: Hydrobiidae) from SpainJulio Talaván-Serna 1, Sergio Quiñonero-Salgado 2*, Álvaro Alonso 3, Emilio Rolán 41 C/ Clavel 4, 20º, 44396 Caudé, Teruel, Spain.2 Associació Catalana de Malacologia, Museu Blau, Plaça Leonardo da Vinci 4-5, 08019 Barcelona, Spain. * Autor corresponsal: sergioqs85@hotmail.com3 C/Infiesto 7, 6º J, 33207 Gijón Asturias, Spain.4. Museo de Historia Natural, Parque Vista Alegre, Campus norte, Universidad de Santiago, 15782 Santiago de Compostela, SpainRebut el 10.03.2021. Acceptat el 11.05.2021.Navalis edetanus a new species of the genus Navalis Quiñonero-Salgado & Rolán, 2017 is described for the province of València (Spain). The new species can be easily differentiated by its morphology from the other single known species of the genus.Keywords: Gastropoda, Hydrobiidae, Navalis, València, Spain, new species.Nova espècie del gènere Navalis Quiñonero-Salgado & Rolán, 2017 per a EspanyaEs descriu Navalis edetanus, nova espècie del gènere Navalis Quiñonero-Salgado & Rolán, 2017 en la província de València (Espanya). La nova espècie es pot diferenciar fàcilment per la seua morfologia de l’altra espècie coneguda del gènere.Mots clau: Gastropoda, Hydrobiidae, Navalis, València, Espanya, espècie nova.The family Hydrobiidae Stimpson, 1865 includes a number of genera in the Spanish territory of the Ibe-rian Peninsula, but only a few of them have the so called valvatiform shape. Among those, we can cite: Deganta Arconada & Ramos, 2019, in the north of the Peninsula; Islamia Radoman, 1973, in the north, center, south and east; Corbellaria Girardi & Boeters, 2012 in the center; Arganiella Giusti & Pezzoli, 1980 in the southwest; Boetersiella Arconada & Ramos, 2001, Iberhoratia Arconada & Ramos, 2007 and Milesiana Arconada & Ramos, 2006, in the south; Chondrobasis Arconada & Ramos, 2001, Spathogyna Arconada & Ramos, 2002, Josefus Arconada & Ramos, 2006, Tarraconia Ramos & Arconada, 2000 and Navalis Qui-ñonero-Salgado & Rolán, 2017 in the east (Arconada & Ramos, 2001, 2002, 2006, 2007; Girardi & Boeters, 2012; Quiñonero-Salgado & Rolán, 2017; Ruiz-Cobo et al. 2018, Delicado et al. 2019).The genus Navalis Quiñonero-Salgado & Rolán, 2017 is characterized by small sized valvatiform shells, easily distinguishable from all the other known genera of the family Hydrobiidae due to its prominent keel. It has a stygobiotic habitat, and at present there is no knowledge on its body parts. The only described spe-cies, Navalis perforatus Quiñonero-Salgado & Rolán, 2017, is only known from two localities in the province of Castelló (Quiñonero-Salgado & Rolán, 2017).In the present paper, a new species of the genus Navalis is described, being the first species of this genus in the province of València.Material and methodsThe type locality was visited on 2020/09/16, with the pertinent permits for sampling. The study mate-rial was obtained from sediments collected in the upwelling area, where the water directly leaves the spring, down to 1 m deep, with the help of a home-made concave recipient, attached to an extensible long stick. After cleaning and drying out the sediment, it was filtered through successive sieves of 2.0, 1.0 and 0.5 mm mesh to obtain aquatic micromolluscs. The material obtained was examined with the help of a stereomicroscope for its identification, and cleaned with water by using a small brush. No live specimens were collected, so the study was carried out only with empty shells. Photographs of the specimens were done with a trinocular stereomicroscope Nexius Zoom NZ 1903-S coupled to a Euromex CMEX-10PRO camera. Subsequently, some shells were processed in alu-minum stubs for electronic pictures with an electronic NEMUS núm. 11. 2021, pàg. 102-106102Articles NEMUS revista de l’ateneu de naturaQuanta-200 microscope in order to examine details of microsculpture.AbbreviationsMCNB: Museu de Ciències Naturals de BarcelonaMNCN: Museo Nacional de Ciencias Naturales de MadridCSQS: Collection of Sergio Quiñonero-SalgadoCJT: Collection of Julio TalavánResultsSystematicsFamily HYDROBIIDAE Stimpson, 1865Genus Navalis Quiñonero-Salgado & Rolán, 2017Type species: Navalis perforatus Quiñonero-Salgado & Rolán, 2017Navalis edetanus sp. n(Figs. 1-2)FIGURE 1: SEM photographs of Navalis edetanus sp. n. from the type locality. A, B: shell C, D: detail of the protoconch microsculpture.Microfotografies de microscopi electrònic de Navalis edetanus sp. n de la localitat tipus. A, B: closca. C, D: detall de la microescultura de la protoconquilla.ADCB500 µm 500 µm50 µm200 µm103NEMUS núm. 11. 2021, pàg. 102-106Articles J. Talabán-Serna et al. A new species of the genus Navalis (Gastropoda: Hydrobiidae) from SpainType material: Holotype (Fig.2) in MCNB, MZB 2021-0468, paratypes: 1 s in MNCN 15.05/200132, 3 shells CSQS, 3 shells CJT.Type locality: font de Sant Vicent, Llíria. Pro-vince of València, Comunitat Valenciana. Spain. (30SYJ07969182). 175m. (Figs. 4-5).This spring has a calcareous nature and is located in a municipal park in the north of Llíria municipality. It is composed of a number of upwellings of different sizes, spread over hundreds of meters. The water coming out directly from the spring forms a small pond.Etymology: The name refers to the historical Iberian-Roman town of “Edeta”, whose archaeological remains are at the “Tossal de Sant Miquel”, near the contemporary city of Llíria (Valencia). At that time, it was the capital of the “Edetania” region, comprising most of the present northern part of València and sou-thern part of Castelló provinces.Description: Shells of small size, very fragile, valvati-form, oval shaped, depressed, less convex in the upper whorls than the lower part. Sizes range from 0.47 to 0.76 mm high, and 0.96 to 1.35 mm wide. It has 3 to 3 1/3 spire whorls, a bit globose, the last one represen-ting one third or more of the total width of the shell. Freshly collected specimens are translucid. Sutures are shallow but well defined. Slightly prominent apex. Protoconch presents a microsculpture formed by microperforations, irregularly displayed. Teleoconch showing isolated, narrow growth lines, more abundant at the end of the shell.Oval umbilicus, very wide, representing one third of shell diameter, very perspective, allowing to see the whole spiral rolling through it. The presence of a strong angularity or keel in the lower part of the shell is quite characteristic, delimitating the umbilical contour, and being quite conspicuous in the last whorl. Ovoid aper-ture, 0.40 to 0.48 mm high and 0.40-0.61 mm wide, FIGURE 2. Holotype of Navalis edetanus sp. n. Scale bar: 1 mm.Holotip de Navalis edetanus sp. n. Barra d’escala: 1 mm.TABLE 1. Measurements of Navalis edetanus sp. n. shells. SH: shell height. SW: shell diameter. BWH: last whorl height. PH: aperture height. PW: aperture width. See also Fig. 3.Mesures de la conquilla de Navalis edetanus sp. n. SH: alçada. SW: diàmetre. BWH: alçada de l’última volta. PH: alçada de l’obertura. PW: amplada de l’obertura. Cal veure també la Fig. 3.Navalis edetanus SH SW BWH PH PW(n=13) HOLOTYPE 0.69 1.17 0.64 0.44 0.52min 0.47 0.96 0.52 0.40 0.40max 0.76 1.35 0.72 0.48 0.61mean 0.63 1,15 0.61 0.44 0.50st.dev. 0.091 0.018 0.066 0.030 0.058J. Talabán-Serna et al. A new species of the genus Navalis (Gastropoda: Hydrobiidae) from Spain104 NEMUS núm. 11. 2021, pàg. 102-106ArticlesFIGURE 3. Shell measurements of Navalis edetanus sp. n. and Navalis perforatus SH: shell height. SW: shell diameter. BWL: last whorl height. PH: aperture height. PW: aperture width.Dimensions de la conquilla de Navalis edetanus sp. n. i Navalis perforatus SH: alçada de la conquilla. SW: diàmetre de la conquilla. BWL: alçada de l’última volta PH: alçada de l’obertura. PW: amplada de l’obertura.FIGURE 4. Font de Sant Vicent, type locality of Navalis edetanus sp. n.Font de Sant Vicent, localitat tipus de Navalis edetanus sp. n.FIGURE 5. Map of Castelló and València provinces showing the known distribution range of the Navalis spp.Mapa de les províncies de Castelló i València que mostra el rang de distribució de Navalis spp.105NEMUS núm. 11. 2021, pàg. 102-106Articles J. Talabán-Serna et al. A new species of the genus Navalis (Gastropoda: Hydrobiidae) from Spainrounded in the lower margin, and more angular in the upper margin. Very slim peristome, finely thickened in the inner margin, and slightly expanded, especially on the columellar side.Dimensions: see Table 1, Fig. 3Habitat: Stygobiotic. Shells were washed out of the spring by water flow, likely after sudden increases in water flow.Distribution: Only known from the type locality (Figs. 4-5).Remarks: Navalis edetanus sp. n. shows the concho-logical main trait of the genus Navalis, that is, the pre-sence of a marked angle or keel in the lower part of the shell that forms the umbilical margin. The anatomy of Navalis perforatus, type species of the genus, is still unknown.Navalis edetanus sp.n is easily distinguished from N. perforatus by having a more expanded, and less globose and compact shell. The upper part is less fla-ttened, while the lower part is less globose and pro-minent. Spiral whorls are more rounded, without an angled outline. Aperture is less ovate, and peristome is finer. Umbilicus is smaller, less rounded and less pers-pective. The angularity around the umbilicus in the lower part of the shell is much less developed than in Navalis perforatus, and barely protrudes on the lower contour of the shell, giving an overall less globose aspect to the lower half of the shell.ConclusionsWith the description of Navalis edetanus sp.n. for the province of València, the number of known species of the genus is raised to two. There are enough concho-logical traits for differentiating both species. Since no live specimens were collected, the generic assignment is based only on conchological traits, while waiting for genetic or anatomic studies that should confirm its taxonomic status. The anatomy of the genus is comple-tely unknown at this point.Due to the reduced geographic range of distribution, restricted to the type locality, and the fragility of this ecosystem, Navalis edetanus sp.n seems a highly vul-nerable species, so we advocate for some protection status for both the species and its habitat.ReferencesArconada, B. & Ramos, M. A. 2001. New data on Hydrobiidae systematics: two new genera from the Iberian Peninsula. Journal of Natural History, 35: 949–984.Arconada, B. & Ramos, M. A. 2002. Spathogyna, a new genus for Valvata (? Tropidina) fezi Altimira, 1960 from eastern Spain: another case of pseudohermaphroditism in the Hydrobiidae (Gastropoda). Journal of Molluscan Studies, 68: 319–327.Arconada, B. & Ramos, M. A. 2006. Revision of the genus Islamia Radoman, 1973 (Gastropoda, Caenogastropoda, Hydrobiidae), on the Iberian Peninsula and description of two new genera and three new species. Malacologia, 48: 77–132.Arconada, B. & Ramos, M. A. 2007. Arganiella wolfi, new combination for Boetersiella wolfi (Boeters & Gloer, 2007). Graellsia, 63: 367–369.Delicado, D., Arconada, B., Aguado, A. & Ramos, M. A. 2019. Multilocus phylogeny, species delimitation and biogeography of Iberian valvatiform springsnails (Caenogastropoda: Hydrobiidae), with the description of a new genus. Zoological Journal of the Linnean Society, 186: 892-914.Girardi, H. & Boeters, H. D. 2012. Corbellaria celtiberica gen. et sp. nov. (Gastropoda: Hydrobiidae), mollusque valvatiforme stygobie de la province de Soria (Péninsule Ibérique). Spira, 4: 149–160.Quiñonero-Salgado, S. & Rolán, E. 2017. Navalis perforatus a new genus and new species (Gastropoda, Hydrobiidae) from Spain. Nemus, 7: 7-11.Ruiz Cobo J., Alonso, Á., Quiñonero-Salgado, S. & Rolán, E. 2018. Two new species of the genus Islamia Radoman, 1973 (Gastropoda: Hydrobiidae) from the north of Spain. Nemus, 8: 85-93.Acknowledgments: We want to thank the environment technicians of Llíria municipality for the facilities given to obtain the permits for sampling the Sant Vicent spring, to Carlos E. Prieto for elaborating Figure 5, to Joaquín Lopez-Soriano for language revision, to Jordi Cadevall for a critical revision of the manuscript. Our thanks also to Inés Pazos from the Centro de Apoyo Científico y Tecnológico a la Investigación (CACTI) at Universidad de Vigo for the SEM picturesJ. Talabán-Serna et al. A new species of the genus Navalis (Gastropoda: Hydrobiidae) from Spain106 NEMUS núm. 11. 2021, pàg. 102-106Articles

Nova espècie del gènere Navalis Quiñonero-Salgado & Rolán, 2017 per a Espanya

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Nova espècie del gènere Navalis Quiñonero-Salgado & Rolán, 2017 per a Espanya

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