A new species of the genus Spiralix is described from the Pobla de Benifassà (Spain), which can be conchologically differentiated from the known congeneric species by having a smaller number of whorls and a wider aperture.Es descriu una espècie nova del gènere Spiralix de la Pobla de Benifassà (Espanya), la qual es diferencia conquiològicament de les altres espècies del gènere conegudes per tenir poques voltes i una obertura ampla

Alonso Suárez, Álvaro

Quiñonero Salgado, Sergio

Rolán-Alvarez, Emilio

English

Quiñonero-Salgado, Sergio

Repositori Institucional de la Universitat Jaume I

NEMUSnúm. 9. 2019NEMUS núm. 9. 2019, pàg. 112 - 117112Spiralix tuba (Gastropoda: Moitessieriidae) a new species from SpainSergio Quiñonero-Salgado1*, Álvaro Alonso Suárez2 & Emilio Rolán31. Associació Catalana de Malacologia, Museu Blau, plaça Leonardo da Vinci 4-5, 08019 Barcelona, Spain.2 C/Infiesto 7, 6º J, 33207 Gijón Asturias, Spain.3 Museo de Historia Natural de la Universidad de Santiago, Campus Norte, Parque Vista Alegre, 15782. Santiago de Compostela, Spain.*Autor corresponsal: sergioqs85@hotmail.comA new species of the genus Spiralix is described from the Pobla de Benifassà (Spain), which can be concholo-gically differentiated from the known congeneric species by having a smaller number of whorls and a wider aperture.Keywords: Gastropoda, Moitessieriidae,  Spiralix, new species.Spiralix tuba (Gastropoda: Moitessieriidae) espècie nova d’EspanyaEs descriu una espècie nova del gènere Spiralix de la Pobla de Benifassà (Espanya), la qual es diferencia con-quiològicament de les altres espècies del gènere conegudes per tenir poques voltes i una obertura ampla.Mots clau: Gastropoda, Moitessieriidae, Spiralix, espècie nova.The family Moitessieriidae Bourguignat, 1863 includes small sized freshwater gastropods, mainly from stygobiotic habitats. In Spain, it is represented by five genera: Moitessieria Bourguignat, 1863, Palaospeum Boeters, 2003, Baldufa Alba, Tarruella, Prats, Guillén & Corbella, 2010, Sardopaladilhia Man-ganelli, Bodon, Cianfanelli, Talenti & Giusti, 1998, and Spiralix Boeters, 1972. It is distinguished from Hydrobiidae Stimpson, 1865 by anatomical characters (Boeters & Gittenberger, 1990).The genus Spiralix is represented in Spain by twelve species and subspecies. In the Levantine area of the Iberian Peninsula, it is represented by Spiralix gloriae (Rolán & Martínez-Ortí, 2003), S. valenciana valenciana Boeters, 2003, S. valenciana castellonica Boeters, 2003, S. pequenoensis Boeters, 2003 and S. calida Corbella et al., 2014 (Boeters, 2003; Rolán & Martínez-Ortí, 2003; Corbella et al., 2014). In the northeast (Basque Country, Castilla and León, Cantabria and Asturias) there are seven des-cribed species, all presently included in the subgenus Burgosia Boeters, 2003: Spiralix burgensis Boeters, 2003, S. affinitatis Boeters, 2003, S. septentrionalis (Rolán & Ramos, 1995), S. asturica Quiñonero-Sal-gado et al., 2017, S. clarae Quiñonero-Salgado et al., 2017, S. mieraensis Quiñonero-Salgado et al., 2017 and S. vetusta Quiñonero-Salgado et al., 2018. (Rolán & Ramos, 1995; Boeters, 2003; Rolán & Arconada, 2003; Quiñonero-Salgado et al., 2017, 2018), whose taxo-nomy has experienced recent revisions.In the present work, a new species of the genus Spiralix is described for the east of Spain and which can be differentiated from other congeneric species by a series of conchological characters.Material and methodsShells of the newly described species were collected in sediment from the font dels Rossegadors, in the municipality of la Pobla de Benifassà (Castelló pro-vince). After cleaning and drying the sediments, sieves of 2 mm, 1 mm and 0,5 mm mesh size were used for shell sorting. Shells were finally separated under a stereomicroscope for their determination, and there-after cleaned with water with the help of a small brush. Given its strict stygobiotic habitat and the difficult access, it was very complicated to find living speci-mens, so only empty shells were used for this study.Though genitalia study or even DNA analysis had become increasingly common for the description of new species, the collection of live samples of strictly stigobiotic gastropods is extremely rare and a question of luck, so most taxonomic work still rely on drifted 113NEMUS núm. 9. 2019, pàg. 112 - 117S. Quiñonero-Salgado,  Á. Alonso & E. RolánSpiralix tuba (Gastropoda:Moitessieriidae) a new species from Spainempty shells found at surgences. Abbreviations: MZB: Museu de Ciècies Natu-rals de Barcelona; ZUPV: colección de Fauna caver-nícola (Departamento de Zoologia) de la Univer-sidad del País-Vasco-Euskal Herriko Unibertsitatea, Bilbao, Spain; SEM: Scanning Electron Microscopy; CQS: collection Quiñonero-Salgado; CAA: collection Álvaro Alonso; s: shellResultsFamily: Moitessieriidae Bourguignat, 1863Genus Spiralix Boeters, 1972Type species: Spiralix rayi (Locard, 1883) by original designation.Spiralix tuba sp. n. (Figs. 1 i 2)Type material: (Fig. 2) Holotype: MZB-20190012. Paratypes: 2 s MZB-20190013, 5 s ZUPV-5385, 3 s CAA, 9 s in CQS.Type locality: font dels Rossegadors (Fig. 4), la Pobla de Benifassà, Castelló, Comunitat Valenciana, Spain (31TBF667059, 450 m). This spring is located near the river Sénia, about 800 m from the Ulldecona reservoir dam.Etymology: the specific name refers to the Latin word “tuba”, a primitive Roman trumpet whose expanded end (bell) strongly resembles the opening of the new species.Description: shell of small size, brittle, not quite ele-vated, with maximum height of 1,77 mm and minimum of 1,46 mm. Diameter from 0,95 to 1,23 mm. It has four spire whorls. Deep sutures. Freshly collected spe-cimens are shiny and translucent. Protoconch with microsculpture formed by multiple rounded or irre-gularly ovoidal depressions, showing occasional ele-vations between them (Fig. 1C-F). The teleoconch microsculpture is formed by spiral striation with irre-gular, shallow grooves, particularly evident under the suture (Fig. 1G), but fading until not visible when dis-tant from the suture, except near or between growth lines, which are slightly prosocline (Fig. 1H). Last whorl is ascendant towards the aperture. Aperture with ovoidal shape, quite widened, ranging from 0,73 to 0,95 mm in height and 0,69 to 0,96 mm in width. Peristome thick and expanded, especially towards the columella, covering the umbilicus, reduced to a fissure.Dimensions: See table 1. Habitat: Stygobiotic.Distribution: Only known from the type locality (Figs. 4 i 5).Remarks: It is clearly distinguishable from the other congeneric species by these characters:Spiralix valenciana castellonica has a taller and narrower shell, higher number of whorls narrower aperture and less expanded lip; S. pequenoensis, S. calida, and S. gloriae also have larger number of whorls and a more subcylindrical shape.Discussion and conclusionsSpiralix tuba sp. n. is described from the province of Castelló, where four other species of the genus are known: S. valenciana castellonica, S. pequenoensis, S. gloriae and S. calida. The newly described species has close similarities with all the other species of the genus Spiralix, all having a conico-cylindrical to subcylindrical shape, a TABLE 1. Measurements of Spiralix tuba sp. n. and S. valenciana castellonica 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 Spiralix tuba sp. n. i S. valenciana castellonica. 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.SH SW BWH PH PWSpiralix tuba n. sp. (n=17)Holotype 1,56 1,04 1,11 0,81 0,71min. 1,46 0,95 1,09 0,73 0,69max. 1,77 1,23 1,33 0,95 0,96mean 1,61 1,09 1,21 0,85 0,79st. dev. 0,079 0,071 0,069 0,059 0,064S. v. castellonica (n=12)min. 1,76 0,82 0,82 0,64 0,55max. 2,54 2,54 1,37 1,37 2,54mean 2,18 0,98 1,22 0,76 0,65st. dev. 0,205 0,072 0,082 0,068 0,067114 NEMUS núm. 9. 2019, pàg. 112 - 117 Spiralix tuba (Gastropoda:Moitessieriidae) a new species from SpainS. Quiñonero-Salgado,  Á. Alonso & E. RolánFIGURE 1. Paratype of Spiralix tuba sp. n. A:  Apertural view; B: Protoconch; C-F: detail of the protoconch microsculpture; G-H: detail of the teleoconch microsculpture.Paratip de Spiralix tuba sp. n. A: vista apertural; B: protoconquilla; C-F: detall de la microescultura de la protoconquilla; G-H: detall de la microescultura de la teleoconquilla.A BDCEFG H115NEMUS núm. 9. 2019, pàg. 112 - 117S. Quiñonero-Salgado,  Á. Alonso & E. RolánSpiralix tuba (Gastropoda:Moitessieriidae) a new species from SpainFIGURE 2. A: holotype; B-G: paratypes.A: holotip; B-G: paratips.AB DCE F G116 NEMUS núm. 9. 2019, pàg. 112 - 117 Spiralix tuba (Gastropoda:Moitessieriidae) a new species from SpainS. Quiñonero-Salgado,  Á. Alonso & E. Rolánhigh whorl number, and clearly thickened peristome. It is included in this genus by the shape and peristome characteristics but it is worth noticing that it also has some differences with all the other species from Spain such a smaller number of whorls. While all Spiralix species generally have scarce ornamentation in the teleoconch and a slightly more evident ornamentation in the protoconch, the newly described species has a stronger protoconch ornamentation, similar to that observed in the subgenus Burgosia (see Quiñonero-Salgado et al., 2017, 2018), but it lacks the cuneiform irregular marks characteristic of the teleoconch of this subgenus.It can also be differentiated from representatives of other genera, such as Palaospeum, by having a less conical shape and narrower aperture; from Moitessieria and Baldufa by lacking the well-defined spiral orna-mentation; Sardopaladilhia by not having the elevated spire, continuous and everted peristome and a spiral microsculpture composed of dots and lines. Regarding its conservation status, since no popula-tions are known other than the type locality, the spe-cies should be conservatively protected and included in the Red List of endangered invertebrates of Spain and any damage to the aquifer, including any type of contamination, should be avoided .FIGURE 3. Shell mea-surements of Spiralix tuba sp. n. and S. valenciana castello-nica. SH: shell height. SW: shell diameter. BWL: last whorl height. PH: aperture height. PW: aperture width. Dimensions de la conquilla de Spiralix tuba sp. n. i  S. valen-ciana castellonica.  SH: alçada. SW: diàmetre. BWL: PH: alçada de l’obertura. PW: amplada de l’obertura.FIGURE 4. Font dels Rossegadors, type locality of Spiralix tuba sp. n.Font dels Rossegadors, localitat tipus de Spiralix tuba sp. n.FIGURE 5. Map of the NE of Spain showing the known distribution range of some species of the genus Spiralix.Mapa del NE d’Espanya mostrant el rang de distribució de les espècies del gènere Spiralix.117NEMUS núm. 9. 2019, pàg. 112 - 117S. Quiñonero-Salgado,  Á. Alonso & E. RolánSpiralix tuba (Gastropoda:Moitessieriidae) a new species from SpainBibliographyBoeters, H.D. & Gittenberger, E. 1990. Once more on the Moitessieriidae (Gastropoda Prosobranchia), with the description of Clameia brooki gen. et spec. nov. Basteria, 54, (1-3): 123-129.Boeters, H.D. 2003. Supplementary notes on Moitessieriidae and Hydrobiidae from the Iberian Peninsula (Gastropoda, Caenogastropoda). Basteria 67: 1-41. Corbella, J. Guillén, G. Prats, LL. Tarruella , A. & Alba, D. 2014. Spiralix calida sp. nov. (Gastropoda: Moitessieriidae), una nova espècie de gastròpode estigobi de Toga (l’Alt Millars, País Valèncià, Espanya). Spira, 5: 111-120.Rolán, E. & Ramos, M.A. 1995. Una nueva especie de Hydrobiidae (Mollusca, Prosobranchia) del norte de la Península Ibérica. Iberus, 13 (2): 119-127.Rolán, E. & Arconada, B. 2003. Nueva información sobre Paladilhiopsis septentrionalis (Molusca, Prosobranchia). Iberus, 21 (2): 141-143.Rolán, E. & Martínez-Ortí, A. 2003. Nuevas especies de la familia Hydrobiidae (Mollusca: Orthogastropoda) de la Comunidad Valenciana (España). Iberus, 21 (1): 191-206.Quiñonero-Salgado, S., Ruiz Cobo, J & Rolán, E. 2017. Three new species of Spiralix (Burgosia) (Gastropoda, Moitessieriidae). Iberus, 35(1): 59-70.Quiñonero-Salgado, S., Alonso, A. & Rolán, E. 2018. Spiralix (Burgosia) vetusta (Gastropoda: Moitessieriidae) a new species from Asturias (North of Spain). NEMUS 8: 95-100.Acknowledgements. To Jordi Corbella Alonso for the loan of some specimens of Spiralix valenciana castellonica, used in this study as comparative material.Rebut el 25.02.19. Acceptat el 17.06.19.

Spiralix tuba (Gastropoda: Moitessieriidae) espècie nova d’Espanya

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Spiralix tuba (Gastropoda: Moitessieriidae) espècie nova d’Espanya

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