Cochlostoma martorelli (Bourguignat, 1880)

Gofas, Serge, 2001, The systematics of Pyrenean and Cantabrian Cochlostoma (Gastropoda, Cyclophoroidea) revisited, Journal of Natural History 35 (9), pp. 1277-1369 : 1299-1303

Cochlostoma martorelli (Bourguignat, 1880)

(®gures 17±21)

Pomatias Martorelli Bourguignat in Servain,1880: 144. Type locality: rocks of Montserrat (province of Barcelona, Spain). Syntype (labelled`Barcelone’): coll. Bourguignat, MHNG .

Pomatias lapurdensis Fagot var. labrosa Westerlund, 1883: 63 ±64. Pomatias labrosus: Westerlund, 1885: 117 . Type locality: Montserrat. Syntypes: Naturhistoriska Riksmuseet, Stockholm.

Pomatias bolosianus SalvanÄa, 1888: 118 ±119 (44±45 in reprint). Type locality: Salt del Sallent , Santa Magdalena , PuigsacaÂu , Sierra del Corp y Finestras ( Olot ); Costabona ( Camprodon ), all province of Gerona , Spain. Possible syntypes: three shells labelled` Pich de Bassegoda, Olot’, reg. no. 81.9848, MZB, three shells reg. no. 159931/3 ( St Privat en Olot ), coll. Jetschin ex Fagot ex SalvanÄa, SMF , four shells reg. no. 3936/4 ( Puig de Basegorda ), coll. Haas ex Bo®ll, SMF .

Pomatias Esseranus Fagot, 1888: 197 (28±29 in reprint). Type locality: Des ®ladero de Campo on the Essera valley. Possible syntypes (none demonstrated) in MZB. Syntypes reg. no. 3932/2 (Des ®ladero de Campo), coll. Haas ex Bo ®ll ex Fagot, SMF .

Pomatias Montsicci Bo ®ll: Fagot , 1888: 198 (30 in reprint) (nomen nudum). Pomatias Montsiccianus Bo ®ll, 1890: 277±278. 1915: 16±18, pl. 6 ®gure 1. Type locality: Montsech , limestone near Montreveig (545 m); between the village of Puente de Montanyana and Portell del Montsech ; gorges further downstream ( Grauhet , Portellet , Portell ). Possible syntypes: 7 shells labelled` Montsech’, coll. Bourguignat, MHNG. Possible syntypes (none demonstrated) in MZB . Syntypes reg. no. 3939/12 ( Portell del Montsech ), coll. Haas ex Bo ®ll, SMF ; reg. no. 3942/5 ( Sot de Fet , Montsech), coll. Haas ex Bo ®ll, SMF ; reg. no. 159999/8 ( Pont de Montanyana ), coll. Jetschin ex Bo ®ll, SMF .

Pomatias noguerae Fagot, 1888: 198 (30 in reprint) (nomen nudum); Fagot 1891: 290±291 (132±133 in reprint). Type locality: valley of Noguera Pallaresa, between Rialp and Sort; between Talarn and Tremp; Des®ladero de Collegats. Syntype labelled by Haas:`Pomatias obscurus eseranus, cotyp. v. noguerae ’, reg. no. 80.0366, MZB.

Pomatias rudicosta Bo ®ll in Fagot, 1888: 198 (30 in reprint) (nomen nudum). Bo ®ll, 1890: 278±279. Type locality: Can Quinquilla de la Sierra ( Montsech de Aragon) at about 1200 m. Syntypes: four shells labelled by Haas `Montsech, Can Quinquilla de la Sierra 1200 m, dedit Bo ®ll’, reg. no. 81.9863, MZB. Possible syntypes: four shells labelled` Montsech’ in coll. Bourguignat., MHNG . Syntypes, reg. no. 160001/5, coll. Jetschin ex Bo ®ll, SMF ; reg. no. 3940/5 and 3941/3 (between Canellas and TragoÂ), coll. Haas ex Bo ®ll, SMF .

Pomatias Bo W lli Fagot, 1891: 290 (132 in reprint). Type locality:`limestone near Castellarde-Nudi [d’en Huc], at the sources of Llobregat’ÐSpurious syntypes labelled `Pomatias Bo W lli, coll. Bo ®llÐSan Llorens del Piteus’ reg. no. 80.0434, in coll. Bo ®ll, MZB. Syntypes reg. no. 3933/15 (sources of Llobregat), coll. Haas ex Bo®ll, SMF ; spurious syntypes reg. no. 159932 ( San Llorens del Piteus ), coll. Jetschin ex Bo®ll, SMF .

Pomatias Montserraticus Bourguignat in Fagot, 1891: 287±288 (129±130 in reprint). Type locality:`chaõÃne du Montserrat’ÐSyntypes in coll. Bourguignat, MHNG .

Pomatias Mouganicus Fagot, 1891: 288 (130 in reprint). Type locality:`meÂtairie de la Mouga’, at the border between PyreÂneÂes orientales and the province of Gerona. Syntypes in coll. Bourguignat, MHNG.

Pomatias ripacurcicus Bo ®ll in Fagot , 1891: 291 (133 in reprint). Type locality: Escalas de Sopeira , valley of Noguera Ribagorzana’. Possible syntype labelled `Pomatias ripacurcicus Bo ®llÐEscalas de Sopeira’, reg. no. 80 0376 in coll. Bo ®ll, MZB. Syntypes reg. no. 3934/6 ( Escalas de Sopeira ), coll. Haas ex Bo ®ll, SMF .

Pomatias alopioides Fagot, 1905: 140 ±141. Type locality:`de®le d’OrganyaÂ’. One syntype labelled by Haas `Pomatias obscurum eseranum, cotypus von P. alopioides, Congost d’OrganyaÂ, s, 2x’, reg. no. 80.0369, MZB. Syntypes reg. no. 3935/2 (Congost de Organya), coll. Haas ex Bo®ll ex Fagot, SMF.

Pomatias Organiacus Fagot, 1905: 141 (spelled Pomatias Organyacus : p.143). Type locality:`de®le d’OrganyaÂ’. Possible syntypes, none documented, in MZB . Syntypes reg. no. 3937/2 (Organya-Nargo), coll. Haas ex Bo ®ll ex Fagot, SMF ; Syntypes reg. no. 159930/7 (Organya), coll. Jetschin ex Fagot, SMF .

Pomatias sanctilaurentii Bo ®ll, 1917: 548 (nomen nudum). Locality: limestones of the Muschelkalk`en el Farell sobre Caldes de Montbuy’. One lot labelled `Pomatias sanctilaurentii, San Llorens del Mont, Bo®ll y FonseÂreÂ’, reg. no. 80.0074, MZB.

Description

Shell up to 16 Ö 6.2 mm with 8 to 9.5 quite rounded whorls. Early whorls with a peripheral angle which may be concealed by the suture or slightly apparent next to it; body whorl slightly constricted, usually with a slight peripheral angle in prolongation of the suture. Sculpture very weak, wrinkled, on the ®rst embryonic half whorl, then with broad, indistinct ribs on the next half-whorl grading to more de®nite and more crowded (20±25/mm) ribs on the second whorl. Spire whorls with quite strong and irregular ribs (7±10 ribs/mm) on third to ®fth whorls, then with ribs becoming gradually more crowded (up to 12 ribs/mm) on the penultimate and body whorl; ribs hardly or not at all thickened at their termination along the suture.

Aperture thickened and expanded into a collar, with a distinct rim inside the outer lip. Peristome distinctly auriculated, abruptly narrowing at the columellar insertion, moderately auriculated at the parietal insertion.

Shell colour with a brown to greyish brown background, over which some whitish segments of the ribs may give an ashy tone. Patterns composed by the whitish tone on the ribs, making a series of irregular subsutural blotches, one or two blurred bands at the periphery of whorls, and one peri-umbilical band. Peristome white.

Female genitalia as in general description, but with a rather small ovary occupying only one and one half whorl in the apical part of the spire. Male genitalia with a penis ¯attened on one side, of rather constant breadth except for the distal part which is tapering; otherwise like in general description.

Geographic range and variation

This species is found in the Spanish provinces of Barcelona, Gerona and Lerida, the easternmost occurrence being in the valley of the Esera at Campo, province of Huesca. One Pyrenean population (La Preste, PyreÂneÂes-Orientales) is in France. There are isolated populations in the Spanish provinces of Tarragona ( Vilella, 1958) and CastelloÂn.

There is a discrete geographic variation, both morphological and allozymic, among populations recognized as C. martorelli . Levels of polymorphism in any particular population are very low. Among the ten populations analysed, only one had three polymorphic loci, four others one single polymorphic locus, and in the other ®ve a single allele was ®xed in each of the 16 loci examined. Thus, structuration is high but the diOEerences are interpreted in terms of a single polytypic species rather because of the lack of consistent morphological diOEerences which would support taxonomic recognition of the diOEerences. A diOEerent course has been taken with the population in the valley of Rio Cinca where Gofas and Backeljau (1994) recognized C. gigas as a separate species both because allozymic diOEerences are more important and because they are corroborated by morphological criteria.

Several units can be recognized in the south Pyrenean area and may be given subspeci®c status: