Vicariant versus dispersal processes in the settlement of Pseudamnicola (Caenogastropoda, Hydrobiidae) in the Mediterranean Balearic Islands Author Delicado, Diana Author Machordom, Annie Author Ramos, Marian A. text Zoological Journal of the Linnean Society 2014 Zool. J. Linn. Soc. 2014-03-28 171 1 38 71 http://dx.doi.org/10.1111/zoj.12124 journal article 10.1111/zoj.12124 0024-4082 5305349 9CD3D06C-7D15-4211-9613-D23A67F07938 SUBGENUS PSEUDAMNICOLA ( PSEUDAMNICOLA ) PAULUCCI, 1878 Type species Bithynia lucensis Issel, 1866 ( Kennard & Woodward, 1926 ), subsequent designation. Diagnosis Shell ovate-conic, slightly longer than wide and an aperture wider than long; female genitalia with pyriform bursa copulatrix and one elongate seminal receptacle; penis broadly triangular with the base expanded and many folds along its entire surface; penis with a dark patch of pigment, whose extension varies amongst species, from its middle region to the tip; nervous system generally elongate ( RPG ratio from 0.50 to 0.67). Composition Six species in the Ibero-Balearic region: two in the Iberian Peninsula (one of which is also present on Ibiza Island), three on Majorca Island, and one on Minorca Island .