Politics of Spain "Cortes Generales" are dissolved, and new elections are called. The upper chamber is the Senate. It is nominally the chamber of territorial representation. Four senators are elected for each province, with the exception of the insular provinces, in which the number of senator varies: three senators are elected for each of the three major islands — Gran Canaria, Mallorca and Tenerife — and one senator for Ibiza-Formentera, Menorca, Fuerteventura, La Gomera, El Hierro, Lanzarote and La Palma. The autonomous cities of Ceuta and Melilla each elect two senators. In addition, the legislative assembly of each autonomous community designates one senator,
Gallotia 2010). Finally, the clade that colonized the younger western islands was likely to have originated from Lanzarote/Fuerteventura. This western island clade diverged into two groups, all of which colonized Tenerife, La Palma, La Gomera and El Hierro, leading to 1) a medium-bodied (e.g., "G. caesaris" from El Hierro) and 2) a large bodied "giant" species (e.g., "G. simonyi" from El Hierro) on each of these islands (note that "G. intermedia" from Tenerife belongs to the "giant" group, but present-day individuals are not that large). The giant species now exist, at best, in small relict populations, while "G. auritae" may be