Zospeumpercostulatumsp. n. from Cueva de La Herrería (Llanes, Asturias) is described. It is characterized by a relatively large shell (1.4–1.8 mm height), conical, with ovate aperture, continuous peristome and thickened parietal callus; shell costulate except two first whorls; without any sort of inner formations. It is the first clearly costulate Iberian species, filling a morphological gap in the Iberian clade, and the largest species from the Cantabrian region, being the first species described from Asturias.
A high density population of Galba sp. was found in rice fields in the Ebro Delta in Spain. Two specimens were subject to molecular identification. Their COI and ITS-2 sequences formed one cluster with the GenBank sequences of the neotropical Galba cubensis (L. Pfeiffer), G. neotropica Bargues, Artigas, Mera y Sierra, Pointier et Mas-Coma and G. viatrix (d'Orbigny), being clearly distinct from G. truncatula (O. F. Müller) or G. schirazensis (Küster). Since the COI sequences of the two specimens from Spain were identical with the two GenBank sequences of G. cubensis from Colombia, we identified the two Spanish specimens as G. cubensis. There is, however, some degree of uncertainty given the need for a large-scale revision of the neotropical Galba. This is the first record of G. cubensis in European natural habitats. Until now, the European records of the species were based on morphologically determined specimens from greenhouses of botanical gardens or horticultural companies. Morpho-anatomical studies of the shells and genitalia do not allow for a reliable discrimination from the native species Galba truncatula thus pointing to DNA markers as the best tools for identification.
Lake Garda, the largest Italian lake, is suffering from the introduction of several non-indigenous species during the last decades and can now be considered one of the main European freshwater hotspots of xenodiversity. Among the Bivalvia (Veneroidea, Cyrenidae), Corbicula fluminea and Corbicula fluminalis were first recorded in 2002 and 2008 respectively, and are now widespread in the southern part of the basin. Recent observation of specimens that did not resemble either of these taxa, suggested that the populations of invasive Corbicula of Lake Garda could include some other taxa not previously recorded. With this aim, a thoroughly characterization of Corbicula shells found at Lake Garda was made. By studying morphometric parameters and comparing them with specimens collected in Spain (Ebro and Ter rivers), the presence in Lake Garda of two other related species not previously recorded in Italy, namely C. leana and C. largillierti, has been confirmed. The syntopic presence of at least four species of this genus in a single environment is a singular occurrence both in Italy and Europe.
Based on a survey of valvatiform hydrobiids inhabiting northwestern Spain, a new genus is described, Salaeniella n. gen. As monotype of the new genus a new valvatiform species is described, Salaeniella valdaligaensis n. sp. It inhabits Cantabria. Characters of a male of the new species are given.
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