Sígreni

Sígreni is a genus of small, terrestrial snails belonging to the family Geomitridae. These snails are primarily found in the Iberian Peninsula, with a particular concentration in Portugal and parts of Spain. They are characterized by their relatively small size, typically less than one centimeter in shell diameter, and often possess a globose or depressed-globose shell. The shell surface can vary, with some species exhibiting smooth textures while others have striations or even a more granular appearance.

The distribution of Sígreni species is often restricted to specific microhabitats, such as rocky slopes, woodlands, and areas with dense vegetation. Their diet generally consists of decaying plant matter, fungi, and algae, contributing to their role in the decomposition process within their ecosystems. Reproduction in Sígreni, like many pulmonate snails, is typically hermaphroditic, with individuals possessing both male and female reproductive organs.

Several species have been described within the Sígreni genus. Research into their taxonomy and evolutionary relationships is ongoing, with genetic studies playing an increasingly important role in clarifying species boundaries and their phylogenetic history. The conservation status of Sígreni species can vary, with some facing threats from habitat loss and degradation due to human activities, while others may be more widespread and less vulnerable.