Mesticoleidae

Mesticoleidae is a family of marine gastropod mollusks belonging to the superfamily Rissooidea. These small snails are commonly found in marine environments, often inhabiting shallow coastal waters, intertidal zones, and even deeper offshore areas. The family was first described by W. Adam in 1941.

Members of Mesticoleidae are characterized by their generally small, dextral shells, which are often ovate or turreted. The shell sculpture can vary, but typically includes axial ribs and sometimes spiral cords. The aperture is usually ovate, and the operculum is corneous and paucispiral.

The diet of Mesticoleidae typically consists of algae and detritus, which they graze from hard substrates. Their reproductive biology is not extensively studied for all species, but it is generally assumed to involve internal fertilization and the release of egg masses or direct development.

The distribution of Mesticoleidae is widespread, with species found in various oceans around the globe. They play a role in the benthic ecosystems where they live, contributing to nutrient cycling and serving as a food source for other marine organisms. Further research is ongoing to fully understand the diversity and ecological significance of this family.