Acavidae

Acavidae is a family of terrestrial pulmonate gastropods (land snails) belonging to the superfamily Acavoidea. These snails are primarily found in Madagascar and Southeast Asia, exhibiting significant diversity within their geographical range.

The defining characteristics of Acavidae snails include their often large size, thick shells, and operculum. The shells themselves can vary considerably in shape, color, and ornamentation depending on the specific genus and species. Many species exhibit vibrant coloration, serving as camouflage or potentially in intraspecific communication.

Historically, the classification of Acavidae has been debated, with some genera being moved between different families based on morphological and molecular data. Current phylogenetic analyses generally support the monophyly of the family as it is currently understood.

Acavidae snails occupy a variety of habitats, ranging from rainforests to drier woodland environments. They primarily feed on decaying vegetation and fungi. Due to habitat loss and over-collection, several species within the Acavidae family are considered threatened or endangered. Conservation efforts are ongoing in some regions to protect their remaining populations.