Amastra cylindrica
Overview
A detailed profile for this species is sourced from the IUCN Red List of Threatened Species as assessments become available.
Amastra cylindrica faces severe threats from habitat destruction as native Hawaiian forests are cleared for development and agriculture. Invasive plant species alter the forest understory composition, reducing suitable microhabitats for this endemic snail. Predation by introduced species, particularly the rosy wolf snail (Euglandina rosea), has devastated native Hawaiian snail populations including this species. Climate change-induced shifts in rainfall patterns and temperature further stress remaining populations in their restricted montane forest habitat.
Habitat
Amastra cylindrica inhabits native montane forests in Hawaii, typically found in moist understory environments among leaf litter and on native vegetation. The species requires specific microclimate conditions with high humidity and stable temperatures found in intact native forest ecosystems.