achatinellids

Achathellids are a subfamily of land snails, belonging to the family Achatinellidae. These snails are primarily found in the Hawaiian Islands and are known for their diverse shell morphology. Many species exhibit striking color patterns and unique shell shapes, which have made them subjects of interest for both scientists and collectors. The subfamily is divided into several genera, with Achatinella being the most prominent.

Historically, achatinellids were abundant and played a significant role in the Hawaiian ecosystem. However, many species have experienced severe population declines and extinctions, largely due to habitat loss, introduced predators like rats and predatory snails, and overcollection. Conservation efforts are underway for some of the remaining species, focusing on habitat restoration and captive breeding programs. The study of achatinellids provides valuable insights into evolutionary processes, adaptation, and the impact of human activities on biodiversity. Their shells often display a sinistral or dextral coiling, and variations in size, texture, and aperture shape are common among different species and even within populations.