Kauaʻi record · KCA-OI-00053

Newcomb's Snail

Erinna newcombi

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Newcomb's Snail — Atlas scientific reconstruction based on the reviewed morphology reference; not a specimen photograph or population claim. · Kauaʻi Conservation Atlas · Kauaʻi Conservation Atlas community media · Image source

About Newcomb's Snail

A tiny Kauaʻi endemic freshwater snail with a smooth black, nearly limpet-like shell and strongly reduced spire. Federal reviews document dated spring-fed stream observations, while recent population condition remains unresolved.

Occurrence evidence

USFWS species account recognizes Newcomb's snail as a threatened Kauai endemic.

Names and classification

Scientific name: Erinna newcombi
Common names: Newcomb's Snail
Family: Lymnaeidae
Order: Hygrophila

Kauaʻi occurrence and status

Kauaʻi occurrence: Extant threatened endemic under current federal species account.
Origin: Endemic
Conservation status: Threatened (U.S. Fish and Wildlife Service species overview)
Evidence date: 2026-10-01
Evidence limits: Evidence is bounded to the source events and dates; current population size, island-wide distribution, and persistence at historical sites have not been established.

Habitat and ecology

Habitats: Freshwater and estuarine

Process and seasonal context

Seasonal description: A tiny Kauaʻi endemic freshwater snail with a smooth black, nearly limpet-like shell and strongly reduced spire. Federal reviews document dated spring-fed stream observations, while recent population condition remains unresolved.

Sources and further reading

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