Species that are considered uncertain risk need a more in-depth assessment beyond the Risk Summary to better define the species’ risk to U.S. environments.
Cipangopaludina malleata is a species of mysterysnail described from various locations in Japan. Very little information is available on this species and there is much taxonomic uncertainty surrounding mysterysnails. Four States regulate the possession and trade of all species within the genus Cipangopaludina. Purported introductions of C. malleata into the United States are now considered to represent introductions of C. chinensis, and no other introductions have been documented globally. Therefore, the history of invasiveness is classified as No Known Nonnative Population. The climate match with the United States is high overall, with the highest matches occurring along the southeastern Atlantic coast. Much of the eastern United States has a high or medium match. The certainty of assessment is low due to the lack of information on impacts of introduction and taxonomic uncertainty. The overall risk assessment category for C. malleata is Uncertain.
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Uncertain Risk
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