Acusta tourannensis
Acusta tourannensis is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Camaenidae. Distribution. The distribution of this species includes: This species has not yet become established in the US, but it is considered to represent a potentially serious threat as a pest, an invasive species which could negatively affect agriculture, natural ecosystems, human health or commerce. Therefore, it has been suggested that this species be given top national quarantine significance in the USA.